JP2016072020A - Contact device - Google Patents

Contact device Download PDF

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JP2016072020A
JP2016072020A JP2014198928A JP2014198928A JP2016072020A JP 2016072020 A JP2016072020 A JP 2016072020A JP 2014198928 A JP2014198928 A JP 2014198928A JP 2014198928 A JP2014198928 A JP 2014198928A JP 2016072020 A JP2016072020 A JP 2016072020A
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contact
pair
piece
fixed
connecting pieces
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良介 尾崎
Ryosuke Ozaki
良介 尾崎
英樹 榎本
Hideki Enomoto
英樹 榎本
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a contact device capable of improving cut-off performance to high current while achieving downsizing.SOLUTION: A contact device 1 comprises a fixing member 4 provided with a fixed terminal 21 and a fixed contact 31, and a movable member 5 provided with a movable contact 32. The fixing member 4 comprises a terminal piece 41 provided with the fixed terminal 21, a contact piece 42 provided with the fixed contact 31, and a pair of coupling pieces 43 and 44 for coupling the terminal piece 41 and the contact piece 42 so as to electrically connect the fixed terminal 21 and the fixed contact 31. The pair of coupling pieces 43 and 44 are arranged at predetermined intervals in a second direction (longitudinal direction) orthogonal to a first direction (vertical direction). The movable contact 32 is arranged so that the position in the first direction comes between the terminal piece 41 and the contact piece 42 and the position in the second direction comes between the pair of coupling pieces 43 and 44.SELECTED DRAWING: Figure 1

Description

本発明は、一般に接点装置に関し、より詳細には固定接点および可動接点を備える接点装置に関する。   The present invention relates generally to contact devices, and more particularly to a contact device comprising a fixed contact and a movable contact.

従来、この種の接点装置として、固定接点の近傍に永久磁石が配置された接点装置(開閉装置)が提案されている(たとえば特許文献1参照)。   Conventionally, as this type of contact device, a contact device (switching device) in which a permanent magnet is arranged in the vicinity of a fixed contact has been proposed (see, for example, Patent Document 1).

特許文献1に記載の接点装置は、可動接点が固定接点から接触する際に生じたアーク(アーク電流)を、永久磁石の磁束で引き伸ばして遮断するように構成されている。この接点装置では、永久磁石は、固定接点を設けた固定部材(固定接点端子)における可動接点との対向面に組み付けられている。ここで、アークは、フレミングの左手の法則に基づいて磁場の向きと直交する方向に引き伸ばされるため、固定部材に沿って固定部材の短手方向に引き伸ばされることになる。   The contact device described in Patent Document 1 is configured to block an arc (arc current) generated when a movable contact comes into contact with a fixed contact by stretching with a magnetic flux of a permanent magnet. In this contact device, the permanent magnet is assembled on the surface facing the movable contact in the fixed member (fixed contact terminal) provided with the fixed contact. Here, since the arc is stretched in the direction perpendicular to the direction of the magnetic field based on Fleming's left-hand rule, the arc is stretched in the short direction of the fixed member along the fixed member.

特開2005−183285号公報JP 2005-183285 A

ところで、特許文献1に記載の構成では、アークと固定部材との干渉を避けるようにアークが固定部材の短手方向に引き伸ばされるため、可動接点に対して固定部材の短手方向の側方に、アークを引き伸ばすためのスペースが必要となる。とくに、大電流に対しての遮断性能を向上させるにはアークを引き伸ばすためのスペースを広く確保する必要があるため、特許文献1に記載の構成では、固定部材の短手方向における接点装置のサイズを小さく抑えることは困難である。   By the way, in the structure of patent document 1, since an arc is extended in the short direction of a fixed member so that interference with an arc and a fixed member may be avoided, it is to the side of the short direction of a fixed member with respect to a movable contact. A space is required to stretch the arc. In particular, in order to improve the breaking performance against a large current, it is necessary to secure a wide space for extending the arc. Therefore, in the configuration described in Patent Document 1, the size of the contact device in the short direction of the fixing member is required. Is difficult to keep small.

本発明は上記事由に鑑みて為されており、小型化を図りながらも、大電流に対しての遮断性能を向上させることができる接点装置を提供することを目的とする。   The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a contact device capable of improving the breaking performance against a large current while reducing the size.

本発明の接点装置の第1の形態は、固定端子および固定接点が設けられた固定部材と、可動接点が設けられ、前記固定接点に接触する閉位置と前記固定接点から離れる開位置との間で前記可動接点を第1方向に沿って移動させる可動部材とを備え、前記固定部材は、前記固定端子が設けられた端子片と、前記固定接点が設けられた接点片と、前記固定端子と前記固定接点とを電気的に接続するように前記端子片と前記接点片とを連結する一対の連結片とを有し、前記一対の連結片は、前記第1方向と直交する第2方向に所定の間隔を空けて並んでおり、前記可動接点は、前記第1方向の位置が前記端子片と前記接点片との間の範囲内で、且つ前記第2方向の位置が前記一対の連結片の間の範囲内となるように配置されていることを特徴とする。   According to a first aspect of the contact device of the present invention, there is provided a fixed member provided with a fixed terminal and a fixed contact, a movable contact provided between a closed position in contact with the fixed contact and an open position separated from the fixed contact. And a movable member that moves the movable contact along a first direction.The fixed member includes a terminal piece provided with the fixed terminal, a contact piece provided with the fixed contact, and the fixed terminal. A pair of connecting pieces for connecting the terminal piece and the contact piece so as to electrically connect the fixed contact; and the pair of connecting pieces are arranged in a second direction orthogonal to the first direction. The movable contacts are arranged at a predetermined interval, and the position of the first direction is within a range between the terminal piece and the contact piece, and the position of the second direction is the pair of connecting pieces. It is arranged to be within the range between

接点装置の第2の形態としては、第1の形態において、前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って同じ向きに突出しており、前記可動部材は、前記可動接点を起点として前記第3方向に沿って前記一対の連結片から離れる向きに延長された形状であって、前記固定端子は、前記第3方向において、前記固定接点よりも前記一対の連結片から離れた位置に配置されていることが望ましい。   As a second form of the contact device, in the first form, the terminal piece and the contact piece are connected to the first direction and the second direction from both ends of the pair of connecting pieces in the first direction. Projecting in the same direction along a third direction orthogonal to both, and the movable member extends in a direction away from the pair of connecting pieces along the third direction with the movable contact as a starting point. In the third direction, it is preferable that the fixed terminal is disposed at a position farther from the pair of connecting pieces than the fixed contact.

接点装置の第3の形態としては、第2の形態において、前記端子片は、前記一対の連結片の間を連結する第1小片と、前記固定端子が設けられた第2小片と、前記第3方向において所定の長さ寸法を持ち前記第1小片と前記第2小片とを連結する第3小片とを有することが望ましい。   As a third form of the contact device, in the second form, the terminal piece includes a first small piece for connecting the pair of connecting pieces, a second small piece provided with the fixed terminal, and the first piece. It is desirable to have a third small piece having a predetermined length dimension in three directions and connecting the first small piece and the second small piece.

接点装置の第4の形態としては、第1の形態において、前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って同じ向きに突出しており、前記可動部材は、前記可動接点を起点として前記一対の連結片の間を通して前記第3方向に沿って延長された形状であることが望ましい。   As a fourth form of the contact device, in the first form, the terminal piece and the contact piece are connected to the first direction and the second direction from both ends of the pair of connecting pieces in the first direction. The movable member protrudes in the same direction along a third direction orthogonal to both, and the movable member has a shape extended along the third direction through the gap between the pair of connecting pieces starting from the movable contact. It is desirable.

接点装置の第5の形態としては、第1の形態において、前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って互いに逆向きに突出しており、前記可動部材は、前記可動接点を起点として前記一対の連結片の間を通して前記第3方向に沿って延長された形状であることが望ましい。   As a fifth form of the contact device, in the first form, the terminal piece and the contact piece are arranged in the first direction and the second direction from both ends of the pair of connecting pieces in the first direction. Projecting in opposite directions along a third direction orthogonal to both, and the movable member has a shape extending along the third direction through the pair of connecting pieces starting from the movable contact. It is desirable to be.

接点装置の第6の形態としては、第1の形態において、前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って突出しており、前記可動部材は、前記可動接点を起点として前記一対の連結片の間を通して前記第3方向に沿って延長された形状であって、前記端子片は、前記一対の連結片の間を連結する第1小片と、前記固定端子が設けられた第2小片と、前記第1小片と前記第2小片とを連結する第3小片とを有し、前記第1小片は、前記一対の連結片に対し、前記第3方向において前記接点片と同じ側に位置し、前記第2小片は、前記一対の連結片に対し、前記第3方向において前記接点片と反対側に位置するように構成されていることが望ましい。   As a sixth form of the contact device, in the first form, the terminal piece and the contact piece are connected to the first direction and the second direction from both ends of the pair of connecting pieces in the first direction. Projecting along a third direction orthogonal to both, and the movable member has a shape extending along the third direction through the gap between the pair of connecting pieces starting from the movable contact, The terminal piece includes a first small piece for connecting the pair of connecting pieces, a second small piece provided with the fixed terminal, and a third small piece for connecting the first small piece and the second small piece. The first small piece is located on the same side as the contact piece in the third direction with respect to the pair of connection pieces, and the second small piece is in the third direction with respect to the pair of connection pieces. It is configured to be located on the opposite side of the contact piece Masui.

接点装置の第7の形態としては、第1〜6のいずれかの形態において、前記第2方向において前記可動接点を挟んで対向する一対の永久磁石を磁界発生源としてさらに備え、前記一対の永久磁石は、異極性の磁極面が互いに対向するように配置されていることが望ましい。   As a seventh aspect of the contact device, in any one of the first to sixth aspects, a pair of permanent magnets facing each other across the movable contact in the second direction is further provided as a magnetic field generation source. It is desirable that the magnets be arranged so that the magnetic pole surfaces of different polarities face each other.

接点装置の第8の形態としては、第1〜6のいずれかの形態において、前記第2方向において前記可動接点を挟んで対向する一対の永久磁石を磁界発生源としてさらに備え、前記一対の永久磁石は、同極性の磁極面が互いに対向するように配置されていることが望ましい。   As an eighth embodiment of the contact device, in any one of the first to sixth embodiments, the contact device further includes a pair of permanent magnets opposed to each other across the movable contact in the second direction, and the pair of permanent magnets. It is desirable that the magnets be arranged so that the magnetic pole surfaces having the same polarity face each other.

接点装置の第9の形態としては、第1〜6のいずれかの形態において、前記第2方向において前記可動接点を挟んで対向するように配置された第1永久磁石および第2永久磁石からなる一対の永久磁石と、前記第1方向および前記第2方向の両方に直交する第3方向において磁極面が前記可動接点と対向するように配置された第3永久磁石とを磁界発生源としてさらに備え、前記一対の永久磁石は、同極性の第1磁極面が互いに対向するように配置され、前記第3永久磁石は、前記第1磁極面とは異極性の第2磁極面が前記可動接点と対向するように配置されていることが望ましい。   As a ninth aspect of the contact device, in any one of the first to sixth aspects, the contact device includes a first permanent magnet and a second permanent magnet arranged to face each other with the movable contact in between in the second direction. The magnetic field generation source further includes a pair of permanent magnets and a third permanent magnet arranged so that a magnetic pole surface faces the movable contact in a third direction orthogonal to both the first direction and the second direction. The pair of permanent magnets are arranged so that the first magnetic pole surfaces having the same polarity face each other, and the third permanent magnet has a second magnetic pole surface having a polarity different from that of the first magnetic pole surface with the movable contact. It is desirable that they are arranged so as to face each other.

接点装置の第10の形態としては、第7〜9のいずれかの形態において、前記一対の永久磁石は、前記第2方向の位置が前記一対の連結片と重なるように配置されていることが望ましい。   As a tenth aspect of the contact device, in any one of the seventh to ninth aspects, the pair of permanent magnets may be arranged so that positions in the second direction overlap the pair of connecting pieces. desirable.

接点装置の第11の形態としては、第1〜6のいずれかの形態において、前記第1方向および前記第2方向の両方に直交する第3方向において磁極面が前記可動接点と対向するように配置された永久磁石を磁界発生源としてさらに備えることが望ましい。   As an eleventh aspect of the contact device, in any one of the first to sixth aspects, a magnetic pole surface is opposed to the movable contact in a third direction orthogonal to both the first direction and the second direction. It is desirable to further provide the arranged permanent magnet as a magnetic field generation source.

接点装置の第12の形態としては、第7〜11のいずれかの形態において、前記磁界発生源の生じる磁束を通す磁路の一部を形成するヨークをさらに備えることが望ましい。   As a twelfth aspect of the contact device, in any one of the seventh to eleventh aspects, it is desirable to further include a yoke that forms part of a magnetic path through which the magnetic flux generated by the magnetic field generation source passes.

接点装置の第13の形態としては、第7〜12のいずれかの形態において、非磁性材料からなり、少なくとも前記固定接点および前記可動接点を囲むケースをさらに備え、前記磁界発生源は前記ケースの外側に配置されていることが望ましい。   As a thirteenth embodiment of the contact device, in any one of the seventh to twelfth embodiments, the contact device further includes a case made of a nonmagnetic material and surrounding at least the fixed contact and the movable contact. It is desirable to arrange on the outside.

本発明は、一対の連結片の間に隙間があるため、この隙間を利用することで、第2方向にアークを引き伸ばさなくても、固定部材との干渉を避けつつアークを引き伸ばすことができる。したがって、接点装置は、装置全体のサイズを大きくすることなく、アークを引き伸ばすためのスペースを十分に確保することができ、その結果、小型化を図りながらも、大電流に対しての遮断性能を向上させることができる、という利点がある。   In the present invention, since there is a gap between the pair of connecting pieces, by using this gap, the arc can be extended while avoiding interference with the fixing member without extending the arc in the second direction. Therefore, the contact device can secure a sufficient space for extending the arc without increasing the size of the entire device. There is an advantage that it can be improved.

図1Aは実施形態1の接点装置の要部を示す斜視図、図1Bは実施形態1の接点装置の要部を示す平面図である。FIG. 1A is a perspective view illustrating a main part of the contact device according to the first embodiment, and FIG. 1B is a plan view illustrating a main part of the contact device according to the first embodiment. 実施形態1の接点装置を示す断面図である。It is sectional drawing which shows the contact apparatus of Embodiment 1. 実施形態1の接点装置の要部を示す正面図である。It is a front view which shows the principal part of the contact apparatus of Embodiment 1. 図4Aは実施形態1の接点装置の要部を示す斜視図、図4Bは実施形態1の接点装置の要部を示す平面図である。4A is a perspective view illustrating a main part of the contact device according to the first embodiment, and FIG. 4B is a plan view illustrating a main part of the contact device according to the first embodiment. 実施形態1の接点装置の要部を示す平面図である。It is a top view which shows the principal part of the contact apparatus of Embodiment 1. 図6Aは実施形態1の接点装置の要部を示す斜視図、図6Bは実施形態1の接点装置の要部を示す平面図である。FIG. 6A is a perspective view showing a main part of the contact device of the first embodiment, and FIG. 6B is a plan view showing the main part of the contact device of the first embodiment. 実施形態1の接点装置の要部を示す平面図である。It is a top view which shows the principal part of the contact apparatus of Embodiment 1. 図8Aは実施形態1の接点装置の要部を示す平面図、図8Bは実施形態1の接点装置の要部を示す平面図、図8Cは実施形態1の接点装置の要部を示す平面図、図8Dは実施形態1の接点装置の要部を示す平面図である。FIG. 8A is a plan view showing the main part of the contact device of the first embodiment, FIG. 8B is a plan view showing the main part of the contact device of the first embodiment, and FIG. 8C is a plan view showing the main part of the contact device of the first embodiment. FIG. 8D is a plan view showing a main part of the contact device of the first embodiment. 図9Aは実施形態1の接点装置の要部を示す平面図、図9Bは実施形態1の接点装置の要部を示す平面図、図9Cは実施形態1の接点装置の要部を示す平面図、図9Dは実施形態1の接点装置の要部を示す平面図である。9A is a plan view showing the main part of the contact device of Embodiment 1, FIG. 9B is a plan view showing the main part of the contact device of Embodiment 1, and FIG. 9C is a plan view showing the main part of the contact device of Embodiment 1. FIG. 9D is a plan view showing a main part of the contact device of the first embodiment. 変形例1の接点装置の要部を示す斜視図である。It is a perspective view which shows the principal part of the contact apparatus of the modification 1. 実施形態1の固定部材と変形例1の固定部材とを対比する平面図である。FIG. 6 is a plan view comparing the fixing member of Embodiment 1 and the fixing member of Modification Example 1; 図12Aは実施形態2の接点装置の要部を示す斜視図、図12Bは実施形態2の接点装置の要部を示す平面図である。FIG. 12A is a perspective view showing the main part of the contact device of the second embodiment, and FIG. 12B is a plan view showing the main part of the contact device of the second embodiment. 実施形態2の接点装置の要部を示す正面図である。It is a front view which shows the principal part of the contact apparatus of Embodiment 2. 変形例2の接点装置の要部を示す斜視図である。It is a perspective view which shows the principal part of the contact apparatus of the modification 2. 実施形態2の固定部材と変形例2の固定部材とを対比する平面図である。10 is a plan view comparing a fixing member of Embodiment 2 with a fixing member of Modification Example 2. FIG. 図16Aは実施形態3の接点装置の要部を示す斜視図、図16Bは実施形態3の接点装置の要部を示す平面図である。FIG. 16A is a perspective view showing the main part of the contact device of the third embodiment, and FIG. 16B is a plan view showing the main part of the contact device of the third embodiment.

(実施形態1)
本実施形態の接点装置1は、図1Aおよび図1Bに示すように、固定端子21および固定接点31が設けられた固定部材4と、可動接点32が設けられた可動部材5とを備えている。可動部材5は、固定接点31に接触する閉位置と固定接点31から離れる開位置との間で可動接点32を第1方向(上下方向)に沿って移動させる。
(Embodiment 1)
As shown in FIGS. 1A and 1B, the contact device 1 of the present embodiment includes a fixed member 4 provided with a fixed terminal 21 and a fixed contact 31, and a movable member 5 provided with a movable contact 32. . The movable member 5 moves the movable contact 32 along the first direction (vertical direction) between a closed position in contact with the fixed contact 31 and an open position away from the fixed contact 31.

固定部材4は、固定端子21が設けられた端子片41と、固定接点31が設けられた接点片42と、固定端子21と固定接点31とを電気的に接続するように端子片41と接点片42とを連結する一対の連結片43,44とを有している。一対の連結片43,44は、第1方向と直交する第2方向(前後方向)に所定の間隔を空けて並んでいる。   The fixed member 4 includes a terminal piece 41 provided with the fixed terminal 21, a contact piece 42 provided with the fixed contact 31, and the terminal piece 41 and the contact so as to electrically connect the fixed terminal 21 and the fixed contact 31. A pair of connecting pieces 43 and 44 for connecting the piece 42 are provided. The pair of connecting pieces 43 and 44 are arranged at a predetermined interval in a second direction (front-rear direction) orthogonal to the first direction.

可動接点32は、第1方向の位置が端子片41と接点片42との間の範囲内で、且つ第2方向の位置が一対の連結片43,44の間の範囲内となるように配置されている。   The movable contact 32 is arranged such that the position in the first direction is within the range between the terminal piece 41 and the contact piece 42 and the position in the second direction is within the range between the pair of connecting pieces 43 and 44. Has been.

この構成によれば、一対の連結片43,44間には隙間があるため、この隙間を利用することで、接点装置1は、固定部材4の短手方向(第2方向)にアークを引き伸ばさなくても、固定部材4との干渉を避けつつアークを引き伸ばすことができる。たとえば、接点装置1は、一対の連結片43,44の間を通してアークを引き伸ばすことにより、固定部材4との干渉を避けつつアークを引き伸ばすことが可能である。あるいは、可動部材5が一対の連結片43,44の間を貫通するように配置される場合、接点装置1は、一対の連結片43,44から離れる向きにアークを引き伸ばすことにより、固定部材4との干渉を避けつつアークを引き伸ばすことが可能である。したがって、接点装置1は、装置全体のサイズを大きくすることなく、アークを引き伸ばすためのスペースを十分に確保することができる。その結果、接点装置1は、小型化を図りながらも、大電流に対しての遮断性能を向上させることができる、という利点がある。   According to this configuration, since there is a gap between the pair of connecting pieces 43 and 44, the contact device 1 extends the arc in the short direction (second direction) of the fixing member 4 by using this gap. Even without this, the arc can be stretched while avoiding interference with the fixing member 4. For example, the contact device 1 can extend the arc while avoiding interference with the fixing member 4 by extending the arc through the pair of connecting pieces 43 and 44. Alternatively, when the movable member 5 is arranged so as to penetrate between the pair of connecting pieces 43 and 44, the contact device 1 extends the arc in a direction away from the pair of connecting pieces 43 and 44, thereby fixing the fixed member 4. It is possible to stretch the arc while avoiding the interference. Therefore, the contact device 1 can secure a sufficient space for extending the arc without increasing the size of the entire device. As a result, the contact device 1 has an advantage that it is possible to improve the breaking performance against a large current while reducing the size.

以下、本実施形態の接点装置1について詳しく説明する。以下に説明する接点装置1は、本発明の一例に過ぎず、本発明は、下記実施形態に限定されることはなく、この実施形態以外であっても、本発明に係る技術的思想を逸脱しない範囲であれば、設計等に応じて種々の変更が可能である。   Hereinafter, the contact device 1 of the present embodiment will be described in detail. The contact device 1 described below is only an example of the present invention, and the present invention is not limited to the following embodiment, and the technical idea according to the present invention is not deviated from this embodiment. Various changes can be made in accordance with the design or the like as long as they are not.

本実施形態では、接点装置1が、図2に示すように電磁石装置6と共に電磁継電器(電磁リレー)10を構成する場合を例として説明する。つまり、電磁継電器10は、接点装置1と、接点装置1を開閉するように駆動する電磁石装置6とを備えている。ただし、接点装置1は、電磁継電器10に限らず、たとえばブレーカ(遮断器)やスイッチ等に用いられていてもよい。本実施形態においては、電磁継電器10が電気自動車(EV)に搭載され、走行用のバッテリから負荷(たとえばインバータ)への直流電力の供給路上に接点装置1が電気的に接続される場合を例とする。   In the present embodiment, the case where the contact device 1 constitutes an electromagnetic relay (electromagnetic relay) 10 together with the electromagnet device 6 as shown in FIG. 2 will be described as an example. That is, the electromagnetic relay 10 includes the contact device 1 and the electromagnet device 6 that drives the contact device 1 to open and close. However, the contact device 1 is not limited to the electromagnetic relay 10 and may be used for, for example, a breaker (breaker) or a switch. In this embodiment, the electromagnetic relay 10 is mounted on an electric vehicle (EV), and the contact device 1 is electrically connected to a DC power supply path from a battery for traveling to a load (for example, an inverter). And

<接点装置の構成>
本実施形態の接点装置1は、図2に示すように、固定端子(以下、「第1固定端子」ともいう)21および固定接点31が設けられた固定部材4と、可動接点32が設けられた可動部材5とを備えている。ここでは、固定接点31は可動接点32と共に接点部3を構成している。さらに本実施形態では、接点装置1は、第1固定端子21と対を成す第2固定端子(以下、単に「固定端子」ともいう)22が設けられた支持部材11と、少なくとも接点部3を収納するケース12とを備えている。また、本実施形態の接点装置1は、固定接点31と可動接点32との間に発生するアークを引き伸ばすための磁界を発生する磁界発生源として2個(一対)、または1個あるいは3個の永久磁石を備えているが、図2では永久磁石の図示を省略する。
<Configuration of contact device>
As shown in FIG. 2, the contact device 1 of the present embodiment includes a fixed member 4 provided with a fixed terminal (hereinafter also referred to as “first fixed terminal”) 21 and a fixed contact 31, and a movable contact 32. The movable member 5 is provided. Here, the fixed contact 31 constitutes the contact part 3 together with the movable contact 32. Further, in the present embodiment, the contact device 1 includes at least the contact portion 3 and the support member 11 provided with the second fixed terminal 22 (hereinafter also simply referred to as “fixed terminal”) 22 that forms a pair with the first fixed terminal 21. And a case 12 for storage. Further, the contact device 1 of the present embodiment has two (a pair), or one or three magnetic field generation sources that generate a magnetic field for extending an arc generated between the fixed contact 31 and the movable contact 32. Although a permanent magnet is provided, the permanent magnet is not shown in FIG.

以下では、説明のために固定接点31と可動接点32との対向方向である第1方向(可動接点32の移動方向)を上下方向と定義し、固定接点31から見て可動接点32側を上方と定義する。さらに、一対の連結片43,44の並ぶ第2方向(第1方向と直交する方向)を前後方向と定義し、一対の連結片43,44のうち一方の連結片(第1連結片)43から見て他方の連結片(第2連結片)44側を後方と定義する。さらに、以下では第1方向および第2方向の両方に直交する第3方向を左右方向と定義する。なお、図面には、これらの方向(上、下、左、右、前、後)を表す矢印を示すが、これらの矢印は、単に説明を補助する目的で記載しているに過ぎず、実体を伴わない。つまり、以下では、図2の上下左右を上下左右とし、図2の紙面に直交する方向を前後方向として説明する。ただし、これらの方向は接点装置1の使用形態を限定する趣旨ではない。   In the following, for the sake of explanation, the first direction (moving direction of the movable contact 32), which is the facing direction of the fixed contact 31 and the movable contact 32, is defined as the vertical direction, and the movable contact 32 side is viewed upward from the fixed contact 31. It is defined as Furthermore, a second direction (a direction orthogonal to the first direction) in which the pair of connection pieces 43 and 44 are arranged is defined as a front-rear direction, and one of the pair of connection pieces 43 and 44 (first connection piece) 43. The other connecting piece (second connecting piece) 44 side when viewed from the side is defined as the rear. Furthermore, in the following, the third direction orthogonal to both the first direction and the second direction is defined as the left-right direction. In the drawings, arrows indicating these directions (up, down, left, right, front, rear) are shown, but these arrows are merely described for the purpose of assisting the explanation, Not accompanied. That is, in the following description, the upper, lower, left, and right in FIG. However, these directions are not intended to limit the usage pattern of the contact device 1.

ここで、固定端子21および固定接点31はそれぞれ固定部材4に設けられていればよく、固定部材4に一体に設けられていてもよいし、固定部材4とは別体として設けられていてもよい。同様に、可動接点32は可動部材5に設けられていればよく、可動部材5と一体に設けられていてもよいし、可動部材5とは別体として設けられていてもよい。すなわち、本実施形態においては、固定端子21は固定部材4とは別部材からなり固定部材4に固定されているが、この構成に限らず、固定端子21は固定部材4と一体に構成されていてもよい。第2固定端子22と支持部材11との関係についても同様である。また、固定接点31は固定部材4と一体に構成されている(固定部材4の一部である)が、この構成に限らず、固定接点31は固定部材4と別部材からなり固定部材4に固定されていてもよい。また、可動接点32は可動部材5とは別部材からなり可動部材5に固定されているが、この構成に限らず、可動接点32は可動部材5の一部が打ち出されるなどして可動部材5と一体に構成されていてもよい。   Here, the fixed terminal 21 and the fixed contact 31 are only required to be provided on the fixed member 4, may be provided integrally with the fixed member 4, or may be provided separately from the fixed member 4. Good. Similarly, the movable contact 32 may be provided on the movable member 5, may be provided integrally with the movable member 5, or may be provided separately from the movable member 5. That is, in the present embodiment, the fixed terminal 21 is a member different from the fixed member 4 and is fixed to the fixed member 4. However, the present invention is not limited to this configuration, and the fixed terminal 21 is configured integrally with the fixed member 4. May be. The same applies to the relationship between the second fixed terminal 22 and the support member 11. In addition, the fixed contact 31 is configured integrally with the fixed member 4 (which is a part of the fixed member 4). However, the fixed contact 31 is not limited to this configuration, and the fixed contact 31 includes a separate member from the fixed member 4. It may be fixed. The movable contact 32 is a member different from the movable member 5 and is fixed to the movable member 5. However, the movable contact 32 is not limited to this configuration, and the movable contact 32 is driven by a part of the movable member 5 being ejected. And may be configured integrally.

ケース12は、左右方向に長い中空の直方体状に形成され、接点部(固定接点31および可動接点32)3に加え、固定部材4、可動部材5、支持部材11、並びに永久磁石を収納している。ケース12は、上面が開口した箱状のボディ121と、矩形板状のカバー122とを備えている。カバー122は、ボディ121の上面を塞ぐようにボディ121に接合される。カバー122には、一対の固定端子21,22を通すための一対の開口孔が左右方向に並ぶように形成されている。一対の開口孔は、それぞれ円形状に形成されており、カバー122を厚み方向(上下方向)に貫通している。   The case 12 is formed in a hollow rectangular parallelepiped shape that is long in the left-right direction, and houses the fixed member 4, the movable member 5, the support member 11, and the permanent magnet in addition to the contact portion (fixed contact 31 and movable contact 32) 3. Yes. The case 12 includes a box-shaped body 121 whose upper surface is open, and a rectangular plate-shaped cover 122. The cover 122 is joined to the body 121 so as to close the upper surface of the body 121. The cover 122 is formed with a pair of opening holes for allowing the pair of fixed terminals 21 and 22 to pass in a line in the left-right direction. Each of the pair of opening holes is formed in a circular shape, and penetrates the cover 122 in the thickness direction (vertical direction).

本実施形態では一例として、ボディ121は、ステンレス(SUS304等)や42アロイ(Fe−42Ni)、コバールなどの金属製であり、カバー122はセラミックやガラスなどの絶縁性材料で形成されている。ただし、この例に限らず、たとえばカバー122は全体が絶縁性材料で形成されていなくてもよく、カバー122の一部のみが絶縁性材料で形成されていてもよい。また、ボディ121およびカバー122の両方が絶縁性材料で形成されていてもよい。また、詳しくは後述するが、磁界発生源(永久磁石)がケース12の外側に配置される場合には、ケース12のうち少なくとも磁界発生源に対応する部位(本実施形態ではボディ121)は、非磁性材料からなることが好ましい。   In this embodiment, as an example, the body 121 is made of a metal such as stainless steel (SUS304 or the like), 42 alloy (Fe-42Ni), or Kovar, and the cover 122 is formed of an insulating material such as ceramic or glass. However, the present invention is not limited to this example. For example, the cover 122 may not be entirely formed of an insulating material, and only a part of the cover 122 may be formed of an insulating material. Further, both the body 121 and the cover 122 may be formed of an insulating material. In addition, as will be described in detail later, when the magnetic field generation source (permanent magnet) is disposed outside the case 12, at least a portion of the case 12 corresponding to the magnetic field generation source (the body 121 in the present embodiment) It is preferably made of a nonmagnetic material.

一対の固定端子21,22(第1固定端子21および第2固定端子22)は、ケース12のカバー122に形成されている一対の開口孔を貫通した状態で、ケース12に保持される。これにより、一対の固定端子21,22は、左右方向に並ぶように配置される。一対の固定端子21,22は、各々、導電性の金属材料から形成されており、接点部3に外部回路(バッテリおよび負荷)を接続するための端子として機能する。本実施形態では、一例として銅(Cu)で形成された固定端子21,22を用いることとするが、固定端子21,22を銅製に限定する趣旨ではなく、固定端子21,22は銅以外の導電性材料で形成されていてもよい。   The pair of fixed terminals 21 and 22 (the first fixed terminal 21 and the second fixed terminal 22) are held by the case 12 while passing through a pair of opening holes formed in the cover 122 of the case 12. Accordingly, the pair of fixed terminals 21 and 22 are arranged so as to be aligned in the left-right direction. Each of the pair of fixed terminals 21 and 22 is made of a conductive metal material, and functions as a terminal for connecting an external circuit (battery and load) to the contact portion 3. In the present embodiment, the fixed terminals 21 and 22 formed of copper (Cu) are used as an example. However, the fixed terminals 21 and 22 are not limited to copper, and the fixed terminals 21 and 22 are other than copper. It may be formed of a conductive material.

一対の固定端子21,22の各々は、上下方向に直交する平面内での断面形状が円形状となる円柱状に形成されている。ここでは、一対の固定端子21,22の各々は、上端側を下端側の小径部に比べて外径の大きな拡径部とすることで、正面視がT字状となるように構成されている。第1固定端子21の下端部はケース12内で固定部材4に結合されており、第2固定端子22の下端部はケース12内で支持部材11に結合されている。   Each of the pair of fixed terminals 21 and 22 is formed in a columnar shape having a circular cross section in a plane orthogonal to the vertical direction. Here, each of the pair of fixed terminals 21 and 22 is configured to have a T-shaped front view by making the upper end side a larger diameter portion having a larger outer diameter than the lower diameter side smaller diameter portion. Yes. A lower end portion of the first fixed terminal 21 is coupled to the fixing member 4 in the case 12, and a lower end portion of the second fixed terminal 22 is coupled to the support member 11 in the case 12.

固定部材4は、導電性の金属板から形成されており、固定端子(第1固定端子)21と固定接点31とを電気的に接続する。つまり、固定部材4は、上述したように固定端子21が設けられた端子片41と、固定接点31が設けられた接点片42と、端子片41と接点片42とを連結する一対の連結片43,44(図1A参照)とを有している。本実施形態では、固定端子21は固定部材4と別体、固定接点31は固定部材4と一体に設けられているから、言い換えれば、端子片41の上面には固定端子21が取り付けられ、接点片42の一部が固定接点31となる。これにより、固定端子21は、固定部材4を介して固定接点31と電気的に接続されることになる。   The fixing member 4 is formed of a conductive metal plate, and electrically connects the fixed terminal (first fixed terminal) 21 and the fixed contact 31. That is, the fixing member 4 includes the terminal piece 41 provided with the fixed terminal 21 as described above, the contact piece 42 provided with the fixed contact 31, and a pair of connecting pieces that connect the terminal piece 41 and the contact piece 42. 43 (see FIG. 1A). In the present embodiment, the fixed terminal 21 is provided separately from the fixed member 4, and the fixed contact 31 is provided integrally with the fixed member 4. In other words, the fixed terminal 21 is attached to the upper surface of the terminal piece 41, and the contact A part of the piece 42 becomes the fixed contact 31. As a result, the fixed terminal 21 is electrically connected to the fixed contact 31 via the fixing member 4.

固定部材4の詳細については、後の「本実施形態の特徴」の項で説明する。   Details of the fixing member 4 will be described later in the section “Characteristics of the present embodiment”.

支持部材11は、導電性の金属板から形成されており、固定端子(第2固定端子)22と可動部材5とを電気的に接続する。ここでは、支持部材11は、左右方向に長い矩形板状に形成されており、長手方向の一端部(右端部)に固定端子22が設けられ、他端部(左端部)に可動部材5が設けられている。本実施形態では、固定端子22および可動部材5はいずれも支持部材11と別体として設けられているから、言い換えれば、支持部材11の右端部の上面には固定端子22が取り付けられ、支持部材11の左端部の下面には可動部材5が取り付けられている。これにより、固定端子22は、支持部材11を介して可動部材5と電気的に接続されることになる。   The support member 11 is formed of a conductive metal plate, and electrically connects the fixed terminal (second fixed terminal) 22 and the movable member 5. Here, the support member 11 is formed in a rectangular plate shape that is long in the left-right direction, the fixed terminal 22 is provided at one end (right end) in the longitudinal direction, and the movable member 5 is provided at the other end (left end). Is provided. In this embodiment, since the fixed terminal 22 and the movable member 5 are both provided separately from the support member 11, in other words, the fixed terminal 22 is attached to the upper surface of the right end portion of the support member 11. A movable member 5 is attached to the lower surface of the left end portion of 11. Thereby, the fixed terminal 22 is electrically connected to the movable member 5 via the support member 11.

可動部材5は、導電性の金属板から形成されており、支持部材11と可動接点32とを電気的に接続する。ここでは、可動部材5は、左右方向に長い帯状に形成されており、長手方向の一端部(左端部)が支持部材11によって支持(保持)され、他端部(右端部)に可動接点32が設けられている。本実施形態では、可動接点32は可動部材5と別体として設けられているから、言い換えれば、可動部材5の右端部の下面には可動接点32が取り付けられている。これにより、固定端子22は、支持部材11および可動部材5を介して可動接点32と電気的に接続されることになる。なお、可動部材5は、1枚の金属板で構成されていてもよいし、厚み方向に重ねた複数枚の金属板で構成されていてもよい。   The movable member 5 is formed of a conductive metal plate, and electrically connects the support member 11 and the movable contact 32. Here, the movable member 5 is formed in a strip shape that is long in the left-right direction, one end portion (left end portion) in the longitudinal direction is supported (held) by the support member 11, and the movable contact 32 is connected to the other end portion (right end portion). Is provided. In the present embodiment, the movable contact 32 is provided separately from the movable member 5. In other words, the movable contact 32 is attached to the lower surface of the right end portion of the movable member 5. As a result, the fixed terminal 22 is electrically connected to the movable contact 32 via the support member 11 and the movable member 5. In addition, the movable member 5 may be comprised with the metal plate of 1 sheet, and may be comprised with the several metal plate piled up in the thickness direction.

可動部材5は、右端部の下面に設けられている可動接点32を、固定部材4の接点片42の上面に設けられている固定接点31と対向させるように、固定部材4との位置関係が規定されている。言い換えれば、可動部材5は、その右端部に設けた可動接点32を固定接点31と対向させるような位置関係で、支持部材11によってケース12内に支持(保持)されている。ここで、可動部材5は、長手方向の一端部(左端部)が支持部材11に固定された片持ち梁であるから、自由端となる長手方向の他端部(右端部)を撓み量に応じて第1方向(上下方向)に移動させることができる。したがって、可動接点32は、可動部材5の移動(変形)に伴って上述したように第1方向に沿って移動し、固定接点31に接触する閉位置と固定接点31から離れた開位置との間を移動する。   The movable member 5 has a positional relationship with the fixed member 4 so that the movable contact 32 provided on the lower surface of the right end portion faces the fixed contact 31 provided on the upper surface of the contact piece 42 of the fixed member 4. It is prescribed. In other words, the movable member 5 is supported (held) in the case 12 by the support member 11 in such a positional relationship that the movable contact 32 provided at the right end thereof faces the fixed contact 31. Here, since the movable member 5 is a cantilever in which one end portion (left end portion) in the longitudinal direction is fixed to the support member 11, the other end portion (right end portion) in the longitudinal direction serving as a free end is bent. Accordingly, it can be moved in the first direction (vertical direction). Accordingly, the movable contact 32 moves along the first direction as described above with the movement (deformation) of the movable member 5, and the closed position that contacts the fixed contact 31 and the open position that is separated from the fixed contact 31. Move between.

また、可動部材5は、板ばねとしても機能し、定常時には可動接点32を固定接点31から離れた開位置に保持する。可動部材5は、後述する電磁石装置6からの駆動力が作用することにより、自身のばね力に抗して撓むことで可動接点32を固定接点31に接触する閉位置に移動させる。可動部材5は、電磁石装置6からの駆動力がなくなると、自身のばね力によって可動接点32を固定接点31から離れた開位置に復帰させる。   The movable member 5 also functions as a leaf spring, and holds the movable contact 32 in an open position away from the fixed contact 31 in a steady state. The movable member 5 is deflected against its own spring force by a driving force from an electromagnet device 6 to be described later, thereby moving the movable contact 32 to a closed position where it contacts the fixed contact 31. When the driving force from the electromagnet device 6 disappears, the movable member 5 returns the movable contact 32 to the open position away from the fixed contact 31 by its own spring force.

なお、本実施形態では一例として、固定部材4、可動部材5、および支持部材11はいずれも銅(Cu)製とするが、これらを銅製に限定する趣旨ではなく、銅以外の導電性材料で形成されていてもよい。   In this embodiment, as an example, the fixed member 4, the movable member 5, and the support member 11 are all made of copper (Cu), but these are not intended to be limited to copper, and are made of a conductive material other than copper. It may be formed.

上記構成により、接点装置1は、可動部材5の移動(変形)に伴って接点部(固定接点31および可動接点32)3が開閉する。ここで、固定接点31は固定部材4を介して固定端子21と電気的に接続され、可動接点32は支持部材11および可動部材5を介して固定端子22と電気的に接続されている。したがって、可動接点32が閉位置にあるとき、つまり接点部3が閉じた状態(以下、「閉状態」という)では、一対の固定端子21,22間は、固定部材4、接点部3、可動部材5、および支持部材11を介して導通する。そのため、接点装置1は、バッテリおよび負荷の一方に固定端子21を電気的に接続し、他方に固定端子22を電気的に接続することで、閉状態においてバッテリからの負荷への直流電力の供給路を形成する。一方、可動接点32が開位置にあるとき、つまり接点部3が開いた状態(以下、「開状態」という)では、一対の固定端子21,22間は非導通となる。このように、接点装置1は、接点部3の開閉に伴い一対の固定端子21,22間の導通と非導通とが切り替わることになる。   With the above configuration, in the contact device 1, the contact portion (the fixed contact 31 and the movable contact 32) 3 opens and closes as the movable member 5 moves (deforms). Here, the fixed contact 31 is electrically connected to the fixed terminal 21 via the fixed member 4, and the movable contact 32 is electrically connected to the fixed terminal 22 via the support member 11 and the movable member 5. Therefore, when the movable contact 32 is in the closed position, that is, in a state where the contact portion 3 is closed (hereinafter referred to as “closed state”), the fixed member 4, the contact portion 3, the movable member is disposed between the pair of fixed terminals 21 and 22. Conduction is made through the member 5 and the support member 11. For this reason, the contact device 1 electrically connects the fixed terminal 21 to one of the battery and the load and electrically connects the fixed terminal 22 to the other, thereby supplying DC power from the battery to the load in the closed state. Form a road. On the other hand, when the movable contact 32 is in the open position, that is, in a state where the contact portion 3 is open (hereinafter referred to as “open state”), the pair of fixed terminals 21 and 22 are not conductive. As described above, the contact device 1 is switched between conduction and non-conduction between the pair of fixed terminals 21 and 22 as the contact portion 3 is opened and closed.

ところで、本実施形態の接点装置1においては、ケース12の内部空間が気密空間となるように、一対の固定端子21,22はケース12のカバー122に気密接合されている。また、ケース12の内部空間にはたとえば水素を含む消弧性ガスが封入されていることが望ましい。これにより、ケース12内に収納されている接点部3が開極する際にアークが発生したとしても、アークは消弧性ガスによって急速に冷却され迅速に消弧可能になる。ただし、ケース12の内部空間が気密空間であることは必須の構成ではなく、ケース12内に消弧性ガスが封入されていることも必須の構成ではない。   By the way, in the contact device 1 of this embodiment, the pair of fixed terminals 21 and 22 are airtightly joined to the cover 122 of the case 12 so that the internal space of the case 12 becomes an airtight space. Further, it is desirable that an arc extinguishing gas containing hydrogen, for example, be sealed in the internal space of the case 12. Thereby, even if the arc is generated when the contact portion 3 accommodated in the case 12 is opened, the arc is rapidly cooled by the arc extinguishing gas and can be extinguished quickly. However, it is not an essential configuration that the internal space of the case 12 is an airtight space, and it is not an essential configuration that the arc extinguishing gas is sealed in the case 12.

なお、接点装置1は、本実施形態では固定接点31と可動接点32とを1つずつ備えた一点切りの構成であるが、この例に限らない。すなわち、接点装置は、たとえば一対の固定接点と、一対の固定接点に対向して配置された一対の可動接点とを備えた、二点切りの構成であってもよい。また、接点装置は、たとえば固定接点と可動接点との組を2組以上備えた多極の接点装置であってもよい。   In the present embodiment, the contact device 1 has a one-point cut configuration including one fixed contact 31 and one movable contact 32, but is not limited to this example. In other words, the contact device may have a two-point cut configuration including, for example, a pair of fixed contacts and a pair of movable contacts arranged to face the pair of fixed contacts. The contact device may be a multipolar contact device including two or more sets of fixed contacts and movable contacts, for example.

<電磁石装置の構成>
電磁石装置6は、図2に示すように、励磁コイル61と、コイルボビン62と、継鉄63と、一対の磁極板64,65と、アマチュア66と、保持ばね67とを備えている。電磁石装置6は、励磁コイル61への通電時に励磁コイル61で生じる磁束によって一対の磁極板64,65にアマチュア66を吸引し、アマチュア66を第1の位置(図2に示す位置)から第2の位置へ移動させる。さらに本実施形態では、電磁石装置6は、アマチュア66を接点装置1の可動部材5と機械的に連結して、電磁石装置6で発生した駆動力を接点装置1へ伝達するために、連結部材68および接圧ばね69を備えている。
<Configuration of electromagnet device>
As shown in FIG. 2, the electromagnet device 6 includes an exciting coil 61, a coil bobbin 62, a yoke 63, a pair of magnetic pole plates 64 and 65, an armature 66, and a holding spring 67. The electromagnet device 6 attracts the armature 66 to the pair of magnetic pole plates 64 and 65 by the magnetic flux generated in the exciting coil 61 when the exciting coil 61 is energized, and the armature 66 is moved from the first position (position shown in FIG. 2) to the second position. Move to the position. Further, in this embodiment, the electromagnet device 6 mechanically couples the armature 66 with the movable member 5 of the contact device 1, and transmits the driving force generated by the electromagnet device 6 to the contact device 1. And a contact pressure spring 69.

コイルボビン62は、電気絶縁性を有する絶縁材料、たとえば合成樹脂材料を用いて、左右方向に長い中空の円筒状に形成されている。励磁コイル61は、コイルボビン62の外周面に巻き付けられた電線によって構成されている。   The coil bobbin 62 is formed in a hollow cylindrical shape that is long in the left-right direction using an insulating material having electrical insulation properties, for example, a synthetic resin material. The exciting coil 61 is constituted by an electric wire wound around the outer peripheral surface of the coil bobbin 62.

継鉄63は、その中間部がコイルボビン62の中空部に挿し通されている。継鉄63のうち、コイルボビン62の左右方向の両端面から突出した部位はそれぞれ上方に延びており、継鉄63は全体として正面視が略C字状となるように構成されている。継鉄63の一端部は一対の磁極板64,65のうちの一方の磁極板(第1磁極板)64に結合され、継鉄63の他端部は一対の磁極板64,65のうちの他方の磁極板(第2磁極板)65に結合されている。   The intermediate portion of the yoke 63 is inserted through the hollow portion of the coil bobbin 62. The portions of the yoke 63 that protrude from the left and right end surfaces of the coil bobbin 62 extend upward, and the yoke 63 is configured to have a substantially C-shape when viewed from the front. One end of the yoke 63 is coupled to one of the pair of magnetic pole plates 64 and 65 (first magnetic pole plate) 64, and the other end of the yoke 63 is connected to the one of the pair of magnetic pole plates 64 and 65. The other magnetic pole plate (second magnetic pole plate) 65 is coupled.

一対の磁極板64,65は、それぞれ矩形板状に形成されており、ボディ121の底板に取り付けられている。これにより、電磁石装置6は、励磁コイル61とコイルボビン62と継鉄63と一対の磁極板64,65とが、ケース12に対して定位置(ケース12の下方)に固定されることになる。   The pair of magnetic pole plates 64 and 65 are each formed in a rectangular plate shape, and are attached to the bottom plate of the body 121. Accordingly, in the electromagnet device 6, the exciting coil 61, the coil bobbin 62, the yoke 63, and the pair of magnetic pole plates 64 and 65 are fixed to a fixed position (below the case 12) with respect to the case 12.

アマチュア66は、ケース12内に収納されている。アマチュア66は、左右方向に長い矩形板状に形成されており、長手方向の一端部(左端部)が第1磁極板64に対向し、他端部(右端部)が第2磁極板65に対向するような位置に配置されている。アマチュア66は、継鉄63および一対の磁極板64,65と共に、励磁コイル61の通電時に生じる磁束が通る磁路を形成する。そのため、継鉄63と一対の磁極板64,65とアマチュア66とは、いずれも磁性材料から形成されている。   The amateur 66 is stored in the case 12. The amateur 66 is formed in a rectangular plate shape that is long in the left-right direction. One end (left end) in the longitudinal direction faces the first magnetic pole plate 64 and the other end (right end) faces the second magnetic pole plate 65. It is arranged at a position facing each other. Together with the yoke 63 and the pair of magnetic pole plates 64, 65, the amateur 66 forms a magnetic path through which the magnetic flux generated when the exciting coil 61 is energized. Therefore, the yoke 63, the pair of magnetic pole plates 64 and 65, and the armature 66 are all made of a magnetic material.

保持ばね67は、正面視でL字状に形成された板ばねからなり、一端部がケース12に固定され、他端部がアマチュア66の左端部に固定されている。これにより、アマチュア66は、保持ばね67を介してケース12に支持され、第1磁極板64と対向する側の端部を支点にして回転可能になる。   The holding spring 67 is a leaf spring formed in an L shape in front view, and has one end fixed to the case 12 and the other end fixed to the left end of the armature 66. As a result, the armature 66 is supported by the case 12 via the holding spring 67 and can rotate with the end portion on the side facing the first magnetic pole plate 64 as a fulcrum.

励磁コイル61に通電されていない通常時には、アマチュア66は、右端部がボディ121の底板から離れた第1の位置(図2に示す位置)に、保持ばね67によって保持されている。対して、励磁コイル61に通電されると、アマチュア66は、一対の磁極板64,65に吸引され、保持ばね67を撓ませながら、右端部がボディ121の底板に接触する第2の位置に移動する。このように、電磁石装置6は、励磁コイル61の通電状態の切り替えによりアマチュア66に作用する吸引力を制御し、アマチュア66の右端部を上下方向に移動させることにより、接点装置1の接点部3の開状態と閉状態とを切り替えるための駆動力を発生する。   During normal times when the excitation coil 61 is not energized, the armature 66 is held by the holding spring 67 at a first position (position shown in FIG. 2) where the right end portion is separated from the bottom plate of the body 121. On the other hand, when the exciting coil 61 is energized, the armature 66 is attracted by the pair of magnetic pole plates 64 and 65 and is bent to the second position where the right end portion contacts the bottom plate of the body 121 while bending the holding spring 67. Moving. As described above, the electromagnet device 6 controls the attractive force acting on the armature 66 by switching the energization state of the exciting coil 61, and moves the right end portion of the armature 66 in the vertical direction, so that the contact portion 3 of the contact device 1 is moved. A driving force for switching between the open state and the closed state is generated.

連結部材68は、アマチュア66の右端部の上面に取り付けられている。接圧ばね69は、左右方向に長い板ばねであって、長手方向の一端部(左端部)が連結部材68に結合され、他端部(右端部)が可動部材5における可動接点32側の端部(右端部)に結合されている。ここでは、接圧ばね69は、左端部における前後方向の両端縁からそれぞれ下方に突出した一対の結合片を有しており、一対の結合片間に連結部材68を挟むような形で連結部材68に結合されている。可動部材5は、一対の結合片間を通すことで接圧ばね69の下方に配置されている。   The connecting member 68 is attached to the upper surface of the right end portion of the armature 66. The contact pressure spring 69 is a leaf spring that is long in the left-right direction. One end (left end) in the longitudinal direction is coupled to the connecting member 68 and the other end (right end) is on the movable contact 32 side of the movable member 5. It is connected to the end (right end). Here, the contact pressure spring 69 has a pair of coupling pieces protruding downward from both front and rear end edges at the left end portion, and the coupling member 68 is sandwiched between the pair of coupling pieces. 68. The movable member 5 is disposed below the contact pressure spring 69 by passing between the pair of coupling pieces.

これにより、アマチュア66の動き、すなわち電磁石装置6で発生する駆動力は、連結部材68および接圧ばね69を介して可動部材5へと伝達されることになる。   As a result, the movement of the armature 66, that is, the driving force generated in the electromagnet device 6 is transmitted to the movable member 5 via the connecting member 68 and the contact pressure spring 69.

<電磁継電器の動作>
次に、上述した構成の接点装置1および電磁石装置6を備えた電磁継電器10の動作について簡単に説明する。
<Operation of electromagnetic relay>
Next, operation | movement of the electromagnetic relay 10 provided with the contact apparatus 1 and the electromagnet apparatus 6 of the structure mentioned above is demonstrated easily.

励磁コイル61に通電されていないとき(非通電時)には、アマチュア66は、一対の磁極板64,65との間に磁気吸引力が生じないため、第1の位置に位置する。このとき、可動部材5には電磁石装置6からの駆動力は作用しないため、可動部材5は、図2に示すように可動接点32を固定接点31から離れた開位置に位置させる。この状態では、接点装置1は接点部3が開状態にあるので、一対の固定端子21,22間は非導通である。   When the exciting coil 61 is not energized (non-energized), the armature 66 is located at the first position because no magnetic attractive force is generated between the pair of magnetic pole plates 64 and 65. At this time, since the driving force from the electromagnet device 6 does not act on the movable member 5, the movable member 5 positions the movable contact 32 at an open position away from the fixed contact 31 as shown in FIG. 2. In this state, the contact device 1 is in a non-conductive state between the pair of fixed terminals 21 and 22 because the contact portion 3 is in the open state.

一方、励磁コイル61に通電されると、アマチュア66は、一対の磁極板64,65との間に磁気吸引力が生じるため、第2の位置に移動する。このとき、可動部材5には連結部材68および接圧ばね69を介して電磁石装置6からの駆動力が作用し、可動部材5における可動接点32側の端部(右端部)が下方へ移動する。これにより、可動部材5は、可動接点32を固定接点31に接触する閉位置へ移動させる。この状態では、接点装置1は接点部3が閉状態にあるので、一対の固定端子21,22間は導通する。   On the other hand, when the exciting coil 61 is energized, the armature 66 moves to the second position because a magnetic attractive force is generated between the pair of magnetic pole plates 64 and 65. At this time, the driving force from the electromagnet device 6 acts on the movable member 5 via the connecting member 68 and the contact pressure spring 69, and the end (right end) on the movable contact 32 side of the movable member 5 moves downward. . As a result, the movable member 5 moves the movable contact 32 to the closed position where it contacts the fixed contact 31. In this state, since the contact device 1 is in the closed state, the contact device 1 is electrically connected between the pair of fixed terminals 21 and 22.

なお、適切なオーバトラベルが設定されていれば、接点装置1は、アマチュア66と可動部材5との間に介在する接圧ばね69により、閉状態において固定接点31と可動接点32との間の接圧(接触圧)を確保できる。   If an appropriate overtravel is set, the contact device 1 is moved between the fixed contact 31 and the movable contact 32 in the closed state by the contact pressure spring 69 interposed between the armature 66 and the movable member 5. Contact pressure (contact pressure) can be secured.

<本実施形態の特徴>
次に、本実施形態の接点装置1における特徴について、図1Aおよび図1Bを参照して詳しく説明する。なお、図1Aおよび図1Bでは、接点装置1のうちの固定端子21、接点部3、固定部材4、および可動部材5を図示し、その他の図示を省略している(以降の図でも適宜省略する)。
<Features of this embodiment>
Next, features of the contact device 1 of the present embodiment will be described in detail with reference to FIGS. 1A and 1B. In FIG. 1A and FIG. 1B, the fixed terminal 21, the contact portion 3, the fixed member 4, and the movable member 5 of the contact device 1 are illustrated, and other illustrations are omitted (the following drawings are also omitted as appropriate). To do).

固定部材4は、上述したように、固定端子21が設けられた端子片41と、固定接点31が設けられた接点片42と、固定端子21と固定接点31とを電気的に接続するように端子片41と接点片42とを連結する一対の連結片43,44とを有している。ここで、一対の連結片43,44は、可動接点32の移動方向である第1方向(上下方向)と直交する第2方向(前後方向)に、所定の間隔を空けて並んでいる。   As described above, the fixing member 4 electrically connects the terminal piece 41 provided with the fixed terminal 21, the contact piece 42 provided with the fixed contact 31, and the fixed terminal 21 and the fixed contact 31. A pair of connecting pieces 43 and 44 for connecting the terminal piece 41 and the contact piece 42 are provided. Here, the pair of connecting pieces 43 and 44 are arranged at a predetermined interval in a second direction (front-rear direction) orthogonal to the first direction (up-down direction) that is the moving direction of the movable contact 32.

ここで、端子片41と接点片42とは、第1方向における一対の連結片43,44の両端部から、第1方向および第2方向の両方に直交する第3方向(左右方向)に沿って突出している。本実施形態では、端子片41は、一対の連結片43,44の上端部から左右両側に突出し、接点片42は、一対の連結片43,44の下端部から右側へ突出している。   Here, the terminal piece 41 and the contact piece 42 extend from both ends of the pair of connecting pieces 43 and 44 in the first direction along the third direction (left-right direction) orthogonal to both the first direction and the second direction. Protruding. In the present embodiment, the terminal piece 41 protrudes from the upper ends of the pair of connecting pieces 43 and 44 to the left and right sides, and the contact piece 42 protrudes from the lower ends of the pair of connecting pieces 43 and 44 to the right.

さらに、端子片41は、一対の連結片43,44の間を連結する第1小片411と、固定端子21が設けられた第2小片412と、第1小片411と第2小片412とを連結する第3小片413とを有している。第1小片411は、一対の連結片43,44に対し、第3方向において接点片42と同じ側に位置する。第2小片412は、一対の連結片43,44に対し、第3方向において接点片42と反対側に位置する。要するに、本実施形態では、第1小片411は一対の連結片43,44に対して右側に位置し、第2小片412は一対の連結片43,44に対して左側に位置する。   Further, the terminal piece 41 connects the first small piece 411 connecting the pair of connecting pieces 43 and 44, the second small piece 412 provided with the fixed terminal 21, and the first small piece 411 and the second small piece 412. And a third small piece 413. The first small piece 411 is located on the same side as the contact piece 42 in the third direction with respect to the pair of connecting pieces 43 and 44. The second small piece 412 is located on the opposite side of the contact piece 42 in the third direction with respect to the pair of connecting pieces 43 and 44. In short, in the present embodiment, the first small piece 411 is located on the right side with respect to the pair of connecting pieces 43 and 44, and the second small piece 412 is located on the left side with respect to the pair of connecting pieces 43 and 44.

端子片41と接点片42とは互いに略平行であって、それぞれ一対の連結片43,44とは略直交する。そのため、固定部材4は、端子片41と一対の連結片43,44とで正面視がT字状の形状を成し、接点片42と一対の連結片43,44とで正面視がL字状の形状を成す。固定端子21は第2小片412の上面に取り付けられている。固定接点31は、接点片42の上面のうち可動接点32と対向する部位である。   The terminal piece 41 and the contact piece 42 are substantially parallel to each other, and the pair of connecting pieces 43 and 44 are substantially orthogonal to each other. Therefore, the fixing member 4 has a T-shape when viewed from the front with the terminal piece 41 and the pair of connecting pieces 43 and 44, and an L-shape when viewed from the front with the contact piece 42 and the pair of connecting pieces 43 and 44. The shape of the shape. The fixed terminal 21 is attached to the upper surface of the second small piece 412. The fixed contact 31 is a part of the upper surface of the contact piece 42 that faces the movable contact 32.

また、可動接点32は、第1方向の位置が端子片41と接点片42との間の範囲内で、且つ第2方向の位置が一対の連結片43,44の間の範囲内となるように配置されている。言い換えれば、可動接点32は、第1方向に直交する平面であって端子片41を含む第1平面と、第1方向に直交する平面であって接点片42を含む第2平面との間に配置されている。さらに、可動接点32は、第2方向に直交する平面であって一対の連結片43,44のうちの一方の連結片(第1連結片)43を含む第3平面と、第2方向に直交する平面であって他方の連結片(第2連結片)44を含む第4平面との間に配置されている。   Further, the movable contact 32 has a position in the first direction within a range between the terminal piece 41 and the contact piece 42 and a position in the second direction within a range between the pair of connecting pieces 43 and 44. Is arranged. In other words, the movable contact 32 is between a first plane that is orthogonal to the first direction and includes the terminal piece 41, and a second plane that is orthogonal to the first direction and includes the contact piece 42. Has been placed. Furthermore, the movable contact 32 is a plane orthogonal to the second direction and includes a third plane including one connection piece (first connection piece) 43 of the pair of connection pieces 43 and 44, and orthogonal to the second direction. And a fourth plane including the other connecting piece (second connecting piece) 44.

さらに、可動部材5は、可動接点32を起点として一対の連結片43,44の間を通して第3方向に沿って延長された形状である。本実施形態では、可動部材5は、接点片42に設けた固定接点31と対向する可動接点32を起点として、一対の連結片43,44の間を通って左方に延長された形状である。言い換えれば、一対の連結片43,44の間を可動部材5が貫通するように固定部材4と可動部材5とが組み合わされている。そのため、一対の連結片43,44の間隔は、可動部材5の第2方向の寸法より大きく設定される。   Furthermore, the movable member 5 has a shape extending along the third direction from the movable contact point 32 through the pair of connecting pieces 43 and 44. In the present embodiment, the movable member 5 has a shape extending leftward through a pair of connecting pieces 43 and 44 starting from a movable contact 32 facing the fixed contact 31 provided on the contact piece 42. . In other words, the fixed member 4 and the movable member 5 are combined so that the movable member 5 penetrates between the pair of connecting pieces 43 and 44. Therefore, the distance between the pair of connecting pieces 43 and 44 is set larger than the dimension of the movable member 5 in the second direction.

ここで、図1Aおよび図1Bにおいては、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1が、接点部3から右方へ引き伸ばされた状態を一例として示している。図1Bでは、アークが引き伸ばされる向きを表す矢印を用いてアークを模式的に表している(図4B,図5,図6B,図8A,図8B,図8C,図8D,図9A,図9B,図9C,図9D,図12B,図16Bにおいても同様)。アークA1の引き伸ばされる向きは、磁界発生源としての1〜3個の永久磁石の配置や極性によって決まるが、この点については後述する。   Here, in FIG. 1A and FIG. 1B, the arc A1 generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is shown as an example in a state where the arc A1 is extended rightward from the contact portion 3. Yes. In FIG. 1B, the arc is schematically represented by using an arrow indicating the direction in which the arc is stretched (FIGS. 4B, 5, 6B, 8A, 8B, 8C, 8D, 9A, and 9B). The same applies to FIGS. 9C, 9D, 12B, and 16B). The direction in which the arc A1 is stretched is determined by the arrangement and polarity of 1 to 3 permanent magnets serving as magnetic field generation sources, which will be described later.

なお、本実施形態の接点装置1では、図1Bに示すように、可動部材5および可動接点32の右端部は、幅方向(前後方向)の中央部が右方に向けて凸となる先細り形状を採用している。これにより、接点部3から右方に引き伸ばされたアークA1は、先細り形状の先端に集中することになり、接点装置1は、アークA1の発生位置を制御しやすくなる。   In the contact device 1 of the present embodiment, as shown in FIG. 1B, the right end portions of the movable member 5 and the movable contact 32 are tapered so that the central portion in the width direction (front-rear direction) is convex toward the right. Is adopted. As a result, the arc A1 drawn rightward from the contact portion 3 is concentrated on the tapered tip, and the contact device 1 can easily control the position where the arc A1 is generated.

<効果>
以上説明した本実施形態の接点装置1は、固定端子21を設けた端子片41と、固定接点31を設けた接点片42との間が、第2方向に所定の間隔を空けて並ぶ一対の連結片43,44によって連結されている。さらに、可動接点32は、第1方向の位置が端子片41と接点片42との間の範囲内で、且つ第2方向の位置が一対の連結片43,44の間の範囲内となるように配置されている。そのため、接点装置1は、一対の連結片43,44間の空間を利用することで、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1を引き伸ばすためのスペースを、効率的に確保できる。
<Effect>
The contact device 1 of the present embodiment described above has a pair of terminals arranged in the second direction at a predetermined interval between the terminal piece 41 provided with the fixed terminal 21 and the contact piece 42 provided with the fixed contact 31. It is connected by connecting pieces 43 and 44. Further, the movable contact 32 has a position in the first direction within a range between the terminal piece 41 and the contact piece 42 and a position in the second direction within a range between the pair of connecting pieces 43 and 44. Is arranged. Therefore, the contact device 1 uses the space between the pair of connecting pieces 43 and 44 to provide a space for extending the arc A1 generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened. Can be secured efficiently.

すなわち、一対の連結片43,44間には隙間があるため、この隙間を利用することで、接点装置1は、固定部材4の短手方向(第2方向)にアークA1を引き伸ばさなくても、固定部材4との干渉を避けつつアークA1を引き伸ばすことができる。本実施形態のように可動部材5が一対の連結片43,44の間を貫通した構成では、接点装置1は、第3方向に沿って一対の連結片43,44から離れる向きにアークA1を引き伸ばすことで、固定部材4との干渉を避けてアークA1を引き伸ばすことができる。   That is, since there is a gap between the pair of connecting pieces 43 and 44, the contact device 1 does not have to stretch the arc A <b> 1 in the short direction (second direction) of the fixing member 4 by using this gap. The arc A1 can be stretched while avoiding interference with the fixing member 4. In the configuration in which the movable member 5 penetrates between the pair of connecting pieces 43 and 44 as in this embodiment, the contact device 1 causes the arc A1 to move away from the pair of connecting pieces 43 and 44 along the third direction. By stretching, the arc A1 can be stretched while avoiding interference with the fixing member 4.

要するに、本実施形態の構成によれば、接点部3から見て一対の連結片43,44と反対側、つまり接点部3の右方には、図1Aおよび図1Bに示すように、固定部材4が存在しない開けた空間が形成されることになる。言い換えれば、この構成の接点装置1は、アークA1を引き伸ばす先に電路が存在しないため、アークA1と電路との間の電気的な絶縁を考慮しなくとも、アークA1と電路との接触を回避できる。したがって、接点装置1は、図1Aおよび図1Bに例示するように、接点部3から右方にアークA1を引き伸ばすことによって、固定部材4との接触を避けつつアークA1を十分に引き伸ばすことが可能である。結果的に、接点装置1は、省スペースで比較的高い遮断性能を実現でき、小型化を図りながらも、大電流に対しての遮断性能を向上させることができる、という利点がある。   In short, according to the configuration of the present embodiment, as shown in FIGS. 1A and 1B, the fixing member is provided on the side opposite to the pair of connecting pieces 43 and 44 as viewed from the contact portion 3, that is, on the right side of the contact portion 3. An open space in which 4 does not exist is formed. In other words, the contact device 1 having this configuration avoids contact between the arc A1 and the electric circuit without considering the electrical insulation between the arc A1 and the electric circuit because the electric circuit does not exist at the point where the arc A1 is stretched. it can. Therefore, as illustrated in FIGS. 1A and 1B, the contact device 1 can sufficiently extend the arc A1 while avoiding contact with the fixing member 4 by extending the arc A1 to the right from the contact portion 3. It is. As a result, the contact device 1 has an advantage that it can realize a relatively high breaking performance in a space-saving manner, and can improve the breaking performance against a large current while reducing the size.

また、本実施形態の接点装置1の構成によれば、接点部3の閉状態において、固定部材4の端子片41を流れる電流と、可動部材5を流れる電流との間に斥力が作用する。すなわち、接点装置1は、図3に示すように、可動接点32が閉位置にある状態(接点部3の閉状態)において一対の固定端子21,22に電流が流れると、互いに対向し且つ略平行の関係にある端子片41と可動部材5とに逆向きの電流が流れる。つまり、端子片41を流れる電流I1と可動部材5を流れる電流I2とは互いに逆向きの関係になる。逆向きの平行電流(電流I1および電流I2)の間には斥力F1が働き、この斥力F1は、端子片41から可動部材5を引き離す向き、つまり可動部材5を下方に押し下げる向きに作用する。言い換えれば、可動接点32は斥力F1によって固定接点31に押し付けられることになる。   Further, according to the configuration of the contact device 1 of the present embodiment, a repulsive force acts between the current flowing through the terminal piece 41 of the fixed member 4 and the current flowing through the movable member 5 in the closed state of the contact portion 3. That is, as shown in FIG. 3, when a current flows through the pair of fixed terminals 21 and 22 in a state where the movable contact 32 is in the closed position (closed state of the contact portion 3), the contact device 1 faces each other and is substantially A reverse current flows through the terminal piece 41 and the movable member 5 in a parallel relationship. That is, the current I1 that flows through the terminal piece 41 and the current I2 that flows through the movable member 5 are in opposite directions. A repulsive force F1 acts between the parallel currents in the opposite directions (current I1 and current I2), and this repulsive force F1 acts in a direction in which the movable member 5 is pulled away from the terminal piece 41, that is, in a direction in which the movable member 5 is pushed downward. In other words, the movable contact 32 is pressed against the fixed contact 31 by the repulsive force F1.

したがって、接点装置1は、たとえば短絡電流などの大電流が接点部3を流れた際に、可動接点32を固定接点31から引き離す向きの力(電磁反発力)が生じたとしても、上記斥力F1により、可動接点32が固定接点31に接触した状態を維持しやすくなる。とくに、固定接点31と可動接点32とを1つずつ備えた一点切りの構成においては、電磁反発力の影響は大きくなるが、本実施形態の接点装置1は、斥力F1を利用することで接点部3の閉状態を維持しやすい。その結果、本実施形態の接点装置1は、短絡耐量(閉状態を維持できる短絡電流の上限値)が向上するという利点がある。   Therefore, even if a force (electromagnetic repulsive force) in the direction of separating the movable contact 32 from the fixed contact 31 is generated when a large current such as a short-circuit current flows through the contact portion 3, the contact device 1 has the repulsive force F <b> 1. Thus, it is easy to maintain the state in which the movable contact 32 is in contact with the fixed contact 31. In particular, in the one-point cut configuration including one fixed contact 31 and one movable contact 32, the influence of the electromagnetic repulsion force is increased, but the contact device 1 of the present embodiment uses the repulsive force F1 to make contact. It is easy to maintain the closed state of the part 3. As a result, the contact device 1 of the present embodiment has an advantage that the short-circuit tolerance (the upper limit value of the short-circuit current that can maintain the closed state) is improved.

なお、図3では、第1固定端子21から第2固定端子22に向かう電流を想定しているため、端子片41を流れる電流I1は右向き、可動部材5を流れる電流I2は左向きである。第2固定端子22から第1固定端子21に向かう電流を想定すると、端子片41を流れる電流I1は左向き、可動部材5を流れる電流I2は右向きとなる。   In FIG. 3, since a current from the first fixed terminal 21 toward the second fixed terminal 22 is assumed, the current I1 flowing through the terminal piece 41 is directed to the right, and the current I2 flowing through the movable member 5 is directed to the left. Assuming a current from the second fixed terminal 22 toward the first fixed terminal 21, the current I1 flowing through the terminal piece 41 is directed leftward, and the current I2 flowing through the movable member 5 is directed rightward.

また、本実施形態の構成において、第3小片413は、図1Bに示すように、第3方向(左右方向)において所定の長さ寸法を持つことが好ましい。これにより、接点装置1は、端子片41のうち可動部材5と対向する部位の第3方向の寸法を、第3小片413の分だけ長く確保でき、端子片41と可動部材5との間に生じる斥力F1が大きくなる。したがって、接点装置1は短絡耐量のさらなる向上を図ることができる。   In the configuration of the present embodiment, the third small piece 413 preferably has a predetermined length dimension in the third direction (left-right direction) as shown in FIG. 1B. Thereby, the contact device 1 can ensure the dimension of the 3rd direction of the site | part which opposes the movable member 5 among the terminal pieces 41 as much as the 3rd small piece 413, and between the terminal piece 41 and the movable member 5 is possible. The resultant repulsive force F1 increases. Therefore, the contact device 1 can further improve the short-circuit tolerance.

<磁界発生源>
次に、本実施形態の接点装置1における磁界発生源について説明する。
<Magnetic field source>
Next, the magnetic field generation source in the contact device 1 of the present embodiment will be described.

まず、磁界発生源を構成する永久磁石の配置や極性については、以下の4つの態様が考えられる。   First, regarding the arrangement and polarity of the permanent magnets constituting the magnetic field generation source, the following four modes can be considered.

第1態様においては、接点装置1は、図4Aおよび図4Bに示すように、第2方向(前後方向)において可動接点32を挟んで対向する2個(一対)の永久磁石71,72を磁界発生源として備えている。一対の永久磁石71,72は、異極性の磁極面が互いに対向するように配置されている。   In the first mode, as shown in FIGS. 4A and 4B, the contact device 1 uses two (a pair of) permanent magnets 71 and 72 facing each other with the movable contact 32 interposed therebetween in the second direction (front-rear direction). It is provided as a source. The pair of permanent magnets 71 and 72 are arranged such that magnetic pole surfaces of different polarities face each other.

さらに、第1態様においては、一対の永久磁石71,72は、第2方向の位置が一対の連結片43,44と重なるように配置されている。つまり、第1永久磁石71は第1連結片43の右方に配置され、第2永久磁石72は第2連結片44の右方に配置されている。   Furthermore, in the first aspect, the pair of permanent magnets 71 and 72 are arranged so that the positions in the second direction overlap the pair of connecting pieces 43 and 44. That is, the first permanent magnet 71 is disposed on the right side of the first connection piece 43, and the second permanent magnet 72 is disposed on the right side of the second connection piece 44.

一対の永久磁石71,72の各々は、対応する連結片43,44の幅寸法(前後方向の寸法)と略同じ厚み寸法を有する矩形板状に形成されている。一対の永久磁石71,72の各々は、第1方向(上下方向)の寸法が端子片41(の第1小片411)と接点片42との間隔以下に設定され、一対の連結片43,44と、端子片41の第1小片411と、接点片42とで囲まれた領域に収まるように配置される。図4Bの例では、一対の永久磁石71,72のうちの一方の永久磁石(第1永久磁石)71は接点部3側をS極とし、他方の永久磁石(第2永久磁石)72は接点部3側をN極としている。   Each of the pair of permanent magnets 71 and 72 is formed in a rectangular plate shape having a thickness dimension substantially the same as the width dimension (the dimension in the front-rear direction) of the corresponding coupling piece 43 and 44. Each of the pair of permanent magnets 71 and 72 has a dimension in the first direction (vertical direction) set to be equal to or less than the distance between the terminal piece 41 (first small piece 411 thereof) and the contact piece 42, and the pair of connecting pieces 43 and 44. And it arrange | positions so that it may fit in the area | region enclosed by the 1st small piece 411 of the terminal piece 41, and the contact piece 42. FIG. In the example of FIG. 4B, one permanent magnet (first permanent magnet) 71 of the pair of permanent magnets 71 and 72 has the contact portion 3 side as the S pole, and the other permanent magnet (second permanent magnet) 72 is the contact. The part 3 side is an N pole.

第1態様によれば、磁界発生源としての一対の永久磁石71,72が生じる磁束B1は、図4Bに示すように、接点部3の周囲において、第2方向に平行に生じることになる。したがって、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1は、ローレンツ力により第3方向(左右方向)へ引き伸ばされることになる。図4Bの例では、第2永久磁石72から第1永久磁石71に向かう磁束B1が生じている。そのため、第1固定端子21から第2固定端子22に向かう電流が流れている場合、アークA1は、固定接点31から可動接点32に向けて流れる電流であるから、右方に引き伸ばされることになる。なお、図4Bにおいて「I3」は一対の連結片43,44に流れる電流を表している(以降の図でも同様)。   According to the first aspect, the magnetic flux B1 generated by the pair of permanent magnets 71 and 72 as the magnetic field generation source is generated in parallel with the second direction around the contact portion 3 as shown in FIG. 4B. Therefore, the arc A1 generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is stretched in the third direction (left-right direction) by the Lorentz force. In the example of FIG. 4B, a magnetic flux B1 from the second permanent magnet 72 toward the first permanent magnet 71 is generated. Therefore, when a current flowing from the first fixed terminal 21 toward the second fixed terminal 22 is flowing, the arc A1 is a current flowing from the fixed contact 31 toward the movable contact 32, and is therefore stretched to the right. . In FIG. 4B, “I3” represents the current flowing through the pair of connecting pieces 43 and 44 (the same applies to the following drawings).

第2態様は、図5に示すように、磁界発生源としての一対の永久磁石73,74の配置(向き)が第1態様とは相違する。すなわち、第2態様においては、一対の永久磁石73,74は、同極性の磁極面が互いに対向するように配置されている。図5の例では、一対の永久磁石73,74のうちの一方の永久磁石(第1永久磁石)73は接点部3側をN極とし、他方の永久磁石(第2永久磁石)74も接点部3側をN極としている。また、第2態様においては、第3方向における一対の永久磁石73,74の中心線C2は、接点部3の中心線C1に対して、一対の連結片43,44側(左側)にオフセットしている。   As shown in FIG. 5, the second mode is different from the first mode in the arrangement (orientation) of a pair of permanent magnets 73 and 74 as a magnetic field generation source. That is, in the second mode, the pair of permanent magnets 73 and 74 are arranged so that the magnetic pole surfaces having the same polarity face each other. In the example of FIG. 5, one permanent magnet (first permanent magnet) 73 of the pair of permanent magnets 73 and 74 has an N pole on the contact portion 3 side, and the other permanent magnet (second permanent magnet) 74 is also a contact. The part 3 side is an N pole. In the second mode, the center line C2 of the pair of permanent magnets 73, 74 in the third direction is offset to the pair of connecting pieces 43, 44 side (left side) with respect to the center line C1 of the contact portion 3. ing.

第2態様によれば、一対の永久磁石73,74が生じる磁束B2は、図5に示すように、第2方向において接点部3に近づくに従って第3方向の外側(中心線C2から離れる向き)に逸れるように湾曲した曲線を描くことになる。したがって、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA2(またはA3)は、ローレンツ力により斜め右方へ引き伸ばされることになる。図5の例では、第1固定端子21から第2固定端子22に向かう電流が流れている場合のアークを「A2」で表し、第2固定端子22から第1固定端子21に向かう電流が流れている場合のアークを「A3」で表している。すなわち、第1固定端子21から第2固定端子22に向かう電流が流れている場合、アークA2は、固定接点31から可動接点32に向けて流れる電流であるから、右後方に引き伸ばされることになる。一方、第2固定端子22から第1固定端子21に向かう電流が流れている場合、アークA3は、可動接点32から固定接点31に向けて流れる電流であるから、右前方に引き伸ばされることになる。   According to the second mode, the magnetic flux B2 generated by the pair of permanent magnets 73 and 74 is outward in the third direction (direction away from the center line C2) as it approaches the contact portion 3 in the second direction, as shown in FIG. A curved curve is drawn so as to deviate. Therefore, the arc A2 (or A3) generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is stretched diagonally to the right by the Lorentz force. In the example of FIG. 5, an arc when current flowing from the first fixed terminal 21 to the second fixed terminal 22 flows is represented by “A2”, and current flowing from the second fixed terminal 22 to the first fixed terminal 21 flows. The arc in the case where it is present is represented by “A3”. That is, when a current flowing from the first fixed terminal 21 toward the second fixed terminal 22 is flowing, the arc A2 is a current flowing from the fixed contact 31 toward the movable contact 32, and is therefore stretched to the right rear. . On the other hand, when a current flowing from the second fixed terminal 22 toward the first fixed terminal 21 is flowing, the arc A3 is a current flowing from the movable contact 32 toward the fixed contact 31, and is therefore stretched right forward. .

第3態様においては、接点装置1は、図6Aおよび図6Bに示すように、第1方向および第2方向の両方に直交する第3方向において磁極面が可動接点32と対向するように配置された1個の永久磁石75を磁界発生源として備えている。ここで、永久磁石75は矩形板状に形成されている。図6Aおよび図6Bの例では、永久磁石75は、接点部3の右方に、接点部3とは所定の間隔を空けて配置されており、接点部3側をN極としている。   In the third aspect, the contact device 1 is arranged such that the magnetic pole surface faces the movable contact 32 in the third direction orthogonal to both the first direction and the second direction, as shown in FIGS. 6A and 6B. One permanent magnet 75 is provided as a magnetic field generation source. Here, the permanent magnet 75 is formed in a rectangular plate shape. In the example of FIGS. 6A and 6B, the permanent magnet 75 is arranged on the right side of the contact portion 3 with a predetermined distance from the contact portion 3, and the contact portion 3 side has an N pole.

第3態様によれば、永久磁石75が生じる磁束B3は、図6Bに示すように、接点部3を第3方向に沿って真っ直ぐに通過する直線、および第3方向において接点部3に近づくに従って第2方向の外側に逸れるように湾曲した曲線を描くことになる。したがって、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA4(またはA5)は、ローレンツ力により斜め右方へ引き伸ばされることになる。図6Bの例では、第1固定端子21から第2固定端子22に向かう電流が流れている場合のアークを「A4」で表し、第2固定端子22から第1固定端子21に向かう電流が流れている場合のアークを「A5」で表している。すなわち、第1固定端子21から第2固定端子22に向かう電流が流れている場合、アークA4は、固定接点31から可動接点32に向けて流れる電流であるから、右前方に引き伸ばされることになる。一方、第2固定端子22から第1固定端子21に向かう電流が流れている場合、アークA5は、可動接点32から固定接点31に向けて流れる電流であるから、右後方に引き伸ばされることになる。   According to the third aspect, as shown in FIG. 6B, the magnetic flux B3 generated by the permanent magnet 75 is a straight line that passes straight through the contact portion 3 along the third direction, and approaches the contact portion 3 in the third direction. A curved curve is drawn so as to deviate outward in the second direction. Therefore, the arc A4 (or A5) generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is stretched obliquely rightward by the Lorentz force. In the example of FIG. 6B, an arc when current flowing from the first fixed terminal 21 to the second fixed terminal 22 flows is represented by “A4”, and current flowing from the second fixed terminal 22 to the first fixed terminal 21 flows. The arc in the case where it is present is represented by “A5”. That is, when a current flowing from the first fixed terminal 21 to the second fixed terminal 22 flows, the arc A4 is a current that flows from the fixed contact 31 toward the movable contact 32, and is thus stretched right forward. . On the other hand, when a current flowing from the second fixed terminal 22 toward the first fixed terminal 21 is flowing, the arc A5 is a current flowing from the movable contact 32 toward the fixed contact 31, and therefore is stretched to the right rear. .

第4態様は、図7に示すように、一対の永久磁石73,74に加えて、第3方向において可動接点32と対向するように配置された永久磁石(第3永久磁石)76を磁界発生源として備える点で第2態様と相違する。つまり、第4態様においては、第1永久磁石73および第2永久磁石74からなる一対の永久磁石73,74と、第3永久磁石76との計3個の永久磁石73,74,76が磁界発生源として用いられている。ここで、永久磁石76は、第3態様の永久磁石75と同様に、矩形板状に形成され、接点部3の右方に、接点部3とは所定の間隔を空けて配置されている。永久磁石76は、一対の永久磁石73,74における接点部3側の磁極面とは異極性の磁極面を、接点部3側に向けるように配置されている。   In the fourth mode, as shown in FIG. 7, in addition to the pair of permanent magnets 73 and 74, a permanent magnet (third permanent magnet) 76 arranged to face the movable contact 32 in the third direction generates a magnetic field. It differs from the second mode in that it is provided as a source. That is, in the fourth mode, a total of three permanent magnets 73, 74, 76, which are a pair of permanent magnets 73, 74 including the first permanent magnet 73 and the second permanent magnet 74 and the third permanent magnet 76, are magnetic fields. It is used as a source. Here, like the permanent magnet 75 of the third aspect, the permanent magnet 76 is formed in a rectangular plate shape, and is disposed on the right side of the contact portion 3 with a predetermined interval from the contact portion 3. The permanent magnet 76 is disposed so that the magnetic pole surface having a different polarity from the magnetic pole surface on the contact portion 3 side in the pair of permanent magnets 73 and 74 faces the contact portion 3 side.

すなわち、第4態様では、一対の永久磁石73,74は、同極性の磁極面(第1磁極面)が互いに対向するように配置され、永久磁石76は、第1磁極面とは異極性の磁極面(第2磁極面)が第3方向において可動接点32と対向するように配置されている。図7の例では、一対の永久磁石73,74のうちの一方の永久磁石(第1永久磁石)73は接点部3側をN極(第1磁極面)とし、他方の永久磁石(第2永久磁石)74も接点部3側をN極(第1磁極面)としている。残りの永久磁石(第3永久磁石)76は接点部3側をS極(第2磁極面)としている。なお、第4態様においても、第2態様と同様に、第3方向における一対の永久磁石73,74の中心線C2は、接点部3の中心線C1に対して、一対の連結片43,44側(左側)にオフセットしている。   That is, in the fourth aspect, the pair of permanent magnets 73 and 74 are arranged such that the same polarity magnetic pole surfaces (first magnetic pole surfaces) face each other, and the permanent magnet 76 has a polarity different from that of the first magnetic pole surface. The magnetic pole surface (second magnetic pole surface) is disposed so as to face the movable contact 32 in the third direction. In the example of FIG. 7, one permanent magnet (first permanent magnet) 73 of the pair of permanent magnets 73 and 74 has an N pole (first magnetic pole surface) on the contact portion 3 side and the other permanent magnet (second permanent magnet). Permanent magnet) 74 also has an N pole (first magnetic pole surface) on the contact portion 3 side. The remaining permanent magnet (third permanent magnet) 76 has the contact portion 3 side as an S pole (second magnetic pole surface). In the fourth mode, similarly to the second mode, the center line C2 of the pair of permanent magnets 73, 74 in the third direction is a pair of connecting pieces 43, 44 with respect to the center line C1 of the contact portion 3. Offset to the side (left side).

第4態様によれば、一対の永久磁石73,74および永久磁石76が生じる磁束B4は、図7に示すように、一対の永久磁石73,74から第2方向において接点部3に近づくに従って第3方向の外側に逸れるように湾曲した曲線を描くことになる。図7の例では、一対の永久磁石73,74における接点部3側の磁極面(第1磁極面)がN極、永久磁石76における接点部3側の磁極面(第2磁極面)がS極であるから、磁束B4は、一対の永久磁石73,74から出て永久磁石76に向かうことになる。したがって、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA6(またはA7)は、ローレンツ力により斜め右方へ引き伸ばされることになる。図7の例では、第1固定端子21から第2固定端子22に向かう電流が流れている場合のアークを「A6」で表し、第2固定端子22から第1固定端子21に向かう電流が流れている場合のアークを「A7」で表している。すなわち、第1固定端子21から第2固定端子22に向かう電流が流れている場合、アークA6は、固定接点31から可動接点32に向けて流れる電流であるから、右後方に引き伸ばされることになる。一方、第2固定端子22から第1固定端子21に向かう電流が流れている場合、アークA7は、可動接点32から固定接点31に向けて流れる電流であるから、右前方に引き伸ばされることになる。   According to the fourth aspect, the magnetic flux B4 generated by the pair of permanent magnets 73 and 74 and the permanent magnet 76 is increased from the pair of permanent magnets 73 and 74 toward the contact portion 3 in the second direction as shown in FIG. A curved curve is drawn so as to deviate outward in the three directions. In the example of FIG. 7, the magnetic pole surface (first magnetic pole surface) on the contact portion 3 side of the pair of permanent magnets 73 and 74 is N-pole, and the magnetic pole surface (second magnetic pole surface) on the contact portion 3 side of the permanent magnet 76 is S. Since it is a pole, the magnetic flux B <b> 4 exits from the pair of permanent magnets 73 and 74 and travels toward the permanent magnet 76. Therefore, the arc A6 (or A7) generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is stretched obliquely rightward by the Lorentz force. In the example of FIG. 7, an arc when current flowing from the first fixed terminal 21 to the second fixed terminal 22 flows is represented by “A6”, and current flowing from the second fixed terminal 22 to the first fixed terminal 21 flows. The arc in the case where it is present is represented by “A7”. That is, when a current flowing from the first fixed terminal 21 to the second fixed terminal 22 is flowing, the arc A6 is a current flowing from the fixed contact 31 toward the movable contact 32, and is thus stretched to the right rear. . On the other hand, when a current flowing from the second fixed terminal 22 toward the first fixed terminal 21 is flowing, the arc A7 is a current flowing from the movable contact 32 toward the fixed contact 31, and therefore is stretched right forward. .

なお、上記第1形態〜第4形態では一例として、永久磁石の一方の磁極面(第4態様では第1磁極面)を「N極」、他方の磁極面(第4態様では第2磁極面)を「S極」として説明したが、この構成に限らず、N極とS極とは反対の関係であってもよい。ただし、N極とS極とが反対の関係にあると、第1態様においては、第2固定端子22から第1固定端子21に向かう電流が流れている場合に、アークA1が右方に引き伸ばされることになる。   In the first to fourth embodiments, as an example, one magnetic pole surface (first magnetic pole surface in the fourth embodiment) of the permanent magnet is “N pole”, and the other magnetic pole surface (second magnetic pole surface in the fourth embodiment). ) Is described as “S pole”, but the configuration is not limited to this, and the N pole and S pole may be in an opposite relationship. However, when the N pole and the S pole are in an opposite relationship, in the first mode, when a current is flowing from the second fixed terminal 22 to the first fixed terminal 21, the arc A1 is stretched to the right. Will be.

以上をまとめると、接点装置1は、第1態様のように、第2方向において可動接点32を挟んで対向する一対の永久磁石71,72を磁界発生源として備え、一対の永久磁石71,72は、異極性の磁極面が互いに対向するように配置されていることが好ましい。この構成によれば、接点装置1は、一対の永久磁石71,72で生じる磁束によってアークA1を引き伸ばすので、一対の永久磁石71,72の各々が小さくても、永久磁石が1個の場合に比べて強い磁場をアークA1に作用させることができる。したがって、接点装置1は比較的高い遮断性能を実現することができる。しかも、この構成では、接点装置1は、アークA1を第3方向に平行する向きに引き伸ばすことができる。   In summary, the contact device 1 includes a pair of permanent magnets 71 and 72 that are opposed to each other with the movable contact 32 interposed therebetween in the second direction as in the first mode, and the pair of permanent magnets 71 and 72. Are preferably arranged so that the magnetic pole faces of different polarities face each other. According to this configuration, the contact device 1 stretches the arc A1 by the magnetic flux generated by the pair of permanent magnets 71 and 72. Therefore, even when each of the pair of permanent magnets 71 and 72 is small, there is only one permanent magnet. A stronger magnetic field can be applied to the arc A1. Therefore, the contact device 1 can achieve a relatively high breaking performance. Moreover, in this configuration, the contact device 1 can extend the arc A1 in a direction parallel to the third direction.

あるいは、接点装置1は、第2態様のように、第2方向において可動接点32を挟んで対向する一対の永久磁石73,74を磁界発生源として備え、一対の永久磁石73,74は、同極性の磁極面が互いに対向するように配置されていてもよい。この構成によれば、接点装置1は、一対の固定端子21,22間を流れる電流の向きにかかわらず、第3方向に沿って一対の連結片43,44から離れる向きにアークA2,A3を引き伸ばすことができる。したがって、接点装置1は通電方向にかかわらず同等の遮断性能を実現可能である。   Alternatively, as in the second mode, the contact device 1 includes a pair of permanent magnets 73 and 74 facing each other with the movable contact 32 sandwiched in the second direction as a magnetic field generation source, and the pair of permanent magnets 73 and 74 are the same. The polar magnetic pole faces may be arranged so as to face each other. According to this configuration, the contact device 1 causes the arcs A2 and A3 to move away from the pair of connecting pieces 43 and 44 along the third direction regardless of the direction of the current flowing between the pair of fixed terminals 21 and 22. Can be stretched. Therefore, the contact device 1 can achieve the same breaking performance regardless of the energization direction.

また、接点装置1は、第4態様のように、第2方向において可動接点32を挟んで対向する一対の永久磁石73,74と、第3方向において磁極面が可動接点32と対向するように配置された永久磁石(第3永久磁石)76とを磁界発生源として備えていてもよい。一対の永久磁石73,74は第1永久磁石73および第2永久磁石74からなる。この場合、一対の永久磁石73,74は、同極性の第1磁極面が互いに対向するように配置され、永久磁石76は、第1磁極面とは異極性の第2磁極面が可動接点32と対向するように配置されることが好ましい。この構成によれば、接点装置1は、一対の固定端子21,22間を流れる電流の向きにかかわらず、第3方向に沿って一対の連結片43,44から離れる向きにアークA6,A7を引き伸ばすことができる。したがって、接点装置1は通電方向にかかわらず同等の遮断性能を実現可能である。しかも、接点装置1は、3個の永久磁石73,74,76を磁界発生源として用いることで、永久磁石73,74,76の各々の小型化を図ることができる。   Further, as in the fourth mode, the contact device 1 has a pair of permanent magnets 73 and 74 facing each other with the movable contact 32 sandwiched in the second direction, and the magnetic pole surface facing the movable contact 32 in the third direction. The arranged permanent magnet (third permanent magnet) 76 may be provided as a magnetic field generation source. The pair of permanent magnets 73 and 74 includes a first permanent magnet 73 and a second permanent magnet 74. In this case, the pair of permanent magnets 73 and 74 are arranged so that the first magnetic pole surfaces having the same polarity are opposed to each other, and the permanent magnet 76 has the second magnetic pole surface having a different polarity from the first magnetic pole surface. It is preferable to arrange so that it may oppose. According to this configuration, the contact device 1 causes the arcs A6 and A7 to move away from the pair of connecting pieces 43 and 44 along the third direction regardless of the direction of the current flowing between the pair of fixed terminals 21 and 22. Can be stretched. Therefore, the contact device 1 can achieve the same breaking performance regardless of the energization direction. Moreover, the contact device 1 can reduce the size of each of the permanent magnets 73, 74, and 76 by using the three permanent magnets 73, 74, and 76 as magnetic field generation sources.

さらに、第1態様あるいは第2態様、または第4態様において、一対の永久磁石71,72(あるいは73,74)は、第2方向の位置が一対の連結片43,44と重なるように配置されていることが好ましい。この構成によれば、一対の永久磁石71,72(あるいは73,74)は、一対の連結片43,44の外側に配置される場合に比べて、接点部3の近傍に配置されることになるため、強い磁場をアークに作用させることができる。したがって、接点装置1は比較的高い遮断性能を実現することができる。しかも、この構成では、一対の永久磁石71,72(あるいは73,74)は、一対の連結片43,44と、端子片41の第1小片411と、接点片42とで囲まれた領域に配置されるため、接点装置1は、空間の利用効率が高く小型化を図ることができる。   Furthermore, in the first aspect, the second aspect, or the fourth aspect, the pair of permanent magnets 71 and 72 (or 73 and 74) are arranged so that the positions in the second direction overlap the pair of connecting pieces 43 and 44. It is preferable. According to this configuration, the pair of permanent magnets 71 and 72 (or 73 and 74) is disposed near the contact portion 3 as compared with the case where the pair of permanent magnets 71 and 72 (or 73 and 74) is disposed outside the pair of coupling pieces 43 and 44. Therefore, a strong magnetic field can be applied to the arc. Therefore, the contact device 1 can achieve a relatively high breaking performance. In addition, in this configuration, the pair of permanent magnets 71 and 72 (or 73 and 74) is in an area surrounded by the pair of connecting pieces 43 and 44, the first small piece 411 of the terminal piece 41, and the contact piece 42. Therefore, the contact device 1 has high space utilization efficiency and can be downsized.

あるいは、接点装置1は、第3態様のように、第1方向および第2方向の両方に直交する第3方向において磁極面が可動接点32と対向するように配置された永久磁石75を磁界発生源として備えていてもよい。この構成によれば、接点装置1は、一対の固定端子21,22間を流れる電流の向きにかかわらず、第3方向に沿って一対の連結片43,44から離れる向きにアークA4,A5を引き伸ばすことができる。したがって、接点装置1は通電方向にかかわらず同等の遮断性能を実現可能である。しかも、磁界発生源としての永久磁石は1個でよいので、接点装置1は、部品点数を抑えることができる。   Alternatively, the contact device 1 generates a magnetic field from the permanent magnet 75 arranged so that the magnetic pole surface faces the movable contact 32 in the third direction orthogonal to both the first direction and the second direction, as in the third mode. It may be provided as a source. According to this configuration, the contact device 1 causes the arcs A4 and A5 to move away from the pair of connecting pieces 43 and 44 along the third direction regardless of the direction of the current flowing between the pair of fixed terminals 21 and 22. Can be stretched. Therefore, the contact device 1 can achieve the same breaking performance regardless of the energization direction. In addition, since the number of permanent magnets as a magnetic field generation source is one, the contact device 1 can suppress the number of parts.

ところで、接点装置1は、図8A、図8B、図8C、および図8Dに示すように、磁界発生源の生じる磁束を通す磁路の一部を形成するヨーク13をさらに備えていてもよい。ヨーク13は磁性材料からなる。ここでは、ヨーク13は、第2方向に対向する一対の側板131,132と、一対の側板131,132の間を連結する連結板133とを有し、全体として略C字状に形成されている。ヨーク13は、接点部(固定接点31および可動接点32)3を囲むように配置されている。図8A、図8B、図8C、および図8Dに示す例では、ヨーク13は、いずれも磁界発生源を囲むように配置されている。言い換えれば、磁界発生源はヨーク13の内側に配置されている。   Incidentally, as shown in FIGS. 8A, 8B, 8C, and 8D, the contact device 1 may further include a yoke 13 that forms a part of a magnetic path through which a magnetic flux generated by a magnetic field generation source passes. The yoke 13 is made of a magnetic material. Here, the yoke 13 has a pair of side plates 131 and 132 facing each other in the second direction and a connecting plate 133 that connects the pair of side plates 131 and 132, and is formed in a substantially C shape as a whole. Yes. The yoke 13 is disposed so as to surround the contact portion (the fixed contact 31 and the movable contact 32) 3. In the example shown in FIGS. 8A, 8B, 8C, and 8D, the yoke 13 is disposed so as to surround the magnetic field generation source. In other words, the magnetic field generation source is disposed inside the yoke 13.

第1態様にヨーク13を追加した図8Aの例では、第1永久磁石71は、一対の側板131,132のうちの一方の側板(第1側板)131に取り付けられ、第2永久磁石72は、他方の側板(第2側板)132に取り付けられている。第2態様にヨーク13を追加した図8Bの例でも同様に、第1永久磁石73は、第1側板131に取り付けられ、第2永久磁石74は、第2側板132に取り付けられている。第3態様にヨーク13を追加した図8Cの例では、永久磁石75は連結板133に取り付けられている。第4態様にヨーク13を追加した図8Dの例では、第1永久磁石73は、第1側板131に取り付けられ、第2永久磁石74は、第2側板132に取り付けられ、第3永久磁石76は連結板133に取り付けられている。   In the example of FIG. 8A in which the yoke 13 is added to the first mode, the first permanent magnet 71 is attached to one side plate (first side plate) 131 of the pair of side plates 131 and 132, and the second permanent magnet 72 is The other side plate (second side plate) 132 is attached. Similarly, in the example of FIG. 8B in which the yoke 13 is added to the second mode, the first permanent magnet 73 is attached to the first side plate 131, and the second permanent magnet 74 is attached to the second side plate 132. In the example of FIG. 8C in which the yoke 13 is added to the third mode, the permanent magnet 75 is attached to the connecting plate 133. In the example of FIG. 8D in which the yoke 13 is added to the fourth mode, the first permanent magnet 73 is attached to the first side plate 131, the second permanent magnet 74 is attached to the second side plate 132, and the third permanent magnet 76. Is attached to the connecting plate 133.

接点装置1は、このようなヨーク13を備えることで、ヨーク13が無い場合に比べて、同一の永久磁石でも強い磁場をアークに作用させることができ、より高い遮断性能を実現することができる。   By providing such a yoke 13, the contact device 1 can cause a strong magnetic field to act on the arc even with the same permanent magnet as compared with the case without the yoke 13, and can realize higher interruption performance. .

また、少なくとも接点部(固定接点31および可動接点32)3を囲むケース12が非磁性材料からなる場合、図9A、図9B、図9C、および図9Dに示すように、磁界発生源はケース12の外側に配置されていてもよい。図9A、図9B、図9C、および図9Dに示す例では、いずれもケース12の外側にヨーク13が設けられているが、ヨーク13は必須の構成ではない。   When the case 12 surrounding at least the contact portion (the fixed contact 31 and the movable contact 32) 3 is made of a nonmagnetic material, the magnetic field generation source is the case 12, as shown in FIGS. 9A, 9B, 9C, and 9D. It may be arranged on the outside. In the examples shown in FIGS. 9A, 9B, 9C, and 9D, the yoke 13 is provided outside the case 12, but the yoke 13 is not an essential configuration.

第1態様から派生した図9Aの例では、第1永久磁石71は、ケース12の前面に取り付けられ、第2永久磁石72は、ケース12の後面に取り付けられている。第2態様から派生した図9Bの例でも同様に、第1永久磁石73は、ケース12の前面に取り付けられ、第2永久磁石74は、ケース12の後面に取り付けられている。第3態様から派生した図9Cの例では、永久磁石75はケース12の右側面に取り付けられている。第4態様から派生した図9Dの例では、第1永久磁石73はケース12の前面に取り付けられ、第2永久磁石74はケース12の後面に取り付けられ、第3永久磁石76はケース12の右側面に取り付けられている。   In the example of FIG. 9A derived from the first mode, the first permanent magnet 71 is attached to the front surface of the case 12, and the second permanent magnet 72 is attached to the rear surface of the case 12. Similarly in the example of FIG. 9B derived from the second mode, the first permanent magnet 73 is attached to the front surface of the case 12, and the second permanent magnet 74 is attached to the rear surface of the case 12. In the example of FIG. 9C derived from the third mode, the permanent magnet 75 is attached to the right side surface of the case 12. In the example of FIG. 9D derived from the fourth mode, the first permanent magnet 73 is attached to the front surface of the case 12, the second permanent magnet 74 is attached to the rear surface of the case 12, and the third permanent magnet 76 is the right side of the case 12. It is attached to the surface.

接点装置1は、このように磁界発生源がケース12の外側に配置されることにより、ケース12が壁となってアークの熱による磁界発生源へのダメージを低減でき、磁束密度が低減しにくくなる。   In the contact device 1, the magnetic field generation source is arranged outside the case 12 as described above, so that the case 12 becomes a wall and damage to the magnetic field generation source due to the heat of the arc can be reduced, and the magnetic flux density is hardly reduced. Become.

なお、本実施形態の接点装置1において、永久磁石などの磁界発生源は必須の構成ではなく、たとえば固定部材4を流れる電流に起因した誘導磁場や、消弧グリッドのような消弧装置を利用して消弧する構成であってもよい。   In the contact device 1 of the present embodiment, a magnetic field generation source such as a permanent magnet is not an essential configuration, and for example, an induction magnetic field caused by a current flowing through the fixed member 4 or an arc extinguishing device such as an arc extinguishing grid is used. The arc may be extinguished.

<変形例1>
次に、本実施形態の変形例となる接点装置1について、図10を参照して説明する。
<Modification 1>
Next, a contact device 1 as a modification of the present embodiment will be described with reference to FIG.

変形例の接点装置1は、固定部材4の形状が本実施形態の接点装置1と相違する。具体的には、変形例では、端子片41と接点片42とは、第1方向(上下方向)における一対の連結片43,44の両端部から、第1方向および第2方向(前後方向)の両方に直交する第3方向(左右方向)に沿って互いに逆向きに突出している。本変形例では、端子片41は、一対の連結片43,44の上端部から左側に突出し、接点片42は、一対の連結片43,44の下端部から右側へ突出している。そのため、固定部材4は、端子片41と一対の連結片43,44とで正面視がL字状の形状を成し、接点片42と一対の連結片43,44とで正面視がL字状の形状を成す。   The contact device 1 of the modification is different from the contact device 1 of the present embodiment in the shape of the fixing member 4. Specifically, in the modification, the terminal piece 41 and the contact piece 42 are arranged in the first direction and the second direction (front-rear direction) from both ends of the pair of connecting pieces 43, 44 in the first direction (up-down direction). And project in opposite directions along a third direction (left-right direction) orthogonal to both. In this modification, the terminal piece 41 protrudes to the left from the upper ends of the pair of connecting pieces 43 and 44, and the contact piece 42 protrudes to the right from the lower ends of the pair of connecting pieces 43 and 44. Therefore, the fixing member 4 has an L-shape when viewed from the front with the terminal piece 41 and the pair of connecting pieces 43 and 44, and an L-shape when viewed from the front with the contact piece 42 and the pair of connecting pieces 43 and 44. The shape of the shape.

なお、変形例においても、可動部材5は、本実施形態の接点装置1と同様に、可動接点32を起点として一対の連結片43,44の間を通して第3方向に沿って延長された形状である。   Also in the modified example, the movable member 5 has a shape extending along the third direction through the pair of connecting pieces 43 and 44 starting from the movable contact 32, similarly to the contact device 1 of the present embodiment. is there.

本変形例の接点装置1は、本実施形態の接点装置1と同様に、小型化を図りながらも、大電流に対しての遮断性能を向上させることができ、また、短絡耐量(閉状態を維持できる短絡電流の上限値)が向上するという利点がある。   Similar to the contact device 1 of the present embodiment, the contact device 1 of the present modification can improve the breaking performance against a large current while reducing the size, and also can withstand short-circuit resistance (closed state). There is an advantage that the upper limit of the short-circuit current that can be maintained is improved.

ところで、固定部材4は、図11に示すような1枚の金属板から形成されており、金属板に曲げ加工が施されることにより、上述したように端子片41、接点片42、および一対の連結片43,44を有する立体的な形状に加工される。図11は、本実施形態の接点装置1の固定部材4を展開した金属板を「81」で示し、変形例の接点装置1の固定部材4を展開した金属板を「82」で示している。   By the way, the fixing member 4 is formed of a single metal plate as shown in FIG. 11, and by bending the metal plate, as described above, the terminal piece 41, the contact piece 42, and the pair It is processed into a three-dimensional shape having the connecting pieces 43 and 44. FIG. 11 shows a metal plate on which the fixing member 4 of the contact device 1 of the present embodiment is developed by “81”, and a metal plate on which the fixing member 4 of the modified contact device 1 is developed by “82”. .

金属板81は、一方向(図11の上下方向)に長い矩形枠状のフレーム811と、フレーム811の長手方向に対応する一対の辺のうち一方の辺から内側に突出する舌片812とを有している。一方、金属板82は、一方向(図11の上下方向)に長い矩形枠状のフレーム821と、フレーム821の長手方向に対応する一対の辺のうち一方の辺からフレーム821の外側に突出する舌片822とを有している。   The metal plate 81 includes a rectangular frame-shaped frame 811 that is long in one direction (vertical direction in FIG. 11) and a tongue piece 812 that protrudes inward from one side of a pair of sides corresponding to the longitudinal direction of the frame 811. Have. On the other hand, the metal plate 82 projects out of the frame 821 from one of a pair of sides corresponding to the longitudinal direction of the frame 821 and a frame 821 having a rectangular frame shape that is long in one direction (vertical direction in FIG. 11). And a tongue piece 822.

本実施形態に係る固定部材4であれば、フレーム811の長手方向の両端部を同じ向きに折り曲げることにより、折り曲げられた一端部が端子片41を構成し、折り曲げられた他端部が接点片42を構成する。このとき、舌片812は、フレーム811(の一端部)が折り曲げられた向きとは反対向きに突出する形となり、端子片41のうちの第2小片412および第3小片413を構成する。つまり、端子片41の一部(第2小片412および第3小片413)は、フレーム811の内側に形成された舌片812によって構成される。   In the case of the fixing member 4 according to the present embodiment, by bending both ends in the longitudinal direction of the frame 811 in the same direction, the bent one end constitutes the terminal piece 41 and the bent other end is the contact piece. 42 is configured. At this time, the tongue piece 812 protrudes in a direction opposite to the direction in which the frame 811 (one end portion thereof) is bent, and constitutes the second small piece 412 and the third small piece 413 of the terminal piece 41. That is, a part of the terminal piece 41 (the second small piece 412 and the third small piece 413) is configured by the tongue piece 812 formed inside the frame 811.

一方、変形例に係る固定部材4であれば、フレーム821の長手方向の両端部を互いに逆向きに折り曲げることにより、折り曲げられた一端部が端子片41を構成し、折り曲げられた他端部が接点片42を構成する。このとき、舌片822は、フレーム821(の一端部)が折り曲げられた向きと同じ向きに突出する形となる。   On the other hand, in the case of the fixing member 4 according to the modified example, by bending both ends in the longitudinal direction of the frame 821 in opposite directions, the bent one end constitutes the terminal piece 41 and the bent other end is A contact piece 42 is formed. At this time, the tongue piece 822 has a shape protruding in the same direction as the direction in which the frame 821 (one end thereof) is bent.

すなわち、本実施形態に係る固定部材4は、上述したように、端子片41が、一対の連結片43,44の間を連結する第1小片411と、固定端子21が設けられた第2小片412と、第1小片411と第2小片412とを連結する第3小片413とを有している。第1小片411は、一対の連結片43,44に対し、第3方向において接点片42と同じ側に位置する。第2小片412は、一対の連結片43,44に対し、第3方向において接点片42と反対側に位置する。本実施形態の接点装置1は、固定部材4にこのような形状を採用したことにより、上述したように、端子片41の一部(第2小片412および第3小片413)をフレーム811の内側に形成された舌片812によって構成することができる。   That is, as described above, the fixing member 4 according to the present embodiment includes the first small piece 411 in which the terminal piece 41 connects the pair of connecting pieces 43 and 44 and the second small piece in which the fixed terminal 21 is provided. 412, and a third small piece 413 that connects the first small piece 411 and the second small piece 412. The first small piece 411 is located on the same side as the contact piece 42 in the third direction with respect to the pair of connecting pieces 43 and 44. The second small piece 412 is located on the opposite side of the contact piece 42 in the third direction with respect to the pair of connecting pieces 43 and 44. The contact device 1 of the present embodiment employs such a shape for the fixing member 4, so that a part of the terminal piece 41 (the second small piece 412 and the third small piece 413) is placed inside the frame 811 as described above. The tongue piece 812 formed in the can.

したがって、本実施形態の接点装置1によれば、変形例の接点装置1に比べて、固定部材の材料取り寸法を小さく抑えることができる。要するに、本実施形態の固定部材4を構成する金属板81の展開時の寸法L1は、変形例の固定部材4を構成する金属板82の展開時の寸法L2に比べて小さくなり、結果的に、本実施形態の接点装置1は変形例に比べて材料歩留りがよくなる。   Therefore, according to the contact device 1 of the present embodiment, the material measurement dimension of the fixing member can be reduced as compared with the contact device 1 of the modified example. In short, the dimension L1 when the metal plate 81 constituting the fixing member 4 of the present embodiment is unfolded is smaller than the dimension L2 when the metal plate 82 constituting the fixing member 4 according to the modification is unfolded. The contact device 1 of this embodiment has a better material yield than the modified example.

また、本実施形態の接点装置1は、変形例に比べて、上述したように端子片41のうち可動部材5と対向する部位の第3方向の寸法を、第3小片413の分だけ長く確保でき、端子片41と可動部材5との間に生じる斥力F1が大きくなるという利点もある。そのため、本実施形態の接点装置1は変形例に比較して短絡耐量のさらなる向上を図ることができる。   Further, the contact device 1 of the present embodiment ensures the third dimension of the portion of the terminal piece 41 that faces the movable member 5 as long as the third small piece 413 as compared with the modification. There is also an advantage that the repulsive force F1 generated between the terminal piece 41 and the movable member 5 is increased. Therefore, the contact device 1 of the present embodiment can further improve the short-circuit withstand capability as compared with the modified example.

なお、本実施形態では金属板に曲げ加工を施して固定部材4を製造することについて説明したが、固定部材4の製造方法を曲げ加工に限定する趣旨ではない。   In addition, although this embodiment demonstrated manufacturing the fixing member 4 by bending a metal plate, it is not the meaning which limits the manufacturing method of the fixing member 4 to bending.

(実施形態2)
本実施形態に係る接点装置1は、図12Aおよび図12Bに示すように、固定部材4の形状が実施形態1の接点装置1と相違する。以下、実施形態1と同様の構成については、共通の符号を付して適宜説明を省略する。
(Embodiment 2)
As shown in FIGS. 12A and 12B, the contact device 1 according to the present embodiment is different from the contact device 1 of the first embodiment in the shape of the fixing member 4. Hereinafter, the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof is omitted as appropriate.

本実施形態では、端子片41と接点片42とは、第1方向(上下方向)における一対の連結片43,44の両端部から、第1方向および第2方向(前後方向)の両方に直交する第3方向(左右方向)に沿って同じ向きに突出している。本実施形態では、端子片41は、一対の連結片43,44の上端部から左側に突出し、接点片42は、一対の連結片43,44の下端部から左側へ突出している。   In the present embodiment, the terminal piece 41 and the contact piece 42 are orthogonal to both the first direction and the second direction (front-rear direction) from both ends of the pair of connecting pieces 43, 44 in the first direction (up-down direction). Projecting in the same direction along the third direction (left-right direction). In the present embodiment, the terminal piece 41 protrudes to the left from the upper ends of the pair of connecting pieces 43 and 44, and the contact piece 42 protrudes to the left from the lower ends of the pair of connecting pieces 43 and 44.

端子片41と接点片42とは互いに略平行であって、それぞれ一対の連結片43,44とは略直交する。そのため、固定部材4は、全体として正面視が左側の開放された略C字状の形状を成す。固定端子21は端子片41の上面に取り付けられている。   The terminal piece 41 and the contact piece 42 are substantially parallel to each other, and the pair of connecting pieces 43 and 44 are substantially orthogonal to each other. Therefore, the fixing member 4 has a substantially C-shape that is open on the left side when viewed from the front. The fixed terminal 21 is attached to the upper surface of the terminal piece 41.

また、可動部材5は、可動接点32を起点として第3方向に沿って一対の連結片43,44から離れる向きに延長された形状である。本実施形態では、可動部材5は、接点片42に設けた固定接点31と対向する可動接点32を起点として、一対の連結片43,44とは反対側、つまり左方に延長された形状である。言い換えれば、本実施形態では、可動部材5が一対の連結片43,44の間を貫通するのではなく、可動接点32から見て可動部材5が延びる向きとは反対側(右側)に一対の連結片43,44が位置するように固定部材4と可動部材5とが組み合わされている。   The movable member 5 has a shape extended from the movable contact 32 as a starting point in a direction away from the pair of connecting pieces 43 and 44 along the third direction. In the present embodiment, the movable member 5 has a shape extending from the movable contact 32 facing the fixed contact 31 provided on the contact piece 42 to the opposite side of the pair of connecting pieces 43 and 44, that is, to the left. is there. In other words, in the present embodiment, the movable member 5 does not penetrate between the pair of connecting pieces 43 and 44, but on the opposite side (right side) to the direction in which the movable member 5 extends as viewed from the movable contact 32. The fixed member 4 and the movable member 5 are combined so that the connecting pieces 43 and 44 are positioned.

さらに、固定端子21は、第3方向において、固定接点31よりも一対の連結片43,44から離れた位置に配置されている。言い換えれば、固定端子21が固定接点31よりも左側に位置するように、固定部材4は、端子片41が接点片42よりも左方に張り出した形状に形成されている。   Further, the fixed terminal 21 is disposed at a position farther from the pair of connecting pieces 43 and 44 than the fixed contact 31 in the third direction. In other words, the fixing member 4 is formed in a shape in which the terminal piece 41 projects to the left of the contact piece 42 so that the fixed terminal 21 is positioned on the left side of the fixed contact 31.

ここで、図12Aおよび図12Bにおいては、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1が、接点部3から右方へ引き伸ばされた状態を一例として示している。アークA1の引き伸ばされる向きは、磁界発生源としての1〜3個の永久磁石の配置や極性によって決まるが、本実施形態の接点装置1であっても、磁界発生源に関しては実施形態1と同様に種々の構成を採用可能である。   Here, in FIG. 12A and FIG. 12B, the state where the arc A1 generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is extended rightward from the contact portion 3 is shown as an example. Yes. The direction in which the arc A1 is stretched is determined by the arrangement and polarity of 1 to 3 permanent magnets as the magnetic field generation source. Even in the contact device 1 of the present embodiment, the magnetic field generation source is the same as in the first embodiment. Various configurations can be employed.

以上説明した本実施形態の接点装置1は、実施形態1と同様に、一対の連結片43,44間の空間を利用することで、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1を引き伸ばすためのスペースを、効率的に確保できる。   As described in the first embodiment, the contact device 1 of the present embodiment described above uses the space between the pair of connecting pieces 43 and 44, so that when the contact portion 3 is opened, the fixed contact 31 and the movable contact 32. It is possible to efficiently secure a space for extending the arc A1 generated between the two.

すなわち、一対の連結片43,44間には隙間があるため、この隙間を利用することで、接点装置1は、固定部材4の短手方向(第2方向)にアークA1を引き伸ばさなくても、固定部材4との干渉を避けつつアークA1を引き伸ばすことができる。本実施形態のように可動接点32から見て可動部材5が延びる向きとは反対側に一対の連結片43,44が位置する構成では、接点装置1は、一対の連結片43,44の間を通してアークA1を引き伸ばすことが可能である。   That is, since there is a gap between the pair of connecting pieces 43 and 44, the contact device 1 does not have to stretch the arc A <b> 1 in the short direction (second direction) of the fixing member 4 by using this gap. The arc A1 can be stretched while avoiding interference with the fixing member 4. In the configuration in which the pair of connecting pieces 43 and 44 are located on the opposite side to the direction in which the movable member 5 extends when viewed from the movable contact 32 as in the present embodiment, the contact device 1 is between the pair of connecting pieces 43 and 44. The arc A1 can be stretched through.

要するに、本実施形態の構成によれば、可動接点32から見て可動部材5が延びる向きとは反対側、つまり接点部3の右方には、図12Aおよび図12Bに示すように、一対の連結片43,44の間を通して開けた空間が形成されることになる。したがって、接点装置1は、図12Aおよび図12Bに例示するように、接点部3から一対の連結片43,44の間を通して右方にアークA1を引き伸ばすことによって、固定部材4との接触を避けつつアークA1を十分に引き伸ばすことが可能である。結果的に、接点装置1は、省スペースで比較的高い遮断性能を実現でき、小型化を図りながらも、大電流に対しての遮断性能を向上させることができる、という利点がある。   In short, according to the configuration of the present embodiment, as shown in FIG. 12A and FIG. A space opened between the connecting pieces 43 and 44 is formed. Accordingly, as illustrated in FIGS. 12A and 12B, the contact device 1 avoids contact with the fixing member 4 by extending the arc A1 rightward from the contact portion 3 between the pair of connecting pieces 43 and 44. However, it is possible to sufficiently stretch the arc A1. As a result, the contact device 1 has an advantage that it can realize a relatively high breaking performance in a space-saving manner, and can improve the breaking performance against a large current while reducing the size.

また、本実施形態の接点装置1の構成によれば、実施形態1と同様に、短絡耐量(閉状態を維持できる短絡電流の上限値)が向上する、という利点もある。すなわち、接点装置1は、図13に示すように、可動接点32が閉位置にある状態(接点部3の閉状態)において一対の固定端子21,22に電流が流れると、互いに対向し且つ略平行の関係にある端子片41と可動部材5とに逆向きの電流が流れる。つまり、端子片41を流れる電流I1と可動部材5を流れる電流I2とは互いに逆向きの関係になるため、これら逆向きの平行電流(電流I1および電流I2)の間には斥力F1が働く。   Further, according to the configuration of the contact device 1 of the present embodiment, as in the first embodiment, there is an advantage that the short-circuit tolerance (the upper limit value of the short-circuit current that can maintain the closed state) is improved. That is, as shown in FIG. 13, when a current flows through the pair of fixed terminals 21 and 22 in a state where the movable contact 32 is in the closed position (closed state of the contact portion 3), the contact device 1 faces each other and substantially A reverse current flows through the terminal piece 41 and the movable member 5 in a parallel relationship. That is, since the current I1 flowing through the terminal piece 41 and the current I2 flowing through the movable member 5 are in opposite directions, a repulsive force F1 acts between these opposite parallel currents (current I1 and current I2).

これにより、接点装置1は、たとえば短絡電流などの大電流が接点部3を流れた際に、可動接点32を固定接点31から引き離す向きの力(電磁反発力)が生じたとしても、上記斥力F1により、可動接点32が固定接点31に接触した状態を維持しやすくなる。その結果、本実施形態の接点装置1は、短絡耐量(閉状態を維持できる短絡電流の上限値)が向上するという利点がある。   Thereby, even if a force (electromagnetic repulsive force) in the direction of pulling the movable contact 32 away from the fixed contact 31 is generated when a large current such as a short-circuit current flows through the contact portion 3, the contact device 1 F1 makes it easy to maintain the state in which the movable contact 32 is in contact with the fixed contact 31. As a result, the contact device 1 of the present embodiment has an advantage that the short-circuit tolerance (the upper limit value of the short-circuit current that can maintain the closed state) is improved.

なお、図13では、第1固定端子21から第2固定端子22に向かう電流を想定しているため、端子片41を流れる電流I1は右向き、可動部材5を流れる電流I2は左向きである。第2固定端子22から第1固定端子21に向かう電流を想定すると、端子片41を流れる電流I1は左向き、可動部材5を流れる電流I2は右向きとなる。   In FIG. 13, since a current from the first fixed terminal 21 toward the second fixed terminal 22 is assumed, the current I1 flowing through the terminal piece 41 is directed rightward, and the current I2 flowing through the movable member 5 is directed leftward. Assuming a current from the second fixed terminal 22 toward the first fixed terminal 21, the current I1 flowing through the terminal piece 41 is directed leftward, and the current I2 flowing through the movable member 5 is directed rightward.

また、本実施形態の構成によれば、接点部3と一対の連結片43,44との第3方向の間隔を狭くできる、という利点もある。すなわち、たとえば一対の連結片43,44の間に隙間がない構成では、接点装置1は、第3方向において接点部3が固定部材4(一対の連結片43,44)に突き合わされる形になる。そのため、一対の連結片43,44を流れる電流によって生じる誘導磁場の影響を考慮すると、接点部3と一対の連結片43,44との間には第3方向に十分な間隔が必要になる。これに対して、本実施形態の構成によれば、一対の連結片43,44の間に隙間があるため、接点部3と一対の連結片43,44との第3方向の間隔を狭くでき、結果的に、第3方向における接点装置1の小型化につながる。   Moreover, according to the structure of this embodiment, there also exists an advantage that the space | interval of the 3rd direction of the contact part 3 and a pair of connection pieces 43 and 44 can be narrowed. That is, for example, in a configuration in which there is no gap between the pair of connecting pieces 43 and 44, the contact device 1 is configured such that the contact portion 3 is abutted against the fixing member 4 (the pair of connecting pieces 43 and 44) in the third direction. Become. Therefore, considering the influence of the induced magnetic field generated by the current flowing through the pair of connecting pieces 43 and 44, a sufficient interval in the third direction is required between the contact portion 3 and the pair of connecting pieces 43 and 44. On the other hand, according to the configuration of the present embodiment, since there is a gap between the pair of connecting pieces 43 and 44, the distance between the contact portion 3 and the pair of connecting pieces 43 and 44 in the third direction can be reduced. As a result, the contact device 1 in the third direction is reduced in size.

<変形例2>
次に、本実施形態の変形例となる接点装置1について、図14を参照して説明する。
<Modification 2>
Next, a contact device 1 as a modification of the present embodiment will be described with reference to FIG.

変形例の接点装置1は、固定部材4の形状が本実施形態の接点装置1と相違する。本変形例では、端子片41は、一対の連結片43,44の間を連結する第1小片411と、固定端子21が設けられた第2小片412と、第1小片411と第2小片412とを連結する第3小片413とを有している。第3小片413は、第3方向(左右方向)において所定の長さ寸法を持つ。   The contact device 1 of the modification is different from the contact device 1 of the present embodiment in the shape of the fixing member 4. In this modification, the terminal piece 41 includes a first small piece 411 that connects the pair of connecting pieces 43 and 44, a second small piece 412 provided with the fixed terminal 21, a first small piece 411, and a second small piece 412. And a third small piece 413 connecting the two. The third small piece 413 has a predetermined length dimension in the third direction (left-right direction).

図15では、本実施形態に係る固定部材(図15では「4A」とする)と、本変形例に係る固定部材(図15では「4B」する)とを対比している。図15に示すように、第3方向における両固定部材4A,4Bの寸法L10が同じであれば、第3方向における端子片41の寸法は、本実施形態の寸法L11に比べて、変形例の寸法L12の方が、第3小片413の分だけ長くなる。   15, the fixing member according to the present embodiment (referred to as “4A” in FIG. 15) and the fixing member according to the present modification (referred to as “4B” in FIG. 15) are compared. As shown in FIG. 15, if the dimension L10 of both the fixing members 4A and 4B in the third direction is the same, the dimension of the terminal piece 41 in the third direction is the modified example compared to the dimension L11 of the present embodiment. The dimension L12 is longer by the third piece 413.

本変形例の接点装置1は、本実施形態の接点装置1と同様に、小型化を図りながらも、大電流に対しての遮断性能を向上させることができ、また、短絡耐量(閉状態を維持できる短絡電流の上限値)が向上するという利点がある。さらに、本変形例の接点装置1は、端子片41のうち可動部材5と対向する部位の第3方向の寸法を、第3小片413の分だけ長く確保でき、端子片41と可動部材5との間に生じる斥力F1が大きくなる。したがって、接点装置1は短絡耐量のさらなる向上を図ることができる。   Similar to the contact device 1 of the present embodiment, the contact device 1 of the present modification can improve the breaking performance against a large current while reducing the size, and also can withstand short-circuit resistance (closed state). There is an advantage that the upper limit of the short-circuit current that can be maintained is improved. Furthermore, the contact device 1 according to the present modification can secure the dimension in the third direction of the portion of the terminal piece 41 facing the movable member 5 as long as the third small piece 413, and the terminal piece 41 and the movable member 5 The repulsive force F1 generated during the period increases. Therefore, the contact device 1 can further improve the short-circuit tolerance.

その他の構成および機能は実施形態1と同様である。   Other configurations and functions are the same as those of the first embodiment.

(実施形態3)
本実施形態に係る接点装置1は、図16Aおよび図16Bに示すように、固定部材4の形状が実施形態1の接点装置1と相違する。以下、実施形態1と同様の構成については、共通の符号を付して適宜説明を省略する。
(Embodiment 3)
As illustrated in FIGS. 16A and 16B, the contact device 1 according to the present embodiment is different from the contact device 1 according to the first embodiment in the shape of the fixing member 4. Hereinafter, the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof is omitted as appropriate.

本実施形態では、端子片41と接点片42とは、第1方向(上下方向)における一対の連結片43,44の両端部から、第1方向および第2方向(前後方向)の両方に直交する第3方向(左右方向)に沿って同じ向きに突出している。本実施形態では、端子片41は、一対の連結片43,44の上端部から右側に突出し、接点片42は、一対の連結片43,44の下端部から右側へ突出している。   In the present embodiment, the terminal piece 41 and the contact piece 42 are orthogonal to both the first direction and the second direction (front-rear direction) from both ends of the pair of connecting pieces 43, 44 in the first direction (up-down direction). Projecting in the same direction along the third direction (left-right direction). In the present embodiment, the terminal piece 41 protrudes to the right from the upper ends of the pair of connecting pieces 43 and 44, and the contact piece 42 protrudes to the right from the lower ends of the pair of connecting pieces 43 and 44.

端子片41と接点片42とは互いに略平行であって、それぞれ一対の連結片43,44とは略直交する。そのため、固定部材4は、全体として正面視が右側の開放された略C字状の形状を成す。固定端子21は端子片41の上面に取り付けられている。このような構成の接点装置1は、実施形態2の接点装置1において固定部材4を第3方向について反転させた構成に類似する。   The terminal piece 41 and the contact piece 42 are substantially parallel to each other, and the pair of connecting pieces 43 and 44 are substantially orthogonal to each other. Therefore, the fixing member 4 has a substantially C-shaped shape that is open on the right side when viewed from the front. The fixed terminal 21 is attached to the upper surface of the terminal piece 41. The contact device 1 having such a configuration is similar to a configuration in which the fixing member 4 is reversed in the third direction in the contact device 1 of the second embodiment.

また、可動部材5は、可動接点32を起点として一対の連結片43,44の間を通して第3方向に沿って延長された形状である。本実施形態では、可動部材5は、接点片42に設けた固定接点31と対向する可動接点32を起点として、一対の連結片43,44の間を通って左方に延長された形状である。言い換えれば、一対の連結片43,44の間を可動部材5が貫通するように固定部材4と可動部材5とが組み合わされている。   The movable member 5 has a shape extending in the third direction through the pair of connecting pieces 43 and 44 starting from the movable contact 32. In the present embodiment, the movable member 5 has a shape extending leftward through a pair of connecting pieces 43 and 44 starting from a movable contact 32 facing the fixed contact 31 provided on the contact piece 42. . In other words, the fixed member 4 and the movable member 5 are combined so that the movable member 5 penetrates between the pair of connecting pieces 43 and 44.

ここで、図16Aおよび図16Bにおいては、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1が、接点部3から右方へ引き伸ばされた状態を一例として示している。アークA1の引き伸ばされる向きは、磁界発生源としての1〜3個の永久磁石の配置や極性によって決まるが、本実施形態の接点装置1であっても、磁界発生源に関しては実施形態1と同様に種々の構成を採用可能である。   Here, in FIG. 16A and FIG. 16B, an example in which the arc A1 generated between the fixed contact 31 and the movable contact 32 when the contact portion 3 is opened is extended rightward from the contact portion 3 is shown. Yes. The direction in which the arc A1 is stretched is determined by the arrangement and polarity of 1 to 3 permanent magnets as the magnetic field generation source. Even in the contact device 1 of the present embodiment, the magnetic field generation source is the same as in the first embodiment. Various configurations can be employed.

以上説明した本実施形態の接点装置1は、実施形態1と同様に、一対の連結片43,44間の空間を利用することで、接点部3の開極時に固定接点31と可動接点32との間に生じるアークA1を引き伸ばすためのスペースを、効率的に確保できる。   As described in the first embodiment, the contact device 1 of the present embodiment described above uses the space between the pair of connecting pieces 43 and 44, so that when the contact portion 3 is opened, the fixed contact 31 and the movable contact 32. It is possible to efficiently secure a space for extending the arc A1 generated between the two.

すなわち、一対の連結片43,44間には隙間があるため、この隙間を利用することで、接点装置1は、固定部材4の短手方向(第2方向)にアークA1を引き伸ばさなくても、固定部材4との干渉を避けつつアークA1を引き伸ばすことができる。本実施形態のように可動部材5が一対の連結片43,44の間を貫通した構成では、接点装置1は、第3方向に沿って一対の連結片43,44から離れる向きにアークA1を引き伸ばすことで、固定部材4との干渉を避けてアークA1を引き伸ばすことができる。   That is, since there is a gap between the pair of connecting pieces 43 and 44, the contact device 1 does not have to stretch the arc A <b> 1 in the short direction (second direction) of the fixing member 4 by using this gap. The arc A1 can be stretched while avoiding interference with the fixing member 4. In the configuration in which the movable member 5 penetrates between the pair of connecting pieces 43 and 44 as in this embodiment, the contact device 1 causes the arc A1 to move away from the pair of connecting pieces 43 and 44 along the third direction. By stretching, the arc A1 can be stretched while avoiding interference with the fixing member 4.

要するに、本実施形態の構成によれば、接点部3から見て一対の連結片43,44と反対側、つまり接点部3の右方には、図16Aおよび図16Bに示すように、固定部材4が存在しない開けた空間が形成されることになる。言い換えれば、この構成の接点装置1は、アークA1を引き伸ばす先に電路が存在しないため、アークA1と電路との間の電気的な絶縁を考慮しなくとも、アークA1と電路との接触を回避できる。したがって、接点装置1は、図16Aおよび図16Bに例示するように、接点部3から右方にアークA1を引き伸ばすことによって、固定部材4との接触を避けつつアークA1を十分に引き伸ばすことが可能である。結果的に、接点装置1は、省スペースで比較的高い遮断性能を実現でき、小型化を図りながらも、大電流に対しての遮断性能を向上させることができる、という利点がある。   In short, according to the configuration of the present embodiment, as shown in FIGS. 16A and 16B, the fixing member is provided on the side opposite to the pair of connecting pieces 43 and 44 as viewed from the contact portion 3, that is, on the right side of the contact portion 3. An open space in which 4 does not exist is formed. In other words, the contact device 1 having this configuration avoids contact between the arc A1 and the electric circuit without considering the electrical insulation between the arc A1 and the electric circuit because the electric circuit does not exist at the point where the arc A1 is stretched. it can. Therefore, as illustrated in FIGS. 16A and 16B, the contact device 1 can sufficiently extend the arc A1 while avoiding contact with the fixing member 4 by extending the arc A1 from the contact portion 3 to the right. It is. As a result, the contact device 1 has an advantage that it can realize a relatively high breaking performance in a space-saving manner, and can improve the breaking performance against a large current while reducing the size.

その他の構成および機能は実施形態1と同様である。   Other configurations and functions are the same as those of the first embodiment.

1 接点装置
12 ケース
13 ヨーク
21 固定端子
31 固定接点
32 可動接点
4 固定部材
41 端子片
411 第1小片
412 第2小片
413 第3小片
42 接点片
43,44 連結片
5 可動部材
71,72,75 永久磁石
73 第1永久磁石
74 第2永久磁石
76 第3永久磁石
DESCRIPTION OF SYMBOLS 1 Contact apparatus 12 Case 13 Yoke 21 Fixed terminal 31 Fixed contact 32 Movable contact 4 Fixed member 41 Terminal piece 411 1st small piece 412 2nd small piece 413 3rd small piece 42 Contact piece 43,44 Connection piece 5 Movable member 71,72,75 Permanent magnet 73 First permanent magnet 74 Second permanent magnet 76 Third permanent magnet

Claims (13)

固定端子および固定接点が設けられた固定部材と、
可動接点が設けられ、前記固定接点に接触する閉位置と前記固定接点から離れる開位置との間で前記可動接点を第1方向に沿って移動させる可動部材とを備え、
前記固定部材は、前記固定端子が設けられた端子片と、前記固定接点が設けられた接点片と、前記固定端子と前記固定接点とを電気的に接続するように前記端子片と前記接点片とを連結する一対の連結片とを有し、
前記一対の連結片は、前記第1方向と直交する第2方向に所定の間隔を空けて並んでおり、
前記可動接点は、前記第1方向の位置が前記端子片と前記接点片との間の範囲内で、且つ前記第2方向の位置が前記一対の連結片の間の範囲内となるように配置されている
ことを特徴とする接点装置。
A fixed member provided with a fixed terminal and a fixed contact;
A movable member provided with a movable contact, and moving the movable contact along a first direction between a closed position in contact with the fixed contact and an open position away from the fixed contact;
The fixed member includes a terminal piece provided with the fixed terminal, a contact piece provided with the fixed contact, and the terminal piece and the contact piece so as to electrically connect the fixed terminal and the fixed contact. And a pair of connecting pieces for connecting
The pair of connecting pieces are arranged at a predetermined interval in a second direction orthogonal to the first direction,
The movable contact is disposed such that the position in the first direction is within a range between the terminal piece and the contact piece, and the position in the second direction is within a range between the pair of connecting pieces. It is a contact device characterized by being.
前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って同じ向きに突出しており、
前記可動部材は、前記可動接点を起点として前記第3方向に沿って前記一対の連結片から離れる向きに延長された形状であって、
前記固定端子は、前記第3方向において、前記固定接点よりも前記一対の連結片から離れた位置に配置されている
ことを特徴とする請求項1に記載の接点装置。
The terminal piece and the contact piece protrude in the same direction along a third direction orthogonal to both the first direction and the second direction from both ends of the pair of connecting pieces in the first direction. And
The movable member has a shape extended from the movable contact point as a starting point in a direction away from the pair of connecting pieces along the third direction,
The contact device according to claim 1, wherein the fixed terminal is disposed at a position farther from the pair of connecting pieces than the fixed contact in the third direction.
前記端子片は、前記一対の連結片の間を連結する第1小片と、前記固定端子が設けられた第2小片と、前記第3方向において所定の長さ寸法を持ち前記第1小片と前記第2小片とを連結する第3小片とを有する
ことを特徴とする請求項2に記載の接点装置。
The terminal piece includes a first small piece connecting between the pair of connecting pieces, a second small piece provided with the fixed terminal, a predetermined length in the third direction, and the first small piece and the The contact device according to claim 2, further comprising a third piece connecting the second piece.
前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って同じ向きに突出しており、
前記可動部材は、前記可動接点を起点として前記一対の連結片の間を通して前記第3方向に沿って延長された形状である
ことを特徴とする請求項1に記載の接点装置。
The terminal piece and the contact piece protrude in the same direction along a third direction orthogonal to both the first direction and the second direction from both ends of the pair of connecting pieces in the first direction. And
2. The contact device according to claim 1, wherein the movable member has a shape extending along the third direction through the pair of connecting pieces starting from the movable contact.
前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って互いに逆向きに突出しており、
前記可動部材は、前記可動接点を起点として前記一対の連結片の間を通して前記第3方向に沿って延長された形状である
ことを特徴とする請求項1に記載の接点装置。
The terminal piece and the contact piece protrude in opposite directions from both ends of the pair of connecting pieces in the first direction along a third direction orthogonal to both the first direction and the second direction. And
2. The contact device according to claim 1, wherein the movable member has a shape extending along the third direction through the pair of connecting pieces starting from the movable contact.
前記端子片と前記接点片とは、前記第1方向における前記一対の連結片の両端部から、前記第1方向および前記第2方向の両方に直交する第3方向に沿って突出しており、
前記可動部材は、前記可動接点を起点として前記一対の連結片の間を通して前記第3方向に沿って延長された形状であって、
前記端子片は、前記一対の連結片の間を連結する第1小片と、前記固定端子が設けられた第2小片と、前記第1小片と前記第2小片とを連結する第3小片とを有し、
前記第1小片は、前記一対の連結片に対し、前記第3方向において前記接点片と同じ側に位置し、
前記第2小片は、前記一対の連結片に対し、前記第3方向において前記接点片と反対側に位置するように構成されている
ことを特徴とする請求項1に記載の接点装置。
The terminal piece and the contact piece protrude from the both ends of the pair of connecting pieces in the first direction along a third direction orthogonal to both the first direction and the second direction,
The movable member has a shape extending along the third direction through the gap between the pair of connecting pieces starting from the movable contact,
The terminal piece includes a first small piece for connecting the pair of connecting pieces, a second small piece provided with the fixed terminal, and a third small piece for connecting the first small piece and the second small piece. Have
The first small piece is located on the same side as the contact piece in the third direction with respect to the pair of connecting pieces,
The contact device according to claim 1, wherein the second small piece is configured to be located on the opposite side of the contact piece in the third direction with respect to the pair of connecting pieces.
前記第2方向において前記可動接点を挟んで対向する一対の永久磁石を磁界発生源としてさらに備え、
前記一対の永久磁石は、異極性の磁極面が互いに対向するように配置されている
ことを特徴とする請求項1〜6のいずれか1項に記載の接点装置。
A pair of permanent magnets facing each other across the movable contact in the second direction as a magnetic field generation source;
The contact device according to any one of claims 1 to 6, wherein the pair of permanent magnets are arranged such that magnetic pole surfaces having different polarities face each other.
前記第2方向において前記可動接点を挟んで対向する一対の永久磁石を磁界発生源としてさらに備え、
前記一対の永久磁石は、同極性の磁極面が互いに対向するように配置されている
ことを特徴とする請求項1〜6のいずれか1項に記載の接点装置。
A pair of permanent magnets facing each other across the movable contact in the second direction as a magnetic field generation source;
The contact device according to any one of claims 1 to 6, wherein the pair of permanent magnets are arranged such that magnetic pole surfaces having the same polarity face each other.
前記第2方向において前記可動接点を挟んで対向するように配置された第1永久磁石および第2永久磁石からなる一対の永久磁石と、前記第1方向および前記第2方向の両方に直交する第3方向において磁極面が前記可動接点と対向するように配置された第3永久磁石とを磁界発生源としてさらに備え、
前記一対の永久磁石は、同極性の第1磁極面が互いに対向するように配置され、
前記第3永久磁石は、前記第1磁極面とは異極性の第2磁極面が前記可動接点と対向するように配置されている
ことを特徴とする請求項1〜6のいずれか1項に記載の接点装置。
A pair of permanent magnets composed of a first permanent magnet and a second permanent magnet arranged so as to face each other with the movable contact in the second direction, and a first perpendicular to both the first direction and the second direction. A third permanent magnet arranged so that the magnetic pole surface faces the movable contact in three directions as a magnetic field generation source;
The pair of permanent magnets are arranged so that the first magnetic pole surfaces having the same polarity face each other,
The said 3rd permanent magnet is arrange | positioned so that the 2nd magnetic pole surface of a different polarity from the said 1st magnetic pole surface may oppose the said movable contact. Any one of Claims 1-6 characterized by the above-mentioned. The contact device described.
前記一対の永久磁石は、前記第2方向の位置が前記一対の連結片と重なるように配置されている
ことを特徴とする請求項7〜9のいずれか1項に記載の接点装置。
The contact device according to any one of claims 7 to 9, wherein the pair of permanent magnets are arranged so that positions in the second direction overlap the pair of connecting pieces.
前記第1方向および前記第2方向の両方に直交する第3方向において磁極面が前記可動接点と対向するように配置された永久磁石を磁界発生源としてさらに備える
ことを特徴とする請求項1〜6のいずれか1項に記載の接点装置。
The magnetic field generating source further includes a permanent magnet arranged such that a magnetic pole surface faces the movable contact in a third direction orthogonal to both the first direction and the second direction. 6. The contact device according to any one of 6 above.
前記磁界発生源の生じる磁束を通す磁路の一部を形成するヨークをさらに備える
ことを特徴とする請求項7〜11のいずれか1項に記載の接点装置。
The contact device according to any one of claims 7 to 11, further comprising a yoke that forms a part of a magnetic path through which the magnetic flux generated by the magnetic field generation source passes.
非磁性材料からなり、少なくとも前記固定接点および前記可動接点を囲むケースをさらに備え、
前記磁界発生源は前記ケースの外側に配置されている
ことを特徴とする請求項7〜12のいずれか1項に記載の接点装置。
A case made of a nonmagnetic material, further comprising a case surrounding at least the fixed contact and the movable contact,
The contact device according to claim 7, wherein the magnetic field generation source is disposed outside the case.
JP2014198928A 2014-09-29 2014-09-29 Contact device Pending JP2016072020A (en)

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