JP2014143045A

JP2014143045A - Terminal block device and electrical appliance with terminal block device

Info

Publication number: JP2014143045A
Application number: JP2013009995A
Authority: JP
Inventors: Kensuke Kono; 兼祐河野; Yuichi Takashima; 祐一高嶋; Tomohiro Ozaki; 友寛小崎
Original assignee: Sanyo Electric Co Ltd; Kitani Electric Co Ltd
Current assignee: Sanyo Electric Co Ltd; Kitani Electric Co Ltd
Priority date: 2013-01-23
Filing date: 2013-01-23
Publication date: 2014-08-07

Abstract

【課題】端子台装置の正極線接続部と負極線接続部とに繋ぐ正極線と負極線とのターミナル端子の形状が互いに異なり、異なった極性側の接続部にターミナル端子を合わせようとした場合にはターミナル端子の平板部が適正な状態で置けず、そのネジ止めが行なえないようにして、正極線と負極線とを極性が適合した状態で各接続部に確実に繋ぐことができるようにする。
【解決手段】正極線接続部９と負極線接続部１０とを並べて一体に構成し、正極用ターミナル端子２１及び負極用ターミナル端子２２の少なくともいずれか一方のターミナル端子が他方のターミナル端子に対応する正極線接続部９もしくは負極線接続部１０のいずれかにネジ止めをする際に不具合を生じさせる障害部２３ａ、２３ｂを設けた。
【選択図】図４Kind Code: A1 When terminal terminals of a positive electrode wire and a negative electrode wire connected to a positive electrode wire connection portion and a negative electrode wire connection portion of a terminal block device are different from each other and an attempt is made to match the terminal terminal to a connection portion on a different polarity side In order to ensure that the flat part of the terminal terminal cannot be placed in the proper state and that it cannot be screwed, the positive and negative wires can be securely connected to each connecting part with the polarity being matched. To do.
A positive electrode line connecting portion and a negative electrode wire connecting portion are arranged side by side, and at least one of a positive terminal terminal and a negative terminal terminal corresponds to the other terminal terminal. Obstacle portions 23a and 23b that cause problems when screws are attached to either the positive electrode connection portion 9 or the negative electrode connection portion 10 are provided.
[Selection] Figure 4

Description

本発明は、直流電力の正極及び負極を端子台装置に接続する際の誤接続を防止する端子台装置と、この端子台装置を備える電気機器に関するものである。 The present invention relates to a terminal block device that prevents erroneous connection when a positive electrode and a negative electrode of DC power are connected to a terminal block device, and an electric device including the terminal block device.

再生可能エネルギーから得られる直流電力を交流電力に変換して系統へ供給する電気機器としては、例えば、太陽発電システム（図１０に示す）があり、家屋の屋根に太陽光発電をする太陽電池モジュールａを配設し、その太陽電池モジュールａからの直流電力の入力を開閉制御できる接続箱ｂ、この接続箱ｂを経て電力供給される直流電力を交流電力に変換する構成を備えた電気機器ｃ（例えば電力変換装置）がある。 As an electric device that converts DC power obtained from renewable energy into AC power and supplies it to the system, for example, there is a solar power generation system (shown in FIG. 10), and a solar cell module that generates solar power on the roof of a house a, a connection box b in which the input of DC power from the solar cell module a can be controlled to be opened and closed, and an electric device c having a configuration for converting DC power supplied through the connection box b into AC power (For example, a power converter).

そして、図１１〜図１３に示すように電気機器（電力変換装置）ｃには端子台装置ｄが組み入れられていて、その端子台装置ｄは、絶縁体で一体成型された台座部ｅに、左から順に負極線接続部、正極線接続部、及び複数の交流線接続部（系統接続用の３つの端子台と自立運転時の交流出力用の３つの端子台）が構成されている。図１２は前記端子台装置ｄにおける負極線接続部ｇ、正極線接続部ｆを示しており、直流入力の正極入力部ｈが繋がる正極線接続部ｆには導電板ｊを配して、これに直流供給側からの正極線ｌに取り付けたリング状のターミナル端子ｎがネジ止めされ、直流入力の負極入力部ｉが繋がる負極線接続部ｇには導電板ｋを配して、これに直流供給側からの負極線ｍに取り付けたリング状のターミナル端子ｏがネジ止めされていた。また、前記複数の交流線接続部に接続されるターミナル端子にも全て同じ形状のものが使用され、ターミナル端子の形状が同じであることから、特に正極線接続部と負極線接続部とを逆接続した場合に不具合が生じるものであった。 As shown in FIGS. 11 to 13, a terminal block device d is incorporated in the electric device (power conversion device) c, and the terminal block device d is attached to a pedestal portion e integrally formed of an insulator, In order from the left, a negative electrode line connection part, a positive electrode line connection part, and a plurality of AC line connection parts (three terminal blocks for system connection and three terminal blocks for AC output during independent operation) are configured. FIG. 12 shows a negative electrode line connection part g and a positive electrode line connection part f in the terminal block device d. A conductive plate j is arranged on the positive electrode line connection part f connected to the positive electrode input part h of the DC input. A ring-shaped terminal terminal n attached to a positive electrode wire l from the DC supply side is screwed, and a conductive plate k is arranged at a negative electrode wire connection portion g to which a negative input portion i of DC input is connected. The ring-shaped terminal terminal o attached to the negative electrode wire m from the supply side was screwed. In addition, terminal terminals connected to the plurality of AC line connecting parts are all of the same shape, and the terminal terminals have the same shape. Therefore, the positive line connecting part and the negative line connecting part are particularly reversed. When connected, there was a problem.

このような逆接続を防ぐ工夫としては、特許文献１に示されているように蓄電池においてその一方の蓄電池端子自体を凹部を有する形状にするとともに、他方蓄電池端子自体を凸部を有する形状にし、さらに一方の引出線に取り付けた引出線端子自体に前記凹部と嵌合する凸片を設け、他方の引出線に取り付けた引出線端子自体に前記凸部と嵌合する凹切欠部を設けた工夫が提案されており、一方の蓄電池端子に他方の引出線を対応させかけたり、他方の蓄電池端子に一方の引出線を対応させかけた場合に、蓄電池端子と引出線端子とが嵌まり合わないようにしたものがあった。 As a device for preventing such reverse connection, as shown in Patent Document 1, in the storage battery, one storage battery terminal itself has a shape having a recess, and the other storage battery terminal itself has a shape having a projection, Further, the lead wire terminal attached to one lead wire is provided with a convex piece that fits the concave portion, and the lead wire terminal attached to the other lead wire is provided with a concave notch portion that fits the convex portion. Has been proposed, and when the other lead wire is made to correspond to one storage battery terminal or one lead wire is made to correspond to the other storage battery terminal, the storage battery terminal and the lead wire terminal do not fit together There was something like that.

実開昭５８−０３８９７４号公報Japanese Utility Model Publication No. 58-038974

例えば、太陽電池で発電される直流電力を交流電力に変換する電力変換装置では、電力ケーブルを介して供給される直流電力を夫々端子台装置の正極線接続部と負極線接続部に接続する作業を行なっている。そして一般的にこの電力ケーブルの接続作業には家屋それぞれの形状によって異なる作業が必要になる。 For example, in a power conversion device that converts DC power generated by a solar cell into AC power, work for connecting DC power supplied via a power cable to the positive line connecting portion and the negative line connecting portion of the terminal block device, respectively. Is doing. In general, this power cable connection work requires different work depending on the shape of each house.

しかしながら、この電力ケーブルは正極用と負極用との二本の電線を対として用いる必要があり、両者に被覆の色に違いがあり、二本の電線のどちらの色にも接続先の極性を参照する対応があるものの、配線工事において限定的に定めているものではない。勿論、配線工事の際に二本の電線の内の一方の色の側を正極線用とし他方の色の側を負極線用と定めて取り扱うようになるが、端子台に接続する際に、この電線には正極・負極かかわらずに同じ形状のターミナル端子がかしめ固定されるため、電線の色を見落とした際には正極線と負極線とを端子台の正極線接続部と負極線接続部とに逆接続することがあった。 However, this power cable requires the use of two wires for the positive and negative electrodes as a pair, and there is a difference in the color of the coating on both of them. Although there is a correspondence to refer to, it is not limited in the wiring work. Of course, during wiring work, one color side of the two wires will be handled for the positive line and the other color side will be handled for the negative line, but when connecting to the terminal block, Because the terminal terminal of the same shape is caulked and fixed to this electric wire regardless of the positive and negative electrodes, if you overlook the color of the electric wire, connect the positive and negative wires to the positive and negative wire connections on the terminal block. And there was a reverse connection.

また、電力変換装置では直流電力が供給される端子台と交流電力が出力される端子台とが並置または単一の端子台として一体に構成されている場合が多く、さらにすべて同じ形状のターミナル端子が用いられている場合が多い。交流電力の出力には直流電力のような極性がなく電線の色分けは意味を有しておらず、直流電力、交流電力の配線が近接していることにより一層直流電力の逆接続を招き易くなっている。 Also, in power converters, a terminal block to which DC power is supplied and a terminal block to which AC power is output are often juxtaposed or integrally formed as a single terminal block. Is often used. The output of AC power is not as polar as DC power and the color coding of the wires has no meaning, and the close connection of the DC power and AC power wiring makes it easier to reverse connect DC power. ing.

この対策として上記特許文献１に示されている如く、例えば図１２の例を基にして説明すれば、正極線接続部ｆの導電板ｊのターミナル端子ｎを受ける部分自体の形状を凹部を有する形状とし、他方の負極線接続部ｇの導電板ｋのターミナル端子ｏを受ける部分自体の形状を凸部を有する形状とし、さらに正極線接続部ｆに対応のターミナル端子ｎにあっては、前記凹部に嵌まる凸片のある形状とし、負極線接続部ｇに対応のターミナル端子ｏにあっては、前記凸部が嵌まる凹欠部のある形状とすることが考えられる。 As a countermeasure against this, as described in Patent Document 1 described above, for example, based on the example of FIG. 12, the shape of the portion of the positive electrode connection portion f that receives the terminal terminal n of the conductive plate j has a recess. In the terminal terminal n corresponding to the positive electrode line connection portion f, the shape of the portion of the negative electrode line connection portion g that receives the terminal terminal o of the conductive plate k is a shape having a convex portion. It can be considered to have a shape with a convex piece that fits into the concave portion and a shape with a concave portion into which the convex portion fits in the terminal terminal o corresponding to the negative electrode line connecting portion g.

しかし、正極線接続部と負極線接続部とのそれぞれに配される導電板は、ターミナル端子のネジ止めに際しても変形することのないように厚みのある導電金属板からなるものであるため、上述したように板厚み方向で凹んでなる凹部や板厚み方向に盛り上がってなる凸部を形成するとコスト高になるという問題があり、導電板の小型化を図る場合での前記凹部、凸部の形成自体が困難なものとなる。このため、現状において導電板それぞれのターミナル端子を受ける上面部分は平坦であり、ターミナル端子も同一形状としており、誤接続の可能性を無くすことが難しかった。 However, since the conductive plate disposed in each of the positive electrode line connecting portion and the negative electrode line connecting portion is made of a thick conductive metal plate so as not to be deformed even when the terminal terminal is screwed, As described above, there is a problem that forming a concave portion that is recessed in the thickness direction of the plate or a convex portion that is raised in the thickness direction of the plate increases the cost, and the formation of the concave portion and the convex portion in the case of reducing the size of the conductive plate. It becomes difficult. For this reason, the upper surface part which receives the terminal terminal of each electrically-conductive board is flat now, and the terminal terminal is also made into the same shape, It was difficult to eliminate the possibility of an incorrect connection.

そこで本発明は上記事情に鑑み、端子台装置の正極線接続部と負極線接続部とに繋ぐ正極線と負極線とのターミナル端子の形状が互いに異なるようにし、異なった極性側の接続部にターミナル端子が合わないようにする端子台を提供することを目的とする。 Therefore, in view of the above circumstances, the present invention is such that the terminal terminals of the positive electrode line and the negative electrode line connected to the positive electrode line connection part and the negative electrode line connection part of the terminal block device are different from each other, and the different polarity side connection parts are used. An object of the present invention is to provide a terminal block that prevents terminal terminals from being fitted.

（請求項１の発明）
本発明は上記課題を考慮してなされたもので、直流電力の正極側が接続されるリング状の正極用ターミナル端子がネジ止めされる正極線接続部と前記直流電力の負極側が接続されるリング状の負極用ターミナル端子がネジ止めされる負極線接続部とを有してなる端子台装置において、
前記正極線接続部と前記負極線接続部とを並べて一体に構成し、前記正極用ターミナル端子及び前記負極用ターミナル端子の少なくともいずれか一方のターミナル端子が他方のターミナル端子に対応する前記正極線接続部もしくは前記負極線接続部のいずれかにネジ止めをする際に不具合を生じさせる障害部を有することを特徴とする端子台装置を提供して、上記課題を解消するものである。 (Invention of Claim 1)
The present invention has been made in consideration of the above problems, and is a ring-shaped connection in which a positive electrode line connection portion to which a ring-shaped positive terminal terminal connected to a positive electrode side of DC power is screwed and a negative electrode side of the DC power is connected. In the terminal block device having a negative electrode wire connection portion to which the negative electrode terminal is screwed,
The positive electrode line connection part and the negative electrode line connection part are arranged side by side, and the positive electrode terminal connection is such that at least one of the positive terminal terminal and the negative terminal terminal corresponds to the other terminal terminal. In order to solve the above-mentioned problems, there is provided a terminal block device having an obstacle portion that causes a problem when screwing either of the electrode portion or the negative electrode line connecting portion.

（請求項２の発明）
また、本発明の端子台装置にあっては、前記障害部は、前記正極用ターミナル端子及び前記負極用ターミナル端子の他方のターミナル端子の外形異形部分に嵌るものとすることが良好である。 (Invention of Claim 2)
In the terminal block device of the present invention, it is preferable that the obstruction part fits into a deformed portion of the other terminal terminal of the positive terminal terminal and the negative terminal terminal.

（請求項３の発明）
また、本発明の端子台装置にあっては、前記正極線接続部及び前記負極線接続部はそれぞれ絶縁体である台座部の上に導電板を重ねてなると共に、前記障害部は台座部の一部分を突出させた凸部であることが良好である。 (Invention of Claim 3)
In the terminal block device of the present invention, the positive electrode line connecting portion and the negative electrode line connecting portion are each formed by overlapping a conductive plate on a pedestal portion that is an insulator, and the obstacle portion is a pedestal portion. It is good that it is the convex part which made one part protrude.

（請求項４の発明）
また、本発明の端子台装置にあっては、前記導電板は、障害部を補強する立片を有することが良好である。 (Invention of Claim 4)
In the terminal block device of the present invention, it is preferable that the conductive plate has a standing piece that reinforces the obstacle.

（請求項５の発明）
また、本発明の端子台装置にあっては、前記正極線接続部に接続される前記正極用のターミナル端子は前記正極線接続部を示す表示を有し、前記負極線接続部に接続される前記負極用のターミナル端子は前記負極線接続部を示す表示を有することが良好である。 (Invention of Claim 5)
In the terminal block device of the present invention, the positive terminal connected to the positive line connecting portion has a display indicating the positive line connecting portion and is connected to the negative line connecting portion. It is favorable that the terminal terminal for the negative electrode has a display indicating the negative electrode line connecting portion.

（請求項６の発明）
また、請求項６の電気機器は、再生可能エネルギーから得られる直流電力を正極の直流電力が供給されるリング状の正極用ターミナル端子がネジ止めされる正極線接続部と負極の直流電力が供給されるリング状の負極用ターミナル端子がネジ止めされる負極線接続部とを有してなる端子台装置を介して入力する当該端子台装置を備える電気機器において、
前記端子台装置から入力した前記直流電力を交流電力に変換して系統へ出力する複数の交流線接続部を有し、前記負極線接続部、前記正極線接続部、及び前記複数の交流線接続部を順に並べて一体に構成し、前記正極用ターミナル端子及び前記負極用ターミナル端子の少なくともいずれか一方のターミナル端子が他方のターミナル端子に対応する前記正極線接続部もしくは前記負極線接続部のいずれかにネジ止めをする際に不具合を生じさせる障害部を有する端子台装置を備えることを特徴とする電気機器であり、この電気機器を提供して上記課題を解消するものである。 (Invention of Claim 6)
According to another aspect of the electrical device of the present invention, the DC power obtained from the renewable energy is supplied with the positive line connecting portion to which the ring-shaped positive terminal terminal to which the positive DC power is supplied is screwed and the negative DC power. In an electrical apparatus comprising the terminal block device that is input via a terminal block device having a negative electrode wire connection portion to which a ring-shaped negative electrode terminal terminal is screwed,
It has a plurality of AC line connection parts that convert the DC power input from the terminal block device into AC power and output it to the system, the negative line connection part, the positive line connection part, and the plurality of AC line connections Are arranged in order and integrated, and at least one of the positive terminal terminal and the negative terminal terminal corresponds to the other terminal terminal, either the positive line connecting part or the negative line connecting part. It is an electrical device comprising a terminal block device having an obstruction that causes a problem when screwing to the device, and this electrical device is provided to solve the above problems.

（請求項７の発明）
また、本発明の電気機器にあっては、前記障害部は、前記正極用ターミナル端子及び前記負極用ターミナル端子の他方のターミナル端子の外形異形部分に嵌る請求項６に記載の端子台装置を備えることが良好である。 (Invention of Claim 7)
Moreover, in the electric equipment of this invention, the said obstruction part is equipped with the terminal block apparatus of Claim 6 fitted in the external shape deformed part of the other terminal terminal of the said terminal terminal for positive electrodes and the terminal terminal for negative electrodes. Is good.

（請求項８の発明）
また、本発明の電気機器にあっては、前記障害部は、前記複数の交流線接続部に夫々接続され前記系統へつながるリング状のターミナル端子の前記正極接続部もしくは前記負極接続部への接続に際して不具合を生じさせる請求項６又は請求項７に記載の端子台装置を備えることが良好である。 (Invention of Claim 8)
Further, in the electrical device of the present invention, the obstacle is connected to the positive electrode connecting portion or the negative electrode connecting portion of each of the ring-shaped terminal terminals connected to the plurality of AC line connecting portions and connected to the system. In this case, it is preferable to provide the terminal block device according to claim 6 or 7, which causes a problem.

（請求項１の発明の効果）
請求項１の発明によれば、正極線接続部と負極線接続部に正極用ターミナル端子と前記負極用ターミナル端子とをその極性を不一致にして対応させようとした際、ネジ止めをすることへの不具合を生じさせる障害部の機能が働いた部分では接続部とターミナル端子とのネジ止めそのものができなくなり、作業者は誤接続であることを簡単に知ることができて、その誤接続を未然に防止することができるという優れた効果を奏するものである。 (Effect of the invention of claim 1)
According to the first aspect of the present invention, when the positive electrode terminal and the negative electrode terminal are made to correspond to the positive electrode terminal and the negative electrode connector with the polarities mismatched, the screws are fixed. In the part where the function of the faulty part that causes the malfunction occurs, it becomes impossible to screw the connection part and the terminal terminal itself, and the operator can easily know that it is a wrong connection, and the erroneous connection has not occurred. It has an excellent effect that it can be prevented.

（請求項２の発明の効果）
請求項２の発明によれば、障害部がターミナル端子の外形異形部分に嵌まるようにしているので、ターミナル端子を各接続部に対応させる際に、前記障害部の有無、位置、数などの確認とターミナル端子側の形状の確認とを行なうことで、極性が一致する対応付けであるか否かが簡単に判るようになる。また、障害部がターミナル端子の外形異形部分に嵌まるようにしているため、ターミナル端子自体の位置決めが頗る良好になるという優れた効果を奏する。 (Effect of the invention of claim 2)
According to the invention of claim 2, since the obstacle part fits into the outer shape deformed part of the terminal terminal, when the terminal terminal is made to correspond to each connection part, the presence / absence, position, number, etc. of the obstacle part are By confirming and confirming the shape of the terminal terminal side, it is possible to easily determine whether or not the correspondence matches the polarity. In addition, since the obstacle part is fitted in the externally shaped part of the terminal terminal, the terminal terminal itself is excellently positioned.

（請求項３の発明の効果）
請求項３の発明によれば、障害部は台座部の一部分を上方に向けて突出させた凸部であるので、その障害部の構造が極めて簡単で端子台装置の製造コストを引き上げないという優れた効果を奏する。 (Effect of the invention of claim 3)
According to the invention of claim 3, since the obstacle part is a convex part protruding a part of the pedestal part upward, the structure of the obstacle part is extremely simple and does not raise the manufacturing cost of the terminal block device. Has an effect.

（請求項４の発明の効果）
請求項４の発明によれば、障害部が立片にて支えられているのでその障害部自体の強度が向上し、極性不適合の状態でターミナル端子が接続部に配置されかけても障害部がそのターミナル端子に当接し続けて、誤接続をより確実に防止できるという優れた効果を奏する。 (Effect of the invention of claim 4)
According to the invention of claim 4, since the obstacle part is supported by the standing piece, the strength of the obstacle part itself is improved, and even if the terminal terminal is arranged at the connection part in a state of polarity incompatibility, It continues to abut on the terminal terminal, and there is an excellent effect that erroneous connection can be prevented more reliably.

（請求項５の発明の効果）
請求項５の発明によれば、正極用、及び負極用のターミナル端子それぞれに設けられた表示を作業者が目視にて確認することで、そのターミナル端子を対応付ける接続部を簡単に把握でき、誤接続をより確実に防止できるという優れた効果を奏する。 (Effect of the invention of claim 5)
According to the invention of claim 5, the operator can visually grasp the display provided on each of the positive electrode terminal and the negative electrode terminal terminal so that the connecting portion to which the terminal terminal is associated can be easily grasped. There is an excellent effect that the connection can be more reliably prevented.

（請求項６の発明の効果）
請求項６の発明によれば、端子台装置に直流電力供給側のケーブルにおける正極線と負極線とを接続するに際し、極性を誤って接続しかけた場合には、端子台装置の一方の接続部では、誤った極性側の端子となっているターミナル端子を接続することができないようになり、作業者は誤接続であることを簡単に知ることができて、誤接続を未然に防止することができるという優れた効果を奏するものである。 (Effect of the invention of claim 6)
According to the sixth aspect of the present invention, when connecting the positive and negative electrodes in the cable on the DC power supply side to the terminal block device, if the polarity is wrongly connected, one connection portion of the terminal block device is connected. Then, it becomes impossible to connect the terminal terminal which is the terminal of the wrong polarity side, the operator can easily know that it is a wrong connection, and can prevent the wrong connection in advance. It has an excellent effect of being able to.

（請求項７の発明の効果）
請求項７の発明によれば、障害部がターミナル端子の外形異形部分に嵌まるようにしているので、ターミナル端子を各接続部に対応させる際に、前記障害部の有無、位置、数などの確認とターミナル端子側の形状の確認とを行なうことで、極性が一致する対応付けであるか否かが簡単に判るようになる。また、障害部がターミナル端子の外形異形部分に嵌まるようにしているため、ターミナル端子自体の位置決めが頗る良好になるという優れた効果を奏する。 (Effect of the invention of claim 7)
According to the invention of claim 7, since the obstacle part fits into the outer shape deformed part of the terminal terminal, when the terminal terminal is made to correspond to each connection part, the presence / absence, position, number, etc. of the obstacle part are By confirming and confirming the shape of the terminal terminal side, it is possible to easily determine whether or not the correspondence matches the polarity. In addition, since the obstacle part is fitted in the externally shaped part of the terminal terminal, the terminal terminal itself is excellently positioned.

（請求項８の発明の効果）
請求項８の発明によれば、複数の交流線接続部に夫々接続されて系統へつながるリング状のターミナル端子を、誤って正極線接続部や負極線接続部へ対応付けして誤接続することを確実に防止できるという優れた効果を奏するものである。 (Effect of the invention of claim 8)
According to the invention of claim 8, the ring-shaped terminal terminal connected to the system by being connected to each of the plurality of AC line connecting parts is erroneously associated with the positive line connecting part or the negative line connecting part. This is an excellent effect that can be reliably prevented.

本発明に係る電気機器の一例を概略的に示す説明図である。It is explanatory drawing which shows roughly an example of the electric equipment which concerns on this invention. 本発明に係る端子台装置の第一の例での並設された正極線接続部と負極線接続部とを示す説明図である。It is explanatory drawing which shows the positive electrode wire connection part and the negative electrode wire connection part which were arranged in parallel in the 1st example of the terminal block apparatus which concerns on this invention. 第一の例を分解状態で示す説明図である。It is explanatory drawing which shows a 1st example in a decomposition | disassembly state. 第一の例におけるターミナル端子を示すもので、（ア）は正極のターミナル端子を示す説明図、（イ）は負極のターミナル端子を示す説明図である。The terminal terminal in a 1st example is shown, (A) is explanatory drawing which shows a positive terminal terminal, (A) is explanatory drawing which shows a negative terminal terminal. 第一の例における負極線接続部とターミナル端子との対応を示すもので、（ア）は適正な接続状態を示す説明図、（イ）は障害部に正極のターミナル端子が当接した状態を示す説明図である。It shows the correspondence between the negative electrode line connection part and the terminal terminal in the first example, (A) is an explanatory diagram showing an appropriate connection state, (A) is a state where the positive terminal terminal is in contact with the obstacle part. It is explanatory drawing shown. 第二の例を示す説明図である。It is explanatory drawing which shows a 2nd example. 第二の例を分解状態で示す説明図である。It is explanatory drawing which shows a 2nd example in a decomposition | disassembly state. 第二の例におけるターミナル端子を示すもので、（ア）は正極のターミナル端子を示す説明図、（イ）は負極のターミナル端子を示す説明図である。The terminal terminal in a 2nd example is shown, (A) is explanatory drawing which shows a positive terminal terminal, (A) is explanatory drawing which shows a negative terminal terminal. ターミナル端子の他の例を示すもので、（ア）は正極のターミナル端子を示す説明図、（イ）は負極のターミナル端子を示す説明図である。The other example of a terminal terminal is shown, (A) is explanatory drawing which shows a positive terminal terminal, (A) is explanatory drawing which shows a negative terminal terminal. 太陽光発電を概略的に示す説明図である。It is explanatory drawing which shows a solar power generation schematically. 従来における電力変換装置とした電気機器を一部切り欠いて示す説明図である。It is explanatory drawing which notches and shows a part of electric equipment used as the conventional power converter device. 従来における電気機器における端子台装置の一部分を示す説明図である。It is explanatory drawing which shows a part of terminal block apparatus in the conventional electric equipment. 従来における電気機器における端子台装置の一部分を分解状態で示す説明図である。It is explanatory drawing which shows a part of terminal block apparatus in the conventional electric equipment in an exploded state.

つぎに本発明を図１から図９に示す実施の形態に基づいて詳細に説明する。なお、上述した従来の例と構成が重複する部分は同符号を付してその説明を省略する。図１に示すように電力変換装置（電気機器）１は、主に直流電力を交流電力に変換する構成の部分Ａと、直流側につながる正極線接続部９及び負極線接続部１０、系統側へつながる交流接続部（交流用端子２つと中間端子との３つの端子）、及び自立運転時の交流接続部（交流用端子２つと接地用端子との３つの端子）が１列の直線状に配置されるように絶縁性の樹脂で一体に成形された端子台装置４のある部分Ｂとをケース内に組み入れられているものである。本発明は前記部分Ｂの端子台装置４に工夫が施されている。 Next, the present invention will be described in detail based on the embodiment shown in FIGS. In addition, the part which a structure overlaps with the conventional example mentioned above attaches | subjects the same code | symbol, and abbreviate | omits the description. As shown in FIG. 1, a power conversion device (electrical device) 1 is mainly composed of a part A configured to convert DC power into AC power, a positive line connecting part 9 and a negative line connecting part 10 connected to the DC side, and the system side AC connection section (3 terminals with 2 terminals for AC and intermediate terminal) and AC connection section (3 terminals with 2 terminals for AC connection and grounding terminal) at the time of self-sustained operation in a straight line A portion B of the terminal block device 4 formed integrally with an insulating resin so as to be disposed is incorporated in the case. In the present invention, the terminal block device 4 of the part B is devised.

（第一の例）
接続箱ｂ（図１０参照）と電力変換装置１とをケーブル接続する際の電力変換装置１に組み入れられた上記端子台装置４にあっては、正極線接続部９と負極線接続部１０とに対しケーブル８の正極線１３と負極線１４とが誤接続されないようにするための工夫が設けられていて、図２から図５はその第一の例を示している。この端子台装置４においては、直流電力入力側（直流接続側）の正極入力部６と正極線接続部９との内、正極線接続部９の方が高い位置になる階段状に成形されている。負極入力部７と負極線接続部１０とにおいても同様の高さ関係がある。 (First example)
In the terminal block device 4 incorporated in the power conversion device 1 when the connection box b (see FIG. 10) and the power conversion device 1 are cable-connected, the positive line connection portion 9 and the negative line connection portion 10 On the other hand, a device for preventing the positive electrode wire 13 and the negative electrode wire 14 of the cable 8 from being erroneously connected is provided, and FIGS. 2 to 5 show a first example thereof. In the terminal block device 4, the positive electrode input portion 6 and the positive electrode wire connection portion 9 on the direct current power input side (DC connection side) are formed in a step shape in which the positive electrode wire connection portion 9 is higher. Yes. There is a similar height relationship between the negative electrode input unit 7 and the negative electrode line connection unit 10.

図３に示すように、正極入力部６から正極線接続部９にかけては略Ｚ字状に屈曲した導電板１１を取り付けられ、負極入力部７から負極線接続部１０にかけても同じように略Ｚ字状に屈曲した導電板１２を取り付けられており、台座部５の前記正極線接続部９（取付面１９）には導電板１１の上平板１１ａが位置し、前記負極線接続部１０（取付面２０）には導電板１２の上平板１２ａが位置している。 As shown in FIG. 3, a conductive plate 11 bent in a substantially Z shape is attached from the positive electrode input portion 6 to the positive electrode wire connection portion 9, and similarly from the negative electrode input portion 7 to the negative electrode wire connection portion 10, approximately Z A conductive plate 12 bent in a letter shape is attached, and an upper flat plate 11a of the conductive plate 11 is located on the positive line connecting portion 9 (mounting surface 19) of the pedestal portion 5, and the negative line connecting portion 10 (mounting) The upper plate 12a of the conductive plate 12 is located on the surface 20).

正極線接続部９と負極線接続部１０とのそれぞれには、正極線１３にかしめ固定したターミナル端子２１と、負極線１４にかしめ固定したターミナル端子２２とのそれぞれをネジ止めできるように上平板１１ａ、１２ａからその下位の取付面１９、２０にかけて、その取付面１９、２０の中央線上となるようにしてネジ孔１６ａ、ｂが設けられている。また、前記上平板１１ａと上平板１２ａとが配置されている部分においては、正極線接続部９と負極線接続部１０とには互いに異なる位置にして障害部２３ａ、２３ｂ（突起、または凸部など）を台座部５の樹脂による成形の際に一体に成形されていて、図３に示されているように正極線接続部９に障害部２３ａがあり、負極線接続部１０に障害部２３ｂがある。 Each of the positive electrode line connecting portion 9 and the negative electrode line connecting portion 10 has an upper flat plate so that a terminal terminal 21 caulked and fixed to the positive electrode wire 13 and a terminal terminal 22 caulked and fixed to the negative electrode wire 14 can be screwed. Screw holes 16a and 16b are provided from 11a and 12a to the lower mounting surfaces 19 and 20 so as to be on the center line of the mounting surfaces 19 and 20. Further, in the portion where the upper flat plate 11a and the upper flat plate 12a are disposed, the obstructing portions 23a and 23b (protrusions or convex portions) are formed at positions different from each other in the positive electrode connecting portion 9 and the negative electrode connecting portion 10. Etc.) when the pedestal portion 5 is molded with the resin, as shown in FIG. 3, the positive line connecting portion 9 has the obstruction portion 23a, and the negative line connecting portion 10 has the obstruction portion 23b. There is.

正極線接続部９の障害部２３ａに関して、取付面１９では、正極入力部６側（段落ちされた側）の端部の両側に設けられており、取付面１９の端部両側の部分を上方に向けて突設させた凸部によってその障害部２３ａが台座部５に対して一体に成されている。さらにこの対の障害部２３ａは両脇の壁にも一体となって成形されており、これによって障害部２３ａそれぞれは、ターミナル端子をネジ止めした際の押え付け力で段落ち側に倒れ込みしないように補強した構造としている。この対の障害部２３ａは取付面１９の中央線位置に対して線対称となる位置にあり、形状も線対称としている。 With respect to the obstruction 23a of the positive line connecting portion 9, the mounting surface 19 is provided on both sides of the positive input portion 6 side (stepped side) end portion, and the both end portions of the mounting surface 19 are located upward. The obstacle 23 a is integrally formed with the pedestal 5 by the projecting portion protruding toward the base 5. Further, the pair of obstacle portions 23a are integrally formed on both side walls, so that each of the obstacle portions 23a does not fall into the stepped side due to the pressing force when the terminal terminal is screwed. It has a reinforced structure. The pair of obstacle portions 23a is in a line-symmetrical position with respect to the center line position of the mounting surface 19, and the shape is also line-symmetrical.

負極線接続部１０の障害部２３ｂに関して、取付面２０では、負極入力部７側（段落ちされた側）の端部の中央に設けられており、その中央の部分を上方に向けて突出させた凸部によって台座部５に一体にして形成されている。取付面２０でのこの障害部２３ｂは一つであって単独で突出しているものであるが、ターミナル端子をネジ止めした際の押え付け力を受けても段落ち側に折曲しないように後述の導電板で支持されて補強されているものである。この単独で起立する障害部２３ｂは取付面２０の中央線位置に対してその中央線上に位置し、単独の形状も線対称の形状としている。 With respect to the obstruction 23b of the negative electrode line connecting portion 10, the mounting surface 20 is provided at the center of the end on the negative electrode input portion 7 side (stepped side), and the central portion protrudes upward. It is formed integrally with the pedestal part 5 by the convex part. This obstacle 23b on the mounting surface 20 is one and protrudes alone, but it will be described later so that it does not bend to the stepped side even if it receives the pressing force when the terminal terminal is screwed. It is supported and reinforced by the conductive plate. The obstacle portion 23b that stands alone is located on the center line with respect to the center line position of the mounting surface 20, and the single shape is also a line-symmetric shape.

また、上記障害部２３ａ、２３ｂの上端は、両接続部９、１０に対して適正な極性側となっているターミナル端子が上方から乗せ置かれるときに上平板１１ａ、１２ａ側にスムーズに下りるようにするために面取りされた形状としている。 Further, the upper ends of the obstacles 23a and 23b are smoothly lowered to the upper flat plates 11a and 12a when the terminal terminals having the proper polarity side with respect to the connection parts 9 and 10 are placed from above. The shape is chamfered to make it.

図３に示すように、正極線接続部９に配置される導電板１１の上平板１１ａには、正極線接続部９での対の障害部２３ａの位置を避けてその障害部２３ａを上方に通すことができるように切り欠きからなる回避部２４ａが設けられているとともに、負極線接続部１０に配置される導電板１２の上平板１２ａには、負極線接続部１０の単独の障害部２３ｂの位置を避けてその障害部２３ｂを上方に通すことができるように開口からなる回避部２４ｂが設けられている。なお、図３に示す分解した構成では台座部５の下部（接続器として複数の端子台構成部分の基部が繋がる箇所）は端子台装置４の説明を容易にするためにその図示を略した。 As shown in FIG. 3, the upper plate 11 a of the conductive plate 11 disposed in the positive electrode connection portion 9 avoids the position of the pair of obstruction portions 23 a in the positive electrode connection portion 9 and raises the obstruction portion 23 a upward. An avoiding portion 24a made of a notch is provided so that it can be passed, and the upper plate 12a of the conductive plate 12 disposed in the negative electrode wire connecting portion 10 is provided with a single obstacle portion 23b of the negative electrode wire connecting portion 10. An avoidance portion 24b made of an opening is provided so that the obstacle portion 23b can be passed upward while avoiding the position of. In the disassembled configuration shown in FIG. 3, the illustration of the lower portion of the base portion 5 (where the base portions of a plurality of terminal block constituent portions are connected as a connector) is omitted to facilitate explanation of the terminal block device 4.

さらに上平板１２ｂの開口からなる回避部２４ｂにあっては、ターミナル端子を重ね合わせた際にそのターミナル端子と干渉しない位置、実施の例にあっては開口の回避部２４ｂにおける屈曲部分側の辺に立片２５が一体にして立ち上げられており、図５（イ）に示すように負極線接続部１０において上平板１２ａを配置することで前記立片２５が障害部２３ｂの側面に対応位置して、この障害部２３ｂがターミナル端子から押さえ付けられても倒れ込みしないように補強する。 Further, in the avoiding portion 24b formed of the opening of the upper flat plate 12b, the position on the bent portion side in the avoiding portion 24b of the opening in the position where it does not interfere with the terminal terminal when the terminal terminals are overlapped. As shown in FIG. 5 (a), the upper plate 12a is disposed in the negative electrode line connecting portion 10 so that the standing piece 25 corresponds to the side surface of the obstacle portion 23b. Then, the obstacle 23b is reinforced so as not to fall down even if it is pressed from the terminal terminal.

図４に示すように、一方、正極線１３にかしめ固定されたターミナル端子２１（図４（ア））と、負極線１４にかしめ固定されたターミナル端子２２（図４（イ））とにおいては、従来のターミナル端子と同じように上記両接続部９、１０のネジ孔位置と応じた位置にネジ孔１６を有した平板部２６、２８とかしめ部２７、２９とからなり、平板部２６、２８の外形形状が互いに異なっている。 On the other hand, as shown in FIG. 4, in the terminal terminal 21 (FIG. 4A) fixed to the positive electrode wire 13 and the terminal terminal 22 fixed to the negative electrode wire 14 (FIG. 4A), In the same manner as the conventional terminal, the flat plate portions 26 and 28 having the screw holes 16 at positions corresponding to the screw hole positions of the connection portions 9 and 10 and the caulking portions 27 and 29 are provided. The 28 external shapes are different from each other.

即ち、このターミナル端子２１、２２の平板部２６、２８の互いの外形形状の相違と上記障害部２３ａ、２３ｂとを利用して、作業者が誤接続を直ぐに判るようにすることを目的としているもので、正極線接続部９や負極線接続部１０にその極性が相違する状態でターミナル端子２１や２２が配されかけた場合に、障害部２３ｂにターミナル端子２１が乗って、平板部２６が上平板１２ａに重ねられないように（図５（イ）参照）、また、障害部２３ａにターミナル端子２２が乗って、平板部２８が上平板１１ａに重ねられないようにしている。一対の正極線接続部９と負極線接続部１０に対して一対の正極線１３と負極線１４を繋ぐ場合の誤接続を防止するものであることから、一方でのネジ止め作業で誤接続が行なわれかけたことが作業員側に判断できればよいものであるが、この第一の例にあっては、ターミナル端子２１、２２のいずれでも誤接続が判断できるようにしている。 That is, an object is to make it possible for an operator to immediately recognize an erroneous connection by utilizing the difference in the external shape of the flat plate portions 26 and 28 of the terminal terminals 21 and 22 and the obstacle portions 23a and 23b. Therefore, when the terminal terminals 21 and 22 are arranged in the state where the polarities are different from each other in the positive electrode connection part 9 and the negative electrode connection part 10, the terminal terminal 21 gets on the obstacle part 23b and the flat plate part 26 becomes Further, the terminal terminal 22 is placed on the obstacle 23a so that the flat plate portion 28 is not overlapped with the upper flat plate 11a so as not to overlap the upper flat plate 12a (see FIG. 5A). This is to prevent erroneous connection when connecting the pair of positive electrode wires 13 and the negative electrode wire 14 to the pair of positive electrode wire connection portions 9 and the negative electrode wire connection portion 10. Although it is only necessary for the worker side to be able to determine what has been done, in this first example, it is possible to determine erroneous connection at either of the terminal terminals 21 and 22.

図４に示すように正極線１３に取り付けられるターミナル端子２１の平板部２６でのかしめ部２７とは反対の端部両側（外端両側）には、切り欠きからなる外形異形部分３０が設けられている。この切り欠きからなる対の外形異形部分３０は、ターミナル端子２１のネジ孔の位置を通る中心線を中心にして線対称となる位置であり、線対称となる切り欠き形状にしている。そして、正極線接続部９に、この正極線接続部９の極性と同じ極性となっている前記ターミナル端子２１を配置する際には、正極線接続部９での上記対の障害部２３ａが切り欠きの外形異形部分３０それぞれの位置に嵌まり込み、上平板１１ａにターミナル端子２１の平板部２６を重ね合わせることで、上平板１１ａのネジ孔１６の位置と平板部２６のネジ孔１６の位置とを合わせることができて、ネジ止めできるようにしている（図５（ア）参照）。 As shown in FIG. 4, a deformed outer shape portion 30 made of a notch is provided on both sides (outer end sides) opposite to the caulking portion 27 of the flat plate portion 26 of the terminal terminal 21 attached to the positive electrode wire 13. ing. The pair of externally deformed portions 30 formed of the notches are positions that are line symmetric with respect to the center line passing through the position of the screw hole of the terminal terminal 21, and have a notch shape that is line symmetric. When the terminal terminal 21 having the same polarity as the polarity of the positive line connecting part 9 is arranged in the positive line connecting part 9, the pair of obstacle parts 23a in the positive line connecting part 9 are cut off. The positions of the screw holes 16 in the upper plate 11a and the positions of the screw holes 16 in the flat plate portion 26 are obtained by fitting into the respective positions of the notched externally deformed portions 30 and superimposing the flat plate portions 26 of the terminal terminals 21 on the upper flat plate 11a. And can be screwed together (see FIG. 5A).

同様に負極線１４に取り付けられるターミナル端子２２の平板部２８でのかしめ部２９とは反対の端部中央に切り欠きからなる一つの外形異形部分３０が設けられ、ターミナル端子２２のネジ孔の位置を通る中心線上に位置しており、前記一つの外形異形部分３０自体の形状はネジ孔の位置を通る中心線に対して線対称としている。そして、負極線接続部１０に、この負極線接続部１０の極性と同じ極性となっている前記ターミナル端子２２を配置する際には、負極線接続部１０での上記一つの障害部２３ｂが前記一つの外形異形部分３０の位置に嵌まり込み、上平板１２ａにターミナル端子２２の平板部２８を重ね合わせることで、上平板１２ａのネジ孔１６の位置と平板部２８のネジ孔１６の位置とを合わせることができ、ネジ止めできるようにしている。 Similarly, one outer shape-deformed portion 30 made of a notch is provided at the center of the end opposite to the caulking portion 29 of the flat plate portion 28 of the terminal terminal 22 attached to the negative electrode wire 14, and the position of the screw hole of the terminal terminal 22 The shape of the one externally deformed portion 30 itself is axisymmetric with respect to the center line passing through the position of the screw hole. When the terminal terminal 22 having the same polarity as the polarity of the negative electrode line connecting part 10 is arranged in the negative electrode line connecting part 10, the one obstacle 23b in the negative electrode line connecting part 10 is The position of the screw hole 16 of the upper flat plate 12a and the position of the screw hole 16 of the flat plate portion 28 are obtained by fitting at the position of one externally deformed portion 30 and overlapping the flat plate portion 28 of the terminal terminal 22 on the upper flat plate 12a. And can be screwed together.

ターミナル端子２１とターミナル端子２２との両者の外形形状を比較して明らかなように、互いに対応する部分での外形異形部分３０の有無によってターミナル端子２１とターミナル端子２２との両者の外形形状が異なっている。そして、一方のターミナル端子である正極線１３に取り付けたターミナル端子２１の平板部２６のかしめ部２７とは反対の中央部分、即ち、前記ターミナル端子２１の対の外形異形部分３０の間であって、他方のターミナル端子である負極線１４に取り付けたターミナル端子２２の切り欠きからなる外形異形部分３０に対応する部分は、図示から明らかなように切り欠き非存在の平板３１として形成されてなるものである。 As apparent from the comparison of the external shapes of the terminal terminal 21 and the terminal terminal 22, the external shapes of the terminal terminal 21 and the terminal terminal 22 differ depending on the presence or absence of the externally deformed portion 30 in the corresponding portion. ing. And the center part opposite to the caulking part 27 of the flat plate part 26 of the terminal terminal 21 attached to the positive electrode wire 13 which is one terminal terminal, that is, between the externally deformed parts 30 of the pair of terminal terminals 21, The portion corresponding to the externally deformed portion 30 formed by the cutout of the terminal terminal 22 attached to the negative electrode wire 14 as the other terminal terminal is formed as a flat plate 31 having no cutout as apparent from the drawing. It is.

このように正極線１３に取り付けられているターミナル端子２１の平板部２６の外端中央は、切り欠きとはせずに平板３１とした部分がある。そして、図５（イ）に示されているように、正極のターミナル端子２１を負極線接続部１０に対応させようとする際には、その負極線接続部１０での上記障害部２３ｂに正極のターミナル端子２１の平板３１が乗るようにして当接することとなる。よって、負極線接続部１０の導電板１２の上平板１２ａに正極のターミナル端子２１の平板部２６が重ならず、誤った接続でのネジ止め作業を防止する。また、前記障害部２３ｂも導電板１２での立片２５で支えられているので倒れ込みせず、これによっても正極のターミナル端子２１の平板部２６の誤った重ね合わせをより一層確実に防止する。 In this way, the center of the outer end of the flat plate portion 26 of the terminal terminal 21 attached to the positive electrode wire 13 has a portion that is a flat plate 31 without being cut out. As shown in FIG. 5 (a), when the positive terminal 21 is to correspond to the negative line connecting part 10, the positive part is connected to the obstruction part 23b in the negative line connecting part 10. The flat plate 31 of the terminal terminal 21 comes into contact with the terminal terminal 21. Therefore, the flat plate portion 26 of the positive terminal 21 is not overlapped with the upper flat plate 12a of the conductive plate 12 of the negative electrode line connecting portion 10, thereby preventing the screwing operation in the wrong connection. Further, since the obstacle 23b is also supported by the standing piece 25 on the conductive plate 12, the obstacle 23b does not fall down, and this further prevents erroneous overlap of the flat plate portion 26 of the positive terminal 21.

同様に、他方のターミナル端子である負極線１４に取り付けたターミナル端子２２での平板３１の位置についても説明する。負極のターミナル端子２２の平板部２８のかしめ部２９とは反対の外端両側、即ち、平板部２８の外端中央の切り欠きからなる外形異形部分３０の両側であって、上記一方のターミナル端子である正極線１３に取り付けたターミナル端子２１の上記対の外形異形部分３０に対応する部分それぞれを、切り欠きとはしていない平板３１として設けている。前記対の平板３１は、正極のターミナル端子２１の対の切り欠きからなる外形異形部分３０に対応する位置であり、平板部２８の中心線を中心として線対称となる位置に設けられている。 Similarly, the position of the flat plate 31 at the terminal terminal 22 attached to the negative electrode wire 14 as the other terminal terminal will be described. One terminal terminal of the negative terminal terminal 22 on both sides of the outer end opposite to the caulking portion 29 of the flat plate portion 28, that is, on both sides of the externally deformed portion 30 consisting of a cutout at the center of the outer end of the flat plate portion 28. Each of the portions corresponding to the pair of externally deformed portions 30 of the terminal terminal 21 attached to the positive electrode wire 13 is provided as a flat plate 31 that is not cut out. The pair of flat plates 31 is a position corresponding to the externally deformed portion 30 formed of the pair of notches of the positive terminal 21, and is provided at a position that is symmetrical with respect to the center line of the flat plate portion 28.

そして、負極線１４に取り付けられているターミナル端子２２では、平板部２８の外端両側に平板３１があるので、負極のターミナル端子２２を、例えば正極線接続部９に対応させて接続しようとする際には、正極線接続部９での対の障害部２３ａにこの負極のターミナル端子２２の平板３１が乗るようにして当接することとなり、正極線接続部９の導電板１１の上平板１１ａに負極のターミナル端子２２の平板部２８が重ならず、誤った接続でのネジ止め作業を防止する。 In the terminal terminal 22 attached to the negative electrode wire 14, since the flat plate 31 is provided on both sides of the outer end of the flat plate portion 28, the negative terminal terminal 22 is to be connected in correspondence with the positive electrode connection portion 9, for example. At this time, the flat plate 31 of the terminal terminal 22 of the negative electrode is brought into contact with the pair of obstacle portions 23a in the positive electrode connection portion 9 so as to come into contact with the upper flat plate 11a of the conductive plate 11 of the positive electrode connection portion 9. The flat plate portion 28 of the terminal terminal 22 of the negative electrode does not overlap, and the screwing work with incorrect connection is prevented.

正極線接続部９の対の障害部２３ａに対応して平板部２６に二つの外形異形部分３０（切り欠き）を設けたターミナル端子２１と、負極線接続部１０の一つの障害部２３ｂに対応して平板部２８に一つの外形異形部分３０（切り欠き）を設けたターミナル端子２２とでは、互いに外形異形部分３０の位置、個数を異ならせて上記平板３１を形成している。このように正極のターミナル端子２１と負極のターミナル端子２２とは対応する同一箇所での切り欠き（外形異形部分３０）の有無によって外形形状を相違させているだけであるため、製造コストを上昇させず、そして誤接続も簡単に判るものとなっている。 Corresponding to the terminal terminal 21 provided with two externally deformed portions 30 (notches) in the flat plate portion 26 corresponding to the pair of obstacle portions 23a of the positive line connection portion 9 and one obstruction portion 23b of the negative line connection portion 10. Then, the flat plate 31 is formed by differentiating the position and number of the externally deformed portions 30 from the terminal terminal 22 provided with one externally deformed portion 30 (notch) in the flat plate portion 28. As described above, the positive terminal terminal 21 and the negative terminal terminal 22 are merely different in outer shape depending on the presence or absence of a corresponding cutout (outer shape deformed portion 30), which increases the manufacturing cost. In addition, misconnections are easily understood.

（第二の例）
図６から図８は第二の例を示している。上記第一の例では正極のターミナル端子２１と負極のターミナル端子２２とのいずれにも切り欠きからなる外形異形部分３０を設けているが、この第二の例は一方のターミナル端子にのみ切り欠きからなる外形異形部分を設けた構成である。図示しているように、本端子台装置４の正極線接続部９と負極線接続部１０ではそれぞれ導電板１１、１２の上平板１１ａ、１２ａの屈曲側中央に開口の回避部２４ａ、２４ｂが設けられている。前記上平板１１ａと１２ｂとは同一形状であり、導電板１１と１２とを同一形状としている。そして、正極線接続部９では前記上平板１１ａを通る障害部は設けられておらず、負極線接続部１０でのみ前記上平板１２ａの回避部２４ｂを通して上方に向けて突出する障害部２３ｂが設けられている。 (Second example)
6 to 8 show a second example. In the first example, the positive terminal terminal 21 and the negative terminal terminal 22 are each provided with an externally deformed portion 30 made of a notch. However, in this second example, only one terminal terminal is notched. It is the structure which provided the external shape deformed part which consists of. As shown in the drawing, in the positive line connecting part 9 and the negative line connecting part 10 of the terminal block device 4, there are opening avoiding parts 24a and 24b at the center of the bent side of the upper flat plates 11a and 12a of the conductive plates 11 and 12, respectively. Is provided. The upper flat plates 11a and 12b have the same shape, and the conductive plates 11 and 12 have the same shape. The positive line connecting portion 9 is not provided with an obstruction passing through the upper flat plate 11a, and only the negative line connecting portion 10 is provided with an obstructing portion 23b protruding upward through the avoiding portion 24b of the upper flat plate 12a. It has been.

図８（ア）に示すように上記正極線接続部９に対応する正極線１３に取り付けたターミナル端子２１は、平板部２６のかしめ部２７とは反対の外端を円弧形状にして外端の中央を平板３１としており、前記平板部２６は切り欠き（外形異形部分）を有しない外形形状としている。この正極のターミナル端子２１を正極線接続部９に配した状態では、上平板１１の回避部２４ａの一部分に平板部２６の外端部分がかかるように位置し、この状態でネジ止めできるようにしている（図６参照）。また、正極のターミナル端子２１を負極線接続部１０に配しようとした際には、負極線接続部１０の一つの障害部２３ｂにターミナル端子２１の平板３１が当接することとなり、誤接続の状態では正極のターミナル端子２１をネジ止めできないようになる。 As shown in FIG. 8A, the terminal terminal 21 attached to the positive electrode wire 13 corresponding to the positive electrode connection portion 9 has an outer end opposite to the caulking portion 27 of the flat plate portion 26 in an arc shape and has an outer end. A flat plate 31 is provided in the center, and the flat plate portion 26 has an outer shape not having a notch (outer shape irregular portion). In a state where the positive terminal 21 is arranged on the positive line connecting portion 9, the outer end portion of the flat plate portion 26 is located on a part of the avoidance portion 24 a of the upper flat plate 11, and can be screwed in this state. (See FIG. 6). Further, when trying to arrange the positive terminal 21 in the negative line connecting part 10, the flat plate 31 of the terminal terminal 21 comes into contact with one obstruction 23b of the negative line connecting part 10, and the erroneous connection state. Then, the positive terminal 21 cannot be screwed.

また、図８（イ）に示すように負極線接続部１０に対応する負極線１４に取り付けたターミナル端子２２は、平板部２８のかしめ部２９とは反対の外端中央（中心線上の位置）にして切り欠きからなる外形異形部分３０が設けられており、負極線接続部１０にターミナル端子２２を配した状態では障害部２３ｂが前記外形異形部分３０に嵌まって、適正にネジ止めできるようにしている（図６参照）。また、この負極のターミナル端子２２を極性の異なる正極線接続部９に対応させた場合、上述したように正極線接続部９に障害部が設けられていないので、誤接続の状態で接続することとなる。しかしながら、残りの正極のターミナル端子２１を負極線接続部１０側に配しなければならないこととなり、上述したように正極のターミナル端子２１が負極線接続部１０に、構造上、接続できないので、やはり誤接続であることが容易に判断できるものとなっている。 Further, as shown in FIG. 8 (a), the terminal terminal 22 attached to the negative electrode wire 14 corresponding to the negative electrode wire connecting portion 10 has an outer end center (position on the center line) opposite to the caulking portion 29 of the flat plate portion 28. The outer shape deformed portion 30 made of a notch is provided, and in the state where the terminal terminal 22 is arranged on the negative electrode wire connecting portion 10, the obstacle portion 23b fits into the outer shape deformed portion 30 and can be screwed properly. (See FIG. 6). In addition, when this negative terminal terminal 22 is made to correspond to the positive line connecting part 9 having a different polarity, the positive line connecting part 9 is not provided with an obstruction as described above, so that it is connected in an erroneous connection state. It becomes. However, the remaining positive terminal terminal 21 must be arranged on the negative electrode line connecting part 10 side, and as described above, the positive terminal terminal 21 cannot be connected to the negative electrode line connecting part 10 due to the structure. It can be easily determined that the connection is incorrect.

上述した第一の例においては、正極のターミナル端子２１と負極のターミナル端子２２との平板部２６、２８それぞれの外端に切り欠きからなる外形異形部分３０を設けているが、外形異形部分３０、即ち切り欠きを設ける領域は外端に限定されるものではない。例えば図９に示すようにターミナル端子２１、２２の平板部２６、２８における両側端に外形異形部分３０を設けるようにしてもよく、正極のターミナル端子２１の平板部２６の両側の外形異形部分３０と負極のターミナル端子２２の平板部２８の両側の外形異形部分３０との位置を異ならせて、それぞれ対応する箇所に平板３１を形成するようにしてもよい。勿論、この場合のターミナル端子２１、２２をネジ止めする正極線接続部９、負極線接続部１０の障害部２３ａ、２３ｂの位置も、接続部と極性が同じターミナル端子の前記外形異形部分の位置に対応するようにする。このように正極のターミナル端子２１と負極のターミナル端子２２との平板部２６、２８それぞれの平板部２６、２８に設ける外形異形部分３０の個数を同じとしても、その位置を互いに異ならせることで誤接続を簡単に防止できる。 In the first example described above, the outer shape deformed portion 30 made of a notch is provided at the outer ends of the flat plate portions 26 and 28 of the positive terminal terminal 21 and the negative terminal terminal 22, respectively. That is, the region where the cutout is provided is not limited to the outer end. For example, as shown in FIG. 9, externally deformed portions 30 may be provided on both side ends of the flat plate portions 26 and 28 of the terminal terminals 21 and 22, and externally deformed portions 30 on both sides of the flat plate portion 26 of the positive terminal terminal 21. It is also possible to form the flat plate 31 at a corresponding position by changing the positions of the outer shape deformed portions 30 on both sides of the flat plate portion 28 of the terminal terminal 22 of the negative electrode. Of course, in this case, the positions of the positive electrode line connecting portion 9 for screwing the terminal terminals 21 and 22 and the obstacle portions 23a and 23b of the negative electrode line connecting portion 10 are also the positions of the externally deformed portion of the terminal terminal having the same polarity as the connecting portion. To correspond to. As described above, even if the number of the externally deformed portions 30 provided on the flat plate portions 26 and 28 of the positive electrode terminal terminal 21 and the negative electrode terminal terminal 22 is the same, the error is caused by making the positions different from each other. Connection can be easily prevented.

第一の例及び第二の例において、図４と図８に示されているように正極のターミナル端子２１の平板部２６のかしめ部２７の近傍には、正極線接続部９を示す＋の表示３２が設けられているとともに、負極のターミナル端子２２の平板部２８のかしめ部２９の近傍には、負極線接続部１０を示す−の表示３３が設けられており、接続をする作業者が前記表示３２、３３を目視確認することでも、ターミナル端子２１、２２をその極性が不適合とならないように接続すべき箇所が正極線接続部９と負極線接続部１０のいずれであるかを判断し易くしている。これによって誤接続を防止する効果がより高められている。 In the first example and the second example, as shown in FIGS. 4 and 8, a positive line connecting portion 9 is shown in the vicinity of the caulking portion 27 of the flat plate portion 26 of the positive terminal 21. A display 32 is provided, and in the vicinity of the caulking portion 29 of the flat plate portion 28 of the negative terminal terminal 22, a − display 33 indicating the negative electrode line connecting portion 10 is provided, and an operator who performs the connection is provided. By visually checking the indications 32 and 33, it is determined whether the terminal terminals 21 and 22 should be connected so that the polarities of the terminals 21 and 22 are not incompatible with each other, the positive line connecting part 9 or the negative line connecting part 10. It is easy. This further enhances the effect of preventing erroneous connection.

上述したように本端子台装置４にあっては、直流側につながる並設された正極線接続部９と負極線接続部１０との他にこれに一列にして直線状に並ぶように、系統側へつながる交流接続部、及び自立運転時の交流接続部が配置されているものである。 As described above, in the terminal block device 4, in addition to the positive line connection part 9 and the negative line connection part 10 connected to the direct current side, the system is arranged in a line in a straight line. The AC connection part connected to the side and the AC connection part at the time of independent operation are arranged.

１…電気機器
４…端子台装置
５…台座部
６…正極入力部
７…負極入力部
８…ケーブル
９…正極線接続部
１０…負極線接続部
１１…正極側の導電板
１１ａ…上平板
１２…負極側の導電板
１２ａ…上平板
１３…正極線
１４…負極線
１６…ネジ孔
２１…正極線のターミナル端子
２２…負極線のターミナル端子
２３ａ、２３ｂ…障害部
２４ａ、２４ｂ…回避部
２５…立片
２６…ターミナル端子の平板部
２７…ターミナル端子のかしめ部
２８…ターミナル端子の平板部
２９…ターミナル端子のかしめ部
３０…外形異形部分
３１…平板
Ａ…変換機器として構成されている部分
Ｂ…接続部として構成されている部分 DESCRIPTION OF SYMBOLS 1 ... Electrical equipment 4 ... Terminal block apparatus 5 ... Base part 6 ... Positive electrode input part 7 ... Negative electrode input part 8 ... Cable 9 ... Positive electrode line connection part 10 ... Negative electrode line connection part 11 ... Positive electrode side conductive plate 11a ... Upper flat plate 12 ... negative electrode side conductive plate 12a ... upper flat plate 13 ... positive electrode wire 14 ... negative electrode wire 16 ... screw hole 21 ... positive electrode wire terminal terminal 22 ... negative electrode wire terminal terminal 23a, 23b ... obstruction part 24a, 24b ... avoidance part 25 ... Standing piece 26 ... Flat portion of terminal terminal 27 ... Caulking portion of terminal terminal 28 ... Flat portion of terminal terminal 29 ... Caulking portion of terminal terminal 30 ... Deformed outer shape portion 31 ... Flat plate A ... Portion configured as conversion device B ... Part configured as a connection

Claims

A positive electrode wire connection portion to which a ring-shaped positive electrode terminal terminal to which a positive electrode side of DC power is connected is screwed, and a negative electrode wire connection portion to which a ring-shaped negative electrode terminal terminal to which the negative electrode side of DC power is connected is screwed In a terminal block device comprising:
The positive electrode line connection part and the negative electrode line connection part are arranged side by side, and the positive electrode terminal connection is such that at least one of the positive terminal terminal and the negative terminal terminal corresponds to the other terminal terminal. A terminal block device comprising an obstacle portion that causes a problem when screwing to either the negative electrode portion or the negative electrode wire connecting portion.

2. The terminal block device according to claim 1, wherein the obstruction part is fitted into an outer shape deformed portion of the other terminal terminal of the positive terminal terminal and the negative terminal terminal.

The positive electrode line connecting portion and the negative electrode line connecting portion are each formed by overlapping a conductive plate on a pedestal portion which is an insulator, and the obstacle portion is a convex portion protruding a part of the pedestal portion. The terminal block device according to claim 1 or 2.

The terminal block device according to claim 3, wherein the conductive plate has a standing piece that reinforces the obstacle.

The positive terminal connected to the positive line connection has a display indicating the positive line connection, and the negative terminal connected to the negative line connection includes the negative line connection. The terminal block device according to claim 4, wherein the terminal block device has a display.

DC power obtained from renewable energy is connected to a positive electrode wire connection part to which a ring-shaped positive electrode terminal terminal supplied with positive DC power is screwed and a ring-shaped negative electrode terminal terminal supplied with negative DC power In an electrical device comprising the terminal block device that inputs via a terminal block device having a negative electrode line connection portion to be screwed,
It has a plurality of AC line connection parts that convert the DC power input from the terminal block device into AC power and output it to the system, the negative line connection part, the positive line connection part, and the plurality of AC line connections Are arranged in order and integrated, and at least one of the positive terminal terminal and the negative terminal terminal corresponds to the other terminal terminal, either the positive line connecting part or the negative line connecting part. An electric device comprising a terminal block device having an obstructing part that causes a problem when screwing to a cable.

The electric device according to claim 6, wherein the obstruction part includes a terminal block device according to claim 6 that fits into a deformed portion of the other terminal terminal of the positive terminal and the negative terminal.

The faulty part causes a problem when the ring-shaped terminal terminal connected to the system is connected to the positive electrode connecting part or the negative electrode connecting part, respectively connected to the plurality of AC line connecting parts. An electric device comprising the terminal block device according to claim 1.