JP6827221B2

JP6827221B2 - Switch and distribution board

Info

Publication number: JP6827221B2
Application number: JP2019212942A
Authority: JP
Inventors: 吉川　啓介; 啓介吉川; 洋一鶴田; 靖也宮田; 元昭佐藤; 中村　国法; 国法中村
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2014-12-26
Filing date: 2019-11-26
Publication date: 2021-02-10
Anticipated expiration: 2035-11-30
Also published as: JP6635371B2; JP6601766B2; JP6631909B2; JP2020107620A; JP6751918B2; JP2020024962A; JP2016127791A; JP6796810B2; JP2016127792A; JP6704181B2; JP2016127007A; JP2020024961A; JP2019216122A

Description

本発明は、開閉器及び分電盤に関する。 The present invention relates to switches and distribution boards.

従来、ケースの負荷側と電源側とに接地端子がそれぞれ設けられ、負荷側の接地端子と電源側の接地端子との間が電路を介して電気的に接続された分岐ブレーカが提案されている（例えば特許文献１参照）。電源側の接地端子が接地線を介して接地された状態で、負荷側の接地端子に接地分岐線が接続されると、接地分岐線が分岐ブレーカを介して接地されるように構成されている。 Conventionally, a branch breaker has been proposed in which ground terminals are provided on the load side and the power supply side of the case, respectively, and the ground terminal on the load side and the ground terminal on the power supply side are electrically connected via an electric circuit. (See, for example, Patent Document 1). When the grounding terminal on the power supply side is grounded via the grounding wire and the grounding branch wire is connected to the grounding terminal on the load side, the grounding branch wire is configured to be grounded via the branch breaker. ..

特開２００１−１６７１４号公報Japanese Unexamined Patent Publication No. 2001-16714

特許文献１に開示された分岐ブレーカでは、分岐ブレーカの長手方向の一端部に負荷に接続された接地線を電気的に接続するための端子が設けられ、他端部に接地端子と電気的に接続するための端子が設けられている。そのため、接地がなされているかどうかを確認するためには、分岐ブレーカの長手方向の両端部でそれぞれ接続状態を確認する必要がある。 In the branch breaker disclosed in Patent Document 1, a terminal for electrically connecting the ground wire connected to the load is provided at one end in the longitudinal direction of the branch breaker, and the other end is electrically connected to the ground terminal. A terminal for connecting is provided. Therefore, in order to confirm whether or not the grounding is performed, it is necessary to confirm the connection state at both ends of the branch breaker in the longitudinal direction.

本発明は上記課題に鑑みてなされ、接地の確認作業を容易にした開閉器及び分電盤を提供することを目的とする。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a switch and a distribution board that facilitates grounding confirmation work.

本発明の開閉器は、電源に電気的に接続される第１端子と、負荷に電気的に接続される第２端子と、前記負荷に電気的に接続された接地線が接続される第３端子と、前記第３端子と並んで配置され、前記第３端子に電気的に接続される第４端子とを備え、前記第４端子が接地されるように構成され、さらに、分電盤に設けられた接地端子に電気的に接続される接続端子と、前記第３端子及び前記第４端子と前記接続端子との間に電気的に接続されたスイッチとを備えることを特徴とする。 Switch of the present invention, first a first terminal electrically connected to a power source, a second terminal electrically connected to a load, is electrically connected to the ground line before Symbol load is connected A third terminal and a fourth terminal arranged side by side with the third terminal and electrically connected to the third terminal are provided, and the fourth terminal is configured to be grounded. Further, a distribution board It is characterized by including a connection terminal electrically connected to the ground terminal provided in the above, and a switch electrically connected between the third terminal and the fourth terminal and the connection terminal.

本発明の分電盤は、上記の開閉器と、前記開閉器を収納するキャビネットとを備えたことを特徴とする。
本発明の開閉器は、電源に電気的に接続される一対の第１端子と、負荷に電気的に接続される一対の第２端子と、前記負荷に電気的に接続された第１接地線が引き出される第１引出部と、前記第１接地線に電気的に接続される第２接地線が引き出される第２引出部とを備え、前記第１引出部と前記第２引出部とは、前記一対の第２端子の並び方向に沿って並んで配置され、前記第２接地線が接地されるように構成されたことを特徴とする。
本発明の分電盤は、電源に電気的に接続される一対の第１端子と、負荷に電気的に接続される一対の第２端子と、前記負荷に電気的に接続された第１接地線が引き出される第１引出部と、前記第１接地線に電気的に接続される第２接地線が引き出される第２引出部とを備えた開閉器と、前記開閉器を収納するキャビネットと、第１接地端子と、第２接地端子とを備え、前記第２接地線は、前記第１接地端子及び前記第２接地端子のうち自器の機能に応じた１の接地端子に接続されることを特徴とする。 The distribution board of the present invention is characterized by including the above-mentioned switch and a cabinet for accommodating the switch.
Switch of the present invention includes a pair of first terminals electrically connected to a power source, a pair of second terminals electrically connected to a load, a first ground electrically connected before Symbol load The first lead-out portion from which the wire is drawn out and the second lead-out portion from which the second ground wire electrically connected to the first ground wire is drawn out are provided, and the first lead-out portion and the second lead-out portion are , The pair of second terminals are arranged side by side along the arrangement direction, and the second ground wire is configured to be grounded.
Distribution board of the present invention includes a pair of first terminals electrically connected to a power source, a pair of second terminals electrically connected to a load, a first electrically connected before Symbol load A switch having a first lead-out portion from which the ground wire is pulled out, a second lead-out portion from which the second ground wire electrically connected to the first ground wire is drawn out, and a cabinet for accommodating the switch. , A first ground terminal and a second ground terminal are provided, and the second ground wire is connected to one of the first ground terminal and the second ground terminal according to the function of the own device. It is characterized by that.

本発明によれば、接地の確認作業を容易にした開閉器及び分電盤を提供することができる。 According to the present invention, it is possible to provide a switch and a distribution board that facilitate the grounding confirmation work.

実施形態の分電盤の正面図である。It is a front view of the distribution board of an embodiment. 実施形態の分岐開閉器の内部回路図である。It is an internal circuit diagram of the branch switch of an embodiment. 実施形態の分岐開閉器が取付部材に取り付けられた状態を幅方向から見た側面図である。It is a side view which looked at the state which the branch switch of embodiment was attached to the attachment member from the width direction. 実施形態の分岐開閉器を長さ方向から見た側面図である。It is a side view which looked at the branch switch of an embodiment from the length direction. 第４端子を第３端子と並列に設けた場合の漏電遮断器を収納する分電盤の正面図である。It is a front view of the distribution board which houses the earth leakage breaker when the 4th terminal is provided in parallel with 3rd terminal. 実施形態の分岐開閉器としての配線用遮断器と、漏電遮断器とにおける接地方法についての概略図である。It is the schematic about the grounding method in the molded case circuit breaker as a branch switch of embodiment, and the earth leakage breaker. 第４端子を第３端子と並列に設けた場合の漏電遮断器の内部回路図である。It is an internal circuit diagram of the earth leakage breaker when the 4th terminal is provided in parallel with the 3rd terminal. 第４端子を第３端子と並列に設けた場合の漏電遮断器を長さ方向から見た側面図である。It is a side view which saw from the length direction of the earth leakage breaker when the 4th terminal is provided in parallel with 3rd terminal. 漏電遮断器が分電盤に取り付けられた状態を幅方向（図８のＸ側）から見た側面図である。It is a side view which looked at the state which the earth leakage breaker was attached to the distribution board from the width direction (X side of FIG. 8). 漏電遮断器が分電盤に取り付けられた状態を幅方向（図８のＹ側）から見た側面図である。It is a side view which looked at the state which the earth leakage breaker was attached to the distribution board from the width direction (Y side of FIG. 8). 実施形態の分岐開閉器としての配線用遮断器と、漏電遮断器とにおける別の接地方法についての概略図である。It is the schematic about the other grounding method in the molded case circuit breaker as a branch switch of an embodiment, and the earth leakage breaker. 図１２Ａはスイッチがオフ状態である場合の接地方法についての概略図であり、図１２Ｂはスイッチがオン状態である場合の接地方法についての概略図である。FIG. 12A is a schematic diagram of a grounding method when the switch is in the off state, and FIG. 12B is a schematic diagram of a grounding method when the switch is in the on state.

本実施形態は、開閉器及び分電盤に関し、より詳細には、接地分岐線が接続される分岐開閉器及び分電盤に関する。 The present embodiment relates to a switch and a distribution board, and more particularly to a branch switch and a distribution board to which a grounded branch line is connected.

以下、本実施形態に係る開閉器及び分電盤について図面を参照して説明する。なお、本実施形態では、開閉器の一例として分岐開閉器について説明する。本実施形態の分電盤は、例えば工場やオフィスなどの建物に設置されて使用される。ただし、以下に説明する構成は本発明の一例に過ぎない。本発明は、以下の実施形態に限定されず、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 switch and the distribution board according to the present embodiment will be described with reference to the drawings. In this embodiment, a branch switch will be described as an example of the switch. The distribution board of the present embodiment is installed and used in a building such as a factory or an office. However, the configuration described below is only an example of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as the technical idea of the present invention is not deviated.

本実施形態の分電盤１は、図１に示すように、前面が開口した箱型のキャビネット１０を備えている。以下では、分電盤１が壁に取り付けられた状態での上下左右（図１における上下左右）を上下左右とし、壁に直交する方向（図１の紙面と直交する方向）を前後方向として説明するが、分電盤１を取り付ける向きは上記の向きに限定されない。 As shown in FIG. 1, the distribution board 1 of the present embodiment includes a box-shaped cabinet 10 having an open front surface. In the following, the vertical and horizontal directions (up and down, left and right in FIG. 1) when the distribution board 1 is attached to the wall will be referred to as vertical and horizontal, and the direction orthogonal to the wall (direction orthogonal to the paper surface in FIG. However, the direction in which the distribution board 1 is attached is not limited to the above direction.

キャビネット１０の内部には、内器として主幹開閉器２と複数の分岐開閉器３とが収納されている。複数の分岐開閉器３は、キャビネット１０の内部に配置された矩形板状の取付部材４に取り付けられている。キャビネット１０の側壁には、商用電源１００（電源）に接続される電源線２０１、電力を分配する分岐線２０２、接地分岐線２０３、接地線２０６などの配線を通すための貫通孔が設けられている。キャビネット１０の内部には、接地線２０６を接続するための接地端子１１が設けられている。キャビネット１０の前面の開口部には扉が開口部を塞ぐようにキャビネット１０に取り付けられている。 Inside the cabinet 10, a main switch 2 and a plurality of branch switches 3 are housed as internal units. The plurality of branch switches 3 are attached to a rectangular plate-shaped attachment member 4 arranged inside the cabinet 10. The side wall of the cabinet 10 is provided with a through hole for passing wiring such as a power supply line 201 connected to a commercial power supply 100 (power supply), a branch line 202 for distributing power, a ground branch line 203, and a ground line 206. There is. A ground terminal 11 for connecting the ground wire 206 is provided inside the cabinet 10. A door is attached to the opening of the front surface of the cabinet 10 so as to close the opening.

主幹開閉器２の一次側の端子２１には、商用電源１００からの単相三線式の電源線２０１が接続される。主幹開閉器２の二次側の端子２２には、電圧極（Ｌ１相、Ｌ２相）と中性極との３本の導電バー５が電気的に接続されている。３本の導電バー５（母線）の各々は、金属板にプレス加工を施すことによって帯板状に形成されており、主幹開閉器２を介して電源線２０１に電気的に接続されている。 A single-phase three-wire power line 201 from the commercial power source 100 is connected to the terminal 21 on the primary side of the main switch 2. Three conductive bars 5 having a voltage pole (L1 phase, L2 phase) and a neutral pole are electrically connected to the terminal 22 on the secondary side of the main switch 2. Each of the three conductive bars 5 (buses) is formed in a strip shape by pressing a metal plate, and is electrically connected to the power supply line 201 via the main switch 2.

取付部材４は、平面形状が矩形状の金属板であり、キャビネット１０の内部（例えば、底面）に例えばネジで固定されている。キャビネット１０の左右方向における中央部であって、取付部材４が設置されていない箇所には３本の導電バー５が取り付けられている。３本の導電バー５は、長手方向が上下方向と平行し、かつ前後方向において間隔をあけて並ぶように配置されている。取付部材４には、導電バー５に対して左右両側に、複数の分岐開閉器３が上下方向に並べて配置されるように、取り付けられている。なお、導電バー５の前面は、導電バー５の前方に配置される合成樹脂製のカバー６によって覆われている。 The mounting member 4 is a metal plate having a rectangular planar shape, and is fixed to the inside (for example, the bottom surface) of the cabinet 10 with screws, for example. Three conductive bars 5 are attached to the central portion of the cabinet 10 in the left-right direction in which the attachment member 4 is not installed. The three conductive bars 5 are arranged so that the longitudinal direction is parallel to the vertical direction and the three conductive bars 5 are arranged at intervals in the front-rear direction. A plurality of branch switches 3 are attached to the attachment member 4 so as to be arranged side by side in the vertical direction on both the left and right sides of the conductive bar 5. The front surface of the conductive bar 5 is covered with a synthetic resin cover 6 arranged in front of the conductive bar 5.

取付部材４には、接地線２０５の一端を接続するためのネジ端子４２が設けられている。接地線２０５の他端は接地端子１１に電気的に接続されており、接地端子１１は接地線２０６を介して接地されている。そのため、取付部材４は接地線２０５，２０６を介して接地されている。 The mounting member 4 is provided with a screw terminal 42 for connecting one end of the ground wire 205. The other end of the ground wire 205 is electrically connected to the ground terminal 11, and the ground terminal 11 is grounded via the ground wire 206. Therefore, the mounting member 4 is grounded via the ground wires 205 and 206.

また、取付部材４には、例えば取付部材４の一部を切り起こすことによって、側面視の形状がＬ型に形成された係止片４１が設けられている（図３参照）。取付部材４に分岐開閉器３が取り付けられると、係止片４１が分岐開閉器３の第４端子ｔ４に電気的に接続されることによって、第４端子ｔ４が取付部材４に電気的に接続される。 Further, the mounting member 4 is provided with a locking piece 41 having an L-shaped side view shape, for example, by cutting up a part of the mounting member 4 (see FIG. 3). When the branch switch 3 is attached to the mounting member 4, the locking piece 41 is electrically connected to the fourth terminal t4 of the branch switch 3, so that the fourth terminal t4 is electrically connected to the mounting member 4. Will be done.

次に、分岐開閉器３について図２〜図４を参照して説明する。 Next, the branch switch 3 will be described with reference to FIGS. 2 to 4.

まず、分岐開閉器３の電気的な構成を図２に基づいて説明する。分岐開閉器３は、２個の第１端子ｔ１と、２個の第２端子ｔ２と、第３端子ｔ３と、第４端子ｔ４と、２個の接点部３１と、短絡回路３２（接続回路）とを備えている。 First, the electrical configuration of the branch switch 3 will be described with reference to FIG. The branch switch 3 includes two first terminals t1, two second terminals t2, a third terminal t3, a fourth terminal t4, two contact portions 31, and a short circuit 32 (connection circuit). ) And.

２個の第１端子ｔ１の各々には導電バー５が接続される。分岐開閉器３が１００Ｖ用の場合、２個の第１端子ｔ１のうちの一方には電圧極（Ｌ１相又はＬ２相）の導電バー５が接続され、２個の第１端子ｔ１のうちの他方には中性極の導電バー５が接続される。分岐開閉器３が２００Ｖ用の場合、２個の第１端子ｔ１のうちの一方にはＬ１相の導電バー５が接続され、２個の第１端子ｔ１のうちの他方にはＬ２相の導電バー５が接続される。 A conductive bar 5 is connected to each of the two first terminals t1. When the branch switch 3 is for 100V, the conductive bar 5 of the voltage electrode (L1 phase or L2 phase) is connected to one of the two first terminals t1 and of the two first terminals t1. The conductive bar 5 of the neutral pole is connected to the other. When the branch switch 3 is for 200 V, the L1 phase conductive bar 5 is connected to one of the two first terminals t1, and the L2 phase conductive bar 5 is connected to the other of the two first terminals t1. The bar 5 is connected.

２個の第２端子ｔ２の各々には、負荷（例えば接地極付きのコンセントなど）が接続される分岐線２０２が接続される。 A branch line 202 to which a load (for example, an outlet with a grounding electrode) is connected is connected to each of the two second terminals t2.

２個の接点部３１の各々は、対応する第１端子ｔ１と第２端子ｔ２との間に電気的に接続されている。２個の接点部３１は、ハンドル３３（図３参照）の操作に応じて、オン状態及びオフ状態の何れかに切り替えられる。また分岐開閉器３は、分岐線２０２に流れる負荷電流が、あらかじめ設定されたしきい値を超えると、接点部３１を強制的に開極させる過電流保護機能を備えてもよい。 Each of the two contact portions 31 is electrically connected between the corresponding first terminal t1 and the second terminal t2. The two contact portions 31 are switched to either an on state or an off state according to the operation of the handle 33 (see FIG. 3). Further, the branch switch 3 may have an overcurrent protection function for forcibly opening the contact portion 31 when the load current flowing through the branch line 202 exceeds a preset threshold value.

第３端子ｔ３には、負荷の接地極に電気的に接続された接地分岐線２０３が接続される。第３端子ｔ３は、接地分岐線２０３が接続される接地分岐線端子となる。ここにおいて、分岐開閉器３には負荷として例えば接地極付きのコンセントが接続されており、コンセントの接地極に電気的に接続された接地分岐線２０３が第３端子ｔ３に接続される。 A ground branch line 203 electrically connected to the ground electrode of the load is connected to the third terminal t3. The third terminal t3 is a ground branch line terminal to which the ground branch line 203 is connected. Here, for example, an outlet with a grounding electrode is connected to the branch switch 3 as a load, and a grounding branch line 203 electrically connected to the grounding electrode of the outlet is connected to the third terminal t3.

第４端子ｔ４は、金属製の取付部材４に電気的に接続され、取付部材４を介して接地端子１１と電気的に接続される。 The fourth terminal t4 is electrically connected to the metal mounting member 4, and is electrically connected to the ground terminal 11 via the mounting member 4.

短絡回路３２は、第３端子ｔ３と第４端子ｔ４との間を電気的に短絡（接続）する。 The short-circuit circuit 32 electrically short-circuits (connects) between the third terminal t3 and the fourth terminal t4.

分岐開閉器３は、第１端子ｔ１、第２端子ｔ２、第３端子ｔ３、第４端子ｔ４、接点部３１、及び短絡回路３２を収納（保持）するケース３０をさらに備えている。 The branch switch 3 further includes a case 30 for accommodating (holding) a first terminal t1, a second terminal t2, a third terminal t3, a fourth terminal t4, a contact portion 31, and a short circuit 32.

ケース３０は合成樹脂の成型品であり、直方体状に形成されている。ケース３０は、図１の左右方向、前後方向、上下方向の順番で寸法が小さくなっている。なお、ケース３０において、図１の左右方向を長手方向と、前後方向を高さ方向と、上下方向を短手（幅）方向と、それぞれ称する。 The case 30 is a molded product of synthetic resin and is formed in a rectangular parallelepiped shape. The case 30 has smaller dimensions in the order of the left-right direction, the front-back direction, and the up-down direction in FIG. In the case 30, the left-right direction of FIG. 1 is referred to as a longitudinal direction, the front-back direction is referred to as a height direction, and the up-down direction is referred to as a short (width) direction.

次に、分岐開閉器３の機械的な構成を図３及び図４に基づいて説明する。図３は、分岐開閉器３が取付部材４に取り付けられた状態を短手（幅）方向から見た側面図である。図４は、分岐開閉器３を長手方向から見た側面図である。 Next, the mechanical configuration of the branch switch 3 will be described with reference to FIGS. 3 and 4. FIG. 3 is a side view of the state in which the branch switch 3 is attached to the attachment member 4 as viewed from the side (width) direction. FIG. 4 is a side view of the branch switch 3 as viewed from the longitudinal direction.

ケース３０の長手方向の一端部（図３の左）に、３本の導電バー５のうち対応する導電バー５がそれぞれ挿入される３個のスリット３５が設けられている。３個のスリット３５のうちの２個（図１における前方の２個）には、スリット３５に挿入される導電バー５を厚み方向の両端から挟むように接触する刃受け部材３６が配置されている。刃受け部材３６は弾性及び導電性を有する金属材料で形成されており、この刃受け部材３６で第１端子ｔ１が構成されている。スリット３５に挿入された導電バー５が刃受け部材３６に接触されることによって、第１端子ｔ１に導電バー５が電気的に接続される。 At one end of the case 30 in the longitudinal direction (left in FIG. 3), three slits 35 into which the corresponding conductive bars 5 of the three conductive bars 5 are inserted are provided. Two of the three slits 35 (the front two in FIG. 1) are provided with blade receiving members 36 that come into contact with each other so as to sandwich the conductive bars 5 inserted into the slits 35 from both ends in the thickness direction. There is. The blade receiving member 36 is made of a metal material having elasticity and conductivity, and the blade receiving member 36 constitutes the first terminal t1. When the conductive bar 5 inserted into the slit 35 comes into contact with the blade receiving member 36, the conductive bar 5 is electrically connected to the first terminal t1.

ケース３０の長手方向の他端部（図３の右）に、第２端子ｔ２となる速結端子７０と、第３端子ｔ３となる速結端子８０とが、高さ方向に２段に並ぶように設けられている（図３参照）。本実施形態では、速結端子７０が図３の上方、速結端子８０が図３の下方に位置するようにケース３０に収納されている。本実施形態の分岐開閉器３は、速結端子７０及び速結端子８０を２個ずつ備えている。２個の速結端子８０のうち一方の速結端子８０に接地分岐線２０３が接続される。２個の速結端子７０はケース３０の幅方向に並ぶように配置され、２個の速結端子８０もケース３０の幅方向に並ぶように配置されている。ケース３０の長手方向の他端部から見た側面には、２個の速結端子７０の各々に対応する位置に２個の貫通孔３７が設けられ、２個の速結端子８０の各々に対応する位置に２個の貫通孔３８が設けられている（図３、図４参照）。 At the other end of the case 30 in the longitudinal direction (right in FIG. 3), the fast-connecting terminal 70 serving as the second terminal t2 and the fast-connecting terminal 80 serving as the third terminal t3 are arranged in two stages in the height direction. (See FIG. 3). In the present embodiment, the quick-connect terminal 70 is housed in the case 30 so as to be located above FIG. 3 and the quick-connect terminal 80 is located below FIG. The branch switch 3 of the present embodiment includes two quick-connect terminals 70 and two quick-connect terminals 80. The ground branch line 203 is connected to one of the two quick-connect terminals 80. The two quick-connect terminals 70 are arranged so as to be arranged in the width direction of the case 30, and the two quick-connect terminals 80 are also arranged so as to be arranged in the width direction of the case 30. Two through holes 37 are provided at positions corresponding to each of the two quick-connect terminals 70 on the side surface of the case 30 as viewed from the other end in the longitudinal direction, and each of the two quick-connect terminals 80 is provided with two through holes 37. Two through holes 38 are provided at corresponding positions (see FIGS. 3 and 4).

ケース３０の内部には、短絡回路３２を構成する導電板３２０が収納されている。導電板３２０は、帯板状の金属板の両端を略直角に折り曲げられた形状に形成されている。導電板３２０は、ケース３０の底壁に中央部分を沿わせるようにして、ケース３０の内部に収納されている。導電板３２０の長手方向における他端部（図３の右）には、第３端子ｔ３に接続される端子片３２１が設けられている。導電板３２０の長手方向における一端部（図３の左）には、取付部材４の係止片４１に電気的に接続される端子片３２２が設けられている。端子片３２２は、ケース３０の下面に設けられた開口３４に臨む位置に配置されている。ケース３０が取付部材４に取り付けられると、取付部材４の係止片４１が開口３４を通してケース３０内に挿入され、係止片４１が端子片３２２と接触することによって、導電板３２０と取付部材４とが電気的に接続される。ここにおいて、端子片３２２で第４端子ｔ４が構成される。この場合、導電板３２０は、ケース３０の後面側に設けられている（収納されている）こととなる。 The conductive plate 320 constituting the short-circuit circuit 32 is housed inside the case 30. The conductive plate 320 is formed in a shape in which both ends of a strip-shaped metal plate are bent at substantially right angles. The conductive plate 320 is housed inside the case 30 so that the central portion thereof is aligned with the bottom wall of the case 30. A terminal piece 321 connected to the third terminal t3 is provided at the other end (right in FIG. 3) of the conductive plate 320 in the longitudinal direction. A terminal piece 322 electrically connected to the locking piece 41 of the mounting member 4 is provided at one end (left in FIG. 3) of the conductive plate 320 in the longitudinal direction. The terminal piece 322 is arranged at a position facing the opening 34 provided on the lower surface of the case 30. When the case 30 is attached to the mounting member 4, the locking piece 41 of the mounting member 4 is inserted into the case 30 through the opening 34, and the locking piece 41 comes into contact with the terminal piece 322, whereby the conductive plate 320 and the mounting member 4 is electrically connected. Here, the terminal piece 322 constitutes the fourth terminal t4. In this case, the conductive plate 320 is provided (stored) on the rear surface side of the case 30.

速結端子７０は、端子板７１と、鎖錠バネ７２と、解除レバー７３とを備える。 The quick-connect terminal 70 includes a terminal plate 71, a lock spring 72, and a release lever 73.

端子板７１は、接点部３１に電気的に接続されている。端子板７１は、貫通孔３７からケース３０の内部に挿入される電線（分岐線２０２）と対向する位置に配置されている。 The terminal plate 71 is electrically connected to the contact portion 31. The terminal plate 71 is arranged at a position facing the electric wire (branch wire 202) inserted into the case 30 from the through hole 37.

鎖錠バネ７２は、帯板状の板バネの長手方向における両端部が曲げられた形状に形成されている。鎖錠バネ７２は、中央部分の長手方向における一端部に設けられた鎖錠片７４と、中央部分の長手方向における他端部に設けられた押圧片７５とを備えている。鎖錠片７４は、鎖錠バネ７２の中央部分の一端部がＪ字形に形成されている。押圧片７５は、鎖錠バネ７２の中央部分の他端部がＳ字形に形成されている。鎖錠バネ７２は、鎖錠片７４及び押圧片７５を端子板７１に対向させるようにしてケース３０の内部に収納されている。 The lock spring 72 is formed in a shape in which both ends of the strip-shaped leaf spring in the longitudinal direction are bent. The lock spring 72 includes a lock piece 74 provided at one end in the longitudinal direction of the central portion and a pressing piece 75 provided at the other end in the longitudinal direction of the central portion. In the lock piece 74, one end of the central portion of the lock spring 72 is formed in a J shape. The other end of the central portion of the lock spring 72 of the pressing piece 75 is formed in an S shape. The lock spring 72 is housed inside the case 30 so that the lock piece 74 and the pressing piece 75 face each other with the terminal plate 71.

鎖錠片７４と貫通孔３７との間の距離が押圧片７５と貫通孔３７との間の距離より小さい。貫通孔３７からケース３０の内部に電線が挿入されると、この電線に鎖錠片７４の先端が食い込み、速結端子７０から電線を取り外しできない状態となる。貫通孔３７からケース３０の内部に挿入された電線が端子板７１と押圧片７５との間に挿入されると、押圧片７５の弾性力によって電線が端子板７１に押し付けられ、電線と端子板７１とが電気的に接続される。 The distance between the lock piece 74 and the through hole 37 is smaller than the distance between the pressing piece 75 and the through hole 37. When the electric wire is inserted into the case 30 from the through hole 37, the tip of the lock piece 74 bites into the electric wire, and the electric wire cannot be removed from the quick connection terminal 70. When the electric wire inserted into the case 30 from the through hole 37 is inserted between the terminal plate 71 and the pressing piece 75, the electric wire is pressed against the terminal plate 71 by the elastic force of the pressing piece 75, and the electric wire and the terminal plate are pressed. 71 is electrically connected.

解除レバー７３は、ケース３０に支持された軸７６を中心として回転自在にケース３０に取り付けられている。解除レバー７３には、ケース３０の開口３９から露出する部位に操作突起７７が設けられている。解除レバー７３には、解除レバー７３が回転させられることによって、端子板７１から離れる向きに鎖錠片７４を押す突起７８が設けられている。鎖錠バネ７２と端子板７１との間に電線が挿入されている状態で、操作突起７７を操作して解除レバー７３を図３中の時計回りに回転させると、突起７８によって鎖錠片７４が端子板７１から離れる向きにたわめられる。鎖錠片７４が端子板７１から離れる向きにたわめられると、鎖錠片７４の先端が電線から離れるので、電線の抜け止め状態が解除され、電線の取り外しが可能になる。操作突起７７を操作する力がなくなると、鎖錠片７４の弾性復帰力によって突起７８が押され、解除レバー７３が操作前の位置まで移動した状態となる。 The release lever 73 is rotatably attached to the case 30 about a shaft 76 supported by the case 30. The release lever 73 is provided with an operation protrusion 77 at a portion exposed from the opening 39 of the case 30. The release lever 73 is provided with a protrusion 78 that pushes the lock piece 74 in a direction away from the terminal plate 71 by rotating the release lever 73. With the electric wire inserted between the lock spring 72 and the terminal plate 71, when the operation protrusion 77 is operated to rotate the release lever 73 clockwise in FIG. 3, the lock piece 74 is formed by the protrusion 78. Is flexed away from the terminal plate 71. When the lock piece 74 is bent away from the terminal plate 71, the tip of the lock piece 74 is separated from the electric wire, so that the electric wire is released from the disconnection state and the electric wire can be removed. When the force for operating the operation protrusion 77 is lost, the protrusion 78 is pushed by the elastic return force of the lock piece 74, and the release lever 73 is moved to the position before the operation.

速結端子８０は、端子板８１と、鎖錠バネ８２と、解除部材８３とを備える。 The quick-connect terminal 80 includes a terminal plate 81, a lock spring 82, and a release member 83.

端子板８１は、貫通孔３８からケース３０の内部に挿入される電線（接地分岐線２０３）と対向する位置に配置されている。端子板８１には、溶接、ロウ付け、かしめ固定などの適宜の方法で、導電板３２０の端子片３２１が固定されており、端子板８１と導電板３２０とが電気的に接続されている。 The terminal plate 81 is arranged at a position facing the electric wire (ground branch line 203) inserted into the case 30 from the through hole 38. The terminal piece 321 of the conductive plate 320 is fixed to the terminal plate 81 by an appropriate method such as welding, brazing, or caulking, and the terminal plate 81 and the conductive plate 320 are electrically connected to each other.

鎖錠バネ８２は、帯板状の板バネの長手方向における両端部が曲げられた形状に形成されている。鎖錠バネ８２は、中央部分の長手方向における一端部に設けられた鎖錠片８４と、中央部分の長手方向における他端部に設けられた押圧片８５とを備えている。鎖錠片８４は、鎖錠バネ８２の中央部分の一端部がＪ字形に形成されている。押圧片８５は、鎖錠バネ８２の中央部分の他端部がＳ字形に形成されている。鎖錠バネ８２は、鎖錠片８４及び押圧片８５を端子板８１に対向させるようにしてケース３０の内部に収納されている。 The lock spring 82 is formed in a shape in which both ends of the strip-shaped leaf spring in the longitudinal direction are bent. The lock spring 82 includes a lock piece 84 provided at one end in the longitudinal direction of the central portion, and a pressing piece 85 provided at the other end in the longitudinal direction of the central portion. In the lock piece 84, one end of the central portion of the lock spring 82 is formed in a J shape. The other end of the central portion of the locking spring 82 of the pressing piece 85 is formed in an S shape. The lock spring 82 is housed inside the case 30 so that the lock piece 84 and the pressing piece 85 face each other with the terminal plate 81.

鎖錠片８４と貫通孔３８との間の距離が押圧片８５と貫通孔３８との間の距離より小さい。貫通孔３８からケース３０の内部に電線（接地分岐線２０３）が挿入されると、この電線に鎖錠片８４の先端が食い込み、速結端子８０から電線を取り外しできない状態となる。貫通孔３８からケース３０の内部に挿入された電線が端子板８１と押圧片８５との間に挿入されると、押圧片８５の弾性力によって電線が端子板８１に押し付けられ、電線と端子板８１とが電気的に接続される。このように、電線を差し込むだけで電気的接続と機械的接続とが完了するような端子を速結型の端子という。 The distance between the lock piece 84 and the through hole 38 is smaller than the distance between the pressing piece 85 and the through hole 38. When an electric wire (ground branch wire 203) is inserted into the case 30 from the through hole 38, the tip of the lock piece 84 bites into the electric wire, and the electric wire cannot be removed from the quick connection terminal 80. When the electric wire inserted into the case 30 from the through hole 38 is inserted between the terminal plate 81 and the pressing piece 85, the electric wire is pressed against the terminal plate 81 by the elastic force of the pressing piece 85, and the electric wire and the terminal plate The 81 is electrically connected. A terminal in which an electrical connection and a mechanical connection are completed simply by inserting an electric wire in this way is called a quick connection type terminal.

解除部材８３は、ケース３０の長手方向の他端部（図３における右）に設けられた保持孔に、進退自在に配置されている。解除部材８３の操作部８６はケース３０の表面から外側に露出している。解除部材８３には、操作部８６が押されることによって、端子板８１から離れる向きに鎖錠片８４を押す突起８７が設けられている。鎖錠バネ８２と端子板８１との間に電線が挿入されている状態で、操作部８６を押すと、突起８７によって鎖錠片８４が端子板８１から離れる向きにたわめられる。鎖錠片８４が端子板８１から離れる向きにたわめられると、鎖錠片８４の先端が電線から離れるので、電線の抜け止め状態が解除され、電線の取り外しが可能になる。操作部８６を押す力がなくなると、鎖錠片８４の弾性復帰力によって突起８７が押され、ケース３０の表面から操作部８６が突出した状態となる。 The release member 83 is arranged so as to be able to advance and retreat in a holding hole provided at the other end of the case 30 in the longitudinal direction (right in FIG. 3). The operation portion 86 of the release member 83 is exposed to the outside from the surface of the case 30. The release member 83 is provided with a protrusion 87 that pushes the lock piece 84 in a direction away from the terminal plate 81 when the operation unit 86 is pushed. When the operation unit 86 is pushed while the electric wire is inserted between the lock spring 82 and the terminal plate 81, the lock piece 84 is bent in the direction away from the terminal plate 81 by the protrusion 87. When the lock piece 84 is bent in a direction away from the terminal plate 81, the tip of the lock piece 84 is separated from the electric wire, so that the electric wire is released from the retaining state and the electric wire can be removed. When the force for pushing the operation unit 86 is lost, the protrusion 87 is pushed by the elastic recovery force of the lock piece 84, and the operation unit 86 protrudes from the surface of the case 30.

本実施形態の分岐開閉器３は、スリット３５に導電バー５を差し込むようにして取付部材４に取り付けられる。このようにして分岐開閉器３が取付部材４に取り付けられると、係止片４１が分岐開閉器３の端子片３２２に引っ掛かった状態となり、この状態でケース３０の右方向の端部を取付部材４に固定すると、分岐開閉器３が取付部材４に固定される。また、分岐開閉器３が取付部材４に取り付けられた状態では、係止片４１が端子片３２２（第４端子ｔ４）に接触することで、取付部材４と導電板３２０とが電気的に接続される。取付部材４は、接地線２０５を介してキャビネット１０の接地端子１１に電気的に接続されているので、分岐開閉器３の第３端子ｔ３（速結端子８０）が取付部材４を介して接地端子１１に電気的に接続されることになる。そして、分岐開閉器３の速結端子８０に、分岐回路からの接地分岐線２０３が接続されると、この接地分岐線２０３が取付部材４を介して接地端子１１に電気的に接続されて、接地分岐線２０３が接地されることになる。本実施形態の分岐開閉器３では、接地分岐線２０３が接続される第３端子ｔ３を速結端子８０で構成しているので、接地分岐線２０３を接続する作業を簡単にできる。ここにおいて、本実施形態の分電盤１では、取付部材４が、複数本の接地分岐線２０３をまとめて接地端子１１に電気的に接続する集中接地端子の機能を果たしており、取付部材４とは別に集中接地端子を備える必要が無いという利点がある。 The branch switch 3 of the present embodiment is attached to the attachment member 4 by inserting the conductive bar 5 into the slit 35. When the branch switch 3 is attached to the attachment member 4 in this way, the locking piece 41 is in a state of being caught by the terminal piece 322 of the branch switch 3, and in this state, the right end of the case 30 is attached to the attachment member. When fixed to 4, the branch switch 3 is fixed to the mounting member 4. Further, in the state where the branch switch 3 is attached to the attachment member 4, the locking piece 41 comes into contact with the terminal piece 322 (fourth terminal t4), so that the attachment member 4 and the conductive plate 320 are electrically connected. Will be done. Since the mounting member 4 is electrically connected to the grounding terminal 11 of the cabinet 10 via the grounding wire 205, the third terminal t3 (quick connection terminal 80) of the branch switch 3 is grounded via the mounting member 4. It will be electrically connected to the terminal 11. Then, when the grounding branch line 203 from the branch circuit is connected to the quick connection terminal 80 of the branch switch 3, the grounding branch line 203 is electrically connected to the grounding terminal 11 via the mounting member 4. The ground branch line 203 will be grounded. In the branch switch 3 of the present embodiment, since the third terminal t3 to which the ground branch line 203 is connected is composed of the quick connection terminal 80, the work of connecting the ground branch line 203 can be simplified. Here, in the distribution board 1 of the present embodiment, the mounting member 4 functions as a centralized grounding terminal for electrically connecting a plurality of grounding branch lines 203 to the grounding terminal 11 together with the mounting member 4. Has the advantage that it is not necessary to separately provide a centralized ground terminal.

本実施形態では、速結端子７０が備える解除レバー７３を図３中の時計回りに回転させることで、電線（分岐線２０２）の抜け止めの解除をさせ、速結端子８０が備える解除部材８３を押すことで、電線（接地分岐線２０３）の抜け止めを解除させる構成とした。しかしながら、この構成に限定されない。速結端子７０において解除部材８３を用いた抜け止めの解除を行ってもよいし、速結端子８０において解除レバー７３を用いた抜け止めの解除を行ってもよい。または、双方とも解除レバー７３を用いた抜け止めの解除を行ってもよいし、解除部材８３を用いて抜け止めの解除を行ってもよい。 In the present embodiment, the release lever 73 included in the quick-connect terminal 70 is rotated clockwise in FIG. 3 to release the disconnection prevention of the electric wire (branch wire 202), and the release member 83 included in the quick-connect terminal 80 is released. By pressing, the wire (ground branch wire 203) is released from being pulled out. However, it is not limited to this configuration. The quick-connect terminal 70 may be released from the retaining member 83 using the release member 83, or the quick-connect terminal 80 may be released from the retaining lever 73 using the release lever 73. Alternatively, both may use the release lever 73 to release the retainer, or the release member 83 may be used to release the retainer.

本実施形態において、開閉器の一例として分岐開閉器を用いたが、これに限定されない。 In the present embodiment, a branch switch is used as an example of the switch, but the present invention is not limited to this.

本実施形態の開閉器は、電気が流れていないときに、スイッチの開閉を行う機能（断路機能）を少なくとも有していればよい。例えば、開閉器は、遮断器、遮断機能を有していないスイッチ又は断路器である。 The switch of the present embodiment may have at least a function of opening and closing the switch (disconnecting function) when electricity is not flowing. For example, a switch is a circuit breaker, a switch or a disconnector that does not have a circuit breaker function.

例えば、本実施形態の開閉器は、漏電遮断器（ＥＬＢ：ＥａｒｔｈＬｅａｋａｇｅｃｉｒｃｕｉｔＢｒｅａｋｅｒ）及び配線用遮断器（ＭＣＢ：ＭｏｌｄｅｄＣａｓｅＣｉｒｃｕｉｔＢｒｅａｋｅｒ）に適用することができる。 For example, the switch of the present embodiment can be applied to an earth leakage breaker (ELB: Earth Leakage circuit breaker) and a molded case circuit breaker (MCB: Molded Case Circuit Breaker).

本実施形態では、第２端子ｔ２として速結端子７０を、第３端子ｔ３として速結端子８０を用いたが、これに限定されない。第２端子ｔ２としてねじ端子を用いてもよいし、第３端子ｔ３についても同様にねじ端子を用いてもよい。 In the present embodiment, the quick-connect terminal 70 is used as the second terminal t2, and the quick-connect terminal 80 is used as the third terminal t3, but the present invention is not limited thereto. A screw terminal may be used as the second terminal t2, and a screw terminal may be used for the third terminal t3 as well.

本実施形態において、３個のスリット３５のうち図１における前方２個のスリット３５に、刃受け部材３６が配置される構成としたが、この構成に限定されない。刃受け部材３６は、３個のスリット３５のうち２個のスリット３５に設けられていればよい。つまり、３個のスリット３５に挿入される導電バー５の挿入順序は図３に示す順序に固定されない。導電バー５の挿入順序に応じて、刃受け部材３６が設けられていればよい。 In the present embodiment, the blade receiving member 36 is arranged in the two front slits 35 in FIG. 1 out of the three slits 35, but the configuration is not limited to this. The blade receiving member 36 may be provided in two of the three slits 35. That is, the insertion order of the conductive bars 5 inserted into the three slits 35 is not fixed to the order shown in FIG. The blade receiving member 36 may be provided according to the insertion order of the conductive bars 5.

（変形例）
本実施形態では、２個の速結端子８０のうち一方の端子を第３端子ｔ３として、他方の端子を予備端子としたが、これに限定されない。予備端子を第４端子ｔ４として用いてもよい（図５参照）。 (Modification example)
In the present embodiment, one of the two quick-connect terminals 80 is used as the third terminal t3 and the other terminal is used as the spare terminal, but the present invention is not limited to this. The spare terminal may be used as the fourth terminal t4 (see FIG. 5).

この場合における開閉器について、図５〜図１０を参照して説明する。図７は、図６のＥＬＢ３ａについて幅方向のＸ側から見た側面図であり、図８は、図６のＥＬＢ３ａについて幅方向のＹ側から見た側面図である。なお、ここでは、分電盤１には、上述した配線用遮断器（ＭＣＢ）としての分岐開閉器３と、本変形例における漏電遮断器（ＥＬＢ）３ａとが混在して収納されているとする（図６参照）。以下の説明において、配線用遮断器（ＭＣＢ）に符号“３”を付す。また、ＭＣＢ３とＥＬＢ３ａとで符号の重複を防ぐため、構成要素が重複する場合には、ＥＬＢ３ａの構成要素には符号の末尾に“ａ”を付す。 The switch in this case will be described with reference to FIGS. 5 to 10. FIG. 7 is a side view of ELB3a of FIG. 6 as viewed from the X side in the width direction, and FIG. 8 is a side view of ELB3a of FIG. 6 as viewed from the Y side in the width direction. Here, it is said that the distribution board 1 contains the branch switch 3 as the wiring breaker (MCB) described above and the earth leakage breaker (ELB) 3a in the present modification in a mixed manner. (See FIG. 6). In the following description, the molded case circuit breaker (MCB) is designated by the reference numeral "3". Further, in order to prevent duplication of the code between MCB3 and ELB3a, when the components overlap, "a" is added to the end of the code to the component of ELB3a.

ＥＬＢ３ａの電気的な構成を図７に基づいて説明する。ＥＬＢ３ａは、２個の第１端子ｔ１ａと、２個の第２端子ｔ２ａと、第３端子ｔ３ａと、第４端子ｔ４ａと、２個の接点部３１ａと、短絡回路３２ａ（接続回路）とを備えている。 The electrical configuration of ELB3a will be described with reference to FIG. The ELB3a includes two first terminals t1a, two second terminals t2a, a third terminal t3a, a fourth terminal t4a, two contact portions 31a, and a short circuit 32a (connection circuit). I have.

２個の第１端子ｔ１ａの各々には導電バー５が接続される。２個の第２端子ｔ２ａの各々には、負荷（例えば接地極付きのコンセントなど）が接続される分岐線２０２が接続される。２個の接点部３１ａの各々は、対応する第１端子ｔ１ａと第２端子ｔ２ａとの間に電気的に接続されている。２個の接点部３１ａは、ハンドル３３ａの操作に応じて、オン状態及びオフ状態の何れかに切り替えられる。 A conductive bar 5 is connected to each of the two first terminals t1a. A branch line 202 to which a load (for example, an outlet with a grounding electrode) is connected is connected to each of the two second terminals t2a. Each of the two contact portions 31a is electrically connected between the corresponding first terminal t1a and the second terminal t2a. The two contact portions 31a are switched to either an on state or an off state according to the operation of the handle 33a.

第３端子ｔ３ａには、負荷に電気的に接続された接地分岐線２０３が接続される。第４端子ｔ４ａは、電線２０４に電気的に接続され、電線２０４を介して接地端子１１ａに電気的に接続される（図５参照）。接地端子１１ａは、ＭＣＢ３の第４端子ｔ４が電気的に接続される接地端子１１とは別に設けられている。これにより、絶縁接地が実現できる。なお、接地端子１１ａは、分電盤１に設けられていてもよいし、分電盤１のキャビネット１０外に設けられていてもよい。 A ground branch line 203 electrically connected to the load is connected to the third terminal t3a. The fourth terminal t4a is electrically connected to the electric wire 204 and electrically connected to the ground terminal 11a via the electric wire 204 (see FIG. 5). The ground terminal 11a is provided separately from the ground terminal 11 to which the fourth terminal t4 of the MCB3 is electrically connected. As a result, insulated grounding can be realized. The ground terminal 11a may be provided on the distribution board 1 or may be provided outside the cabinet 10 of the distribution board 1.

短絡回路３２ａは、第３端子ｔ３ａと第４端子ｔ４ａとの間を電気的に短絡（接続）する。 The short-circuit circuit 32a electrically short-circuits (connects) between the third terminal t3a and the fourth terminal t4a.

ケース３０ａには、長手方向の一端部において、第２端子ｔ２ａとなる速結端子７０ａと、第３端子ｔ３ａとなる速結端子８０ａ及び第４端子ｔ４ａとなる速結端子９０ａとが配置されている（図５，図９，図１０参照）。２つの速結端子７０ａと、速結端子８０ａ及び速結端子９０ａとは、高さ方向に２段に並ぶように設けられている（図９，図１０参照）。２個の速結端子７０ａ（第２端子ｔ２ａ）はケース３０ａの短手（幅）方向に並ぶように配置され、速結端子８０ａ，９０ａもケース３０の幅方向に並ぶように配置されている。ケース３０ａの側面には、２個の速結端子７０ａの各々に対応する位置に２個の貫通孔３７ａが設けられ、速結端子８０ａ，９０ａの各々に対応する位置に２個の貫通孔３８ａ，３９ａが設けられている（図８〜図１０参照）。 In the case 30a, a fast-connecting terminal 70a serving as a second terminal t2a, a quick-connecting terminal 80a serving as a third terminal t3a, and a fast-connecting terminal 90a serving as a fourth terminal t4a are arranged at one end in the longitudinal direction. (See FIGS. 5, 9, and 10). The two quick-connect terminals 70a, the quick-connect terminal 80a, and the quick-connect terminal 90a are provided so as to be arranged in two stages in the height direction (see FIGS. 9 and 10). The two quick-connect terminals 70a (second terminal t2a) are arranged so as to be arranged in the lateral direction (width) of the case 30a, and the quick-connect terminals 80a and 90a are also arranged so as to be arranged in the width direction of the case 30. .. On the side surface of the case 30a, two through holes 37a are provided at positions corresponding to each of the two quick-connect terminals 70a, and two through holes 38a are provided at positions corresponding to each of the quick-connect terminals 80a and 90a. , 39a are provided (see FIGS. 8 to 10).

第３端子ｔ３ａは、図８に示す貫通孔３８ａを通してケース３０ａに挿入される電線（接地分岐線２０３）に接続される。第４端子ｔ４ａは、図８に示す貫通孔３９ａを通してケース３０ａに挿入される電線２０４に接続される。これにより、第４端子ｔ４ａは、電線２０４を介して接地される。 The third terminal t3a is connected to an electric wire (ground branch line 203) inserted into the case 30a through the through hole 38a shown in FIG. The fourth terminal t4a is connected to the electric wire 204 inserted into the case 30a through the through hole 39a shown in FIG. As a result, the fourth terminal t4a is grounded via the electric wire 204.

第３端子ｔ３ａ（速結端子８０ａ）は、図９に示すように、端子板８１ａと、鎖錠バネ８２ａと、解除部材８３ａとを備える。端子板８１ａと、鎖錠バネ８２ａと、解除部材８３ａとは、上述した端子板８１ａと、鎖錠バネ８２ａと、解除部材８３ａと同じであるので、ここでの説明は省略する。 As shown in FIG. 9, the third terminal t3a (quick connection terminal 80a) includes a terminal plate 81a, a lock spring 82a, and a release member 83a. Since the terminal plate 81a, the lock spring 82a, and the release member 83a are the same as the terminal plate 81a, the lock spring 82a, and the release member 83a described above, the description thereof is omitted here.

端子板８１ａは、短絡回路３２ａを構成する帯板状の導電板３２５ａの一端部と接続されている。 The terminal plate 81a is connected to one end of a strip-shaped conductive plate 325a constituting the short-circuit circuit 32a.

第４端子ｔ４ａ（速結端子９０ａ）は、図１０に示すように、端子板９１ａと、鎖錠バネ９２ａと、解除部材９３ａとを備える。端子板９１ａと、鎖錠バネ９２ａと、解除部材９３ａとについては、端子板８１ａと、鎖錠バネ８２ａと、解除部材８３ａと同様の構造であるので、ここでの説明は省略する。 As shown in FIG. 10, the fourth terminal t4a (quick connection terminal 90a) includes a terminal plate 91a, a lock spring 92a, and a release member 93a. Since the terminal plate 91a, the lock spring 92a, and the release member 93a have the same structure as the terminal plate 81a, the lock spring 82a, and the release member 83a, the description thereof is omitted here.

端子板９１ａは、導電板３２５ａの他端部と接続されている。つまり、導電板３２５ａの一端部が端子板８１ａと、導電板３２５ａの他端部が端子板９１ａとそれぞれ接続されることで、第３端子ｔ３ａと第４端子ｔ４ａとが短絡回路３２ａにより電気的に接続される。 The terminal plate 91a is connected to the other end of the conductive plate 325a. That is, one end of the conductive plate 325a is connected to the terminal plate 81a, and the other end of the conductive plate 325a is connected to the terminal plate 91a, so that the third terminal t3a and the fourth terminal t4a are electrically connected by the short-circuit circuit 32a. Connected to.

なお、第４端子ｔ４ａは、図１１に示すように、ＭＣＢ３の第４端子ｔ４が電気的に接続される接地端子１１に、電気的に接続されてもよい。これにより、統合接地が実現できる。 As shown in FIG. 11, the fourth terminal t4a may be electrically connected to the ground terminal 11 to which the fourth terminal t4 of the MCB3 is electrically connected. As a result, integrated grounding can be realized.

なお、ＥＬＢ３ａは、統合接地及び絶縁接地のいずれにも対応できる構成であってもよい。この場合の構成について、図１２Ａ，１２Ｂに基づいて説明する。 The ELB3a may be configured to support both integrated grounding and insulated grounding. The configuration in this case will be described with reference to FIGS. 12A and 12B.

ＥＬＢ３ａは、上述した構成に加えて接続端子ｔ５ａ及びスイッチ４０ａを備えている。 The ELB3a includes a connection terminal t5a and a switch 40a in addition to the above-described configuration.

接続端子ｔ５ａは、金属製の取付部材４に電気的に接続され、取付部材４を介して接地端子１１と電気的に接続される。つまり、接続端子ｔ５ａは、ＭＣＢ３の第４端子ｔ４と同様の機能を有している。 The connection terminal t5a is electrically connected to the metal mounting member 4, and is electrically connected to the ground terminal 11 via the mounting member 4. That is, the connection terminal t5a has the same function as the fourth terminal t4 of the MCB3.

スイッチ４０ａは、ディップスイッチ、スライドスイッチ、スライド式のディップスイッチ等であり、第３端子ｔ３ａと接続端子ｔ５ａとの間に設けられている。スイッチ４０ａは、ユーザの操作により第３端子ｔ３ａと接続端子ｔ５ａとを電気的に接続した状態（オン状態）、及び非接続の状態（オフ状態）の何れかに切り替えられる。 The switch 40a is a DIP switch, a slide switch, a slide type DIP switch, or the like, and is provided between the third terminal t3a and the connection terminal t5a. The switch 40a can be switched between a state in which the third terminal t3a and the connection terminal t5a are electrically connected (on state) and a state in which the third terminal t5a is not connected (off state) by a user operation.

例えば、図１２Ａに示すように、スイッチ４０ａがオフ状態、つまり第３端子ｔ３ａ及び第４端子ｔ４ａと接続端子ｔ５ａとが非接続状態である場合には、第３端子ｔ３ａは、第４端子ｔ４ａを介して接地される。また、図１２Ｂに示すように、スイッチ４０ａがオン状態、つまり第３端子ｔ３ａ及び第４端子ｔ４ａと接続端子ｔ５ａとが接続状態である場合には、第３端子ｔ３ａは、接続端子ｔ５ａを介して接地される。これにより、ＥＬＢ３ａは、統合接地及び絶縁接地のいずれにも対応できる。 For example, as shown in FIG. 12A, when the switch 40a is in the off state, that is, when the third terminal t3a and the fourth terminal t4a and the connection terminal t5a are not connected, the third terminal t3a is the fourth terminal t4a. It is grounded through. Further, as shown in FIG. 12B, when the switch 40a is in the ON state, that is, when the third terminal t3a and the fourth terminal t4a and the connection terminal t5a are in the connection state, the third terminal t3a is connected via the connection terminal t5a. Is grounded. As a result, the ELB3a can handle both integrated grounding and insulated grounding.

以上のように、本実施形態の開閉器（漏電遮断器３ａ）は、第１端子ｔ１ａと、第２端子ｔ２ａと、接点部３１と、第３端子ｔ３ａと、第４端子ｔ４とを備える。第１端子ｔ１ａは、電源（商用電源１００）が接続された第１電線（導電バー５）が接続される。第２端子ｔ２ａは、負荷が接続された第２電線（分岐線２０２）が接続される。接点部３１は、第１端子１ａと第２端子ｔ２ａとの間に電気的に接続される。第３端子ｔ３ａは、負荷に電気的に接続された接地線（接地分岐線２０３）が接続される。第４端子ｔ４ａは、第３端子ｔ３ａと並んで配置され、第３端子ｔ３ａに電気的に接続される。また、第４端子ｔ４ａは接地されるように構成されている。例えば、第４端子ｔ４ａと第３端子ｔ３ａとは、上述したようにケース３０の一端部において並んで配置される。 As described above, the switch (earth leakage breaker 3a) of the present embodiment includes a first terminal t1a, a second terminal t2a, a contact portion 31, a third terminal t3a, and a fourth terminal t4. The first electric wire (conductive bar 5) to which the power source (commercial power source 100) is connected is connected to the first terminal t1a. The second electric wire (branch line 202) to which the load is connected is connected to the second terminal t2a. The contact portion 31 is electrically connected between the first terminal 1a and the second terminal t2a. A ground wire (ground branch line 203) electrically connected to the load is connected to the third terminal t3a. The fourth terminal t4a is arranged side by side with the third terminal t3a and is electrically connected to the third terminal t3a. Further, the fourth terminal t4a is configured to be grounded. For example, the fourth terminal t4a and the third terminal t3a are arranged side by side at one end of the case 30 as described above.

本実施形態の開閉器（漏電遮断器３ａ）によれば、第４端子ｔ４ａは、第３端子ｔ３ａと並んで配置されているので、接地の確認作業では、第４端子ｔ４ａと第３端子ｔ３ａとが配置された箇所を確認すればよく、従来のように開閉器の両端部を確認する必要がない。そのため、本実施形態の開閉器（漏電遮断器３ａ）によれば、接地の確認作業を容易にすることができる。 According to the switch (earth leakage breaker 3a) of the present embodiment, the fourth terminal t4a is arranged side by side with the third terminal t3a. Therefore, in the grounding confirmation work, the fourth terminal t4a and the third terminal t3a It is only necessary to check the location where the and is placed, and it is not necessary to check both ends of the switch as in the conventional case. Therefore, according to the switch (earth leakage breaker 3a) of the present embodiment, the grounding confirmation work can be facilitated.

また、第３端子ｔ３ａに接地分岐線２０３が接続されることによって、第４端子ｔ４ａを介して接地分岐線２０３が接地される。また、分岐線２０２と接地分岐線２０３とは分岐開閉器３に接続されるので、分岐線２０２及び接地分岐線２０３が多芯のＶＶ線（ビニル絶縁ビニルシースケーブル）で構成される場合、各々の電線の末端加工が同じになり、末端加工に要する加工時間を短縮できる。 Further, by connecting the ground branch line 203 to the third terminal t3a, the ground branch line 203 is grounded via the fourth terminal t4a. Further, since the branch line 202 and the ground branch line 203 are connected to the branch switch 3, when the branch line 202 and the ground branch line 203 are composed of a multi-core VV line (vinyl insulated vinyl sheath cable), each of them. The end processing of the electric wire is the same, and the processing time required for end processing can be shortened.

本実施形態の開閉器（漏電遮断器３ａ）において、接続端子ｔ５ａと、スイッチ４０ａとをさらに備えてもよい。接続端子ｔ５ａは、分電盤１に設けられた接地端子１１に電気的に接続される。スイッチ４０ａは、第３端子ｔ３ａ及び第４端子ｔ４ａと接続端子ｔ５ａとの間に電気的に接続されている。 The switch (earth leakage breaker 3a) of the present embodiment may further include a connection terminal t5a and a switch 40a. The connection terminal t5a is electrically connected to the ground terminal 11 provided on the distribution board 1. The switch 40a is electrically connected between the third terminal t3a and the fourth terminal t4a and the connection terminal t5a.

スイッチ４０ａの操作に応じて、統合接地及び絶縁接地のいずれにも対応することができる。 Depending on the operation of the switch 40a, both integrated grounding and insulated grounding can be supported.

本実施形態の開閉器（漏電遮断器３ａ）において、第１端子ｔ１ａ、第２端子ｔ２ａ、接点部３１、第３端子ｔ３ａ、第４端子ｔ４ａ、及び接続端子ｔ５ａを収納（保持）するケース３０ａをさらに備えてもよい。接続端子ｔ５ａは、ケース３０ａを取り付けるために分電盤１に設けられた金属製の取付部材４と導通し、取付部材４を介して接地端子ｔ５ａと電気的に接続されるように構成されてもよい。 In the switch (earth leakage breaker 3a) of the present embodiment, the case 30a for accommodating (holding) the first terminal t1a, the second terminal t2a, the contact portion 31, the third terminal t3a, the fourth terminal t4a, and the connection terminal t5a. May be further provided. The connection terminal t5a is configured to conduct with a metal mounting member 4 provided on the distribution board 1 for mounting the case 30a and to be electrically connected to the ground terminal t5a via the mounting member 4. May be good.

分電盤１の取付部材４に開閉器（漏電遮断器３ａ）のケース３０を取り付けるだけで、第４端子ｔ４が取付部材４を介して接地端子１１に電気的に接続させることができる。 By simply attaching the case 30 of the switch (earth leakage breaker 3a) to the mounting member 4 of the distribution board 1, the fourth terminal t4 can be electrically connected to the ground terminal 11 via the mounting member 4.

また本実施形態の分電盤１は、上記の開閉器（漏電遮断器３ａ）と、開閉器（漏電遮断器３ａ）を収納するキャビネット１０とを備えたことを特徴とする。 Further, the distribution board 1 of the present embodiment is characterized by including the above-mentioned switch (earth leakage breaker 3a) and a cabinet 10 for accommodating the switch (earth leakage breaker 3a).

本実施形態の分電盤１によれば、第４端子ｔ４ａは、第３端子ｔ３ａと並列に配置されているので、接地の確認作業では、第４端子ｔ４ａと第３端子ｔ３ａとが配置された箇所を確認すればよく、従来のように開閉器の両端部を確認する必要がない。そのため、本実施形態の分電盤１によれば、接地の確認作業を容易にすることができる。 According to the distribution board 1 of the present embodiment, the fourth terminal t4a is arranged in parallel with the third terminal t3a, so that the fourth terminal t4a and the third terminal t3a are arranged in the grounding confirmation work. It is only necessary to check the location, and it is not necessary to check both ends of the switch as in the past. Therefore, according to the distribution board 1 of the present embodiment, the grounding confirmation work can be facilitated.

本実施形態の分電盤１において、開閉器（漏電遮断器３ａ）とは別の開閉器（配線用遮断器３）をさらに備えてもよい。配線用遮断器３は、第５端子（第１端子ｔ１）と、第６端子（第２端子ｔ２）と、接点部３１と、第７端子（第３端子ｔ３）と、第８端子（第４端子ｔ４）と、接続回路（短絡回路３２）とを備える。第５端子は、第１電線（導電バー５）が接続される。第６端子は、別の負荷が電気的に接続される電線が接続される。接点部３１は、第５端子と第６端子との間に電気的に接続される。第７端子は、別の負荷に電気的に接続された接地線が接続される。第８端子は、分電盤１に設けられた接地端子１１に電気的に接続される。接続回路（短絡回路３２）は、第７端子と第８端子との間を電気的に接続（短絡）する。 The distribution board 1 of the present embodiment may further include a switch (wiring breaker 3) different from the switch (earth leakage breaker 3a). The molded case circuit breaker 3 includes a fifth terminal (first terminal t1), a sixth terminal (second terminal t2), a contact portion 31, a seventh terminal (third terminal t3), and an eighth terminal (third terminal t3). It includes a 4-terminal t4) and a connection circuit (short-circuit circuit 32). The first electric wire (conductive bar 5) is connected to the fifth terminal. An electric wire to which another load is electrically connected is connected to the sixth terminal. The contact portion 31 is electrically connected between the fifth terminal and the sixth terminal. A ground wire electrically connected to another load is connected to the seventh terminal. The eighth terminal is electrically connected to the ground terminal 11 provided on the distribution board 1. The connection circuit (short circuit 32) electrically connects (shorts) between the 7th terminal and the 8th terminal.

本実施形態の分電盤１によれば、別の負荷に接続された接地線が第７端子に接続されることによって、分電盤１の集中接地端子を介して接地線が接地される。 According to the distribution board 1 of the present embodiment, the ground wire connected to another load is connected to the seventh terminal, so that the ground wire is grounded through the centralized ground terminal of the distribution board 1.

本実施形態の分電盤１において、第４端子ｔ４ａは、接地端子１１と電気的に接続されるように構成されてもよい。これにより、本実施形態の分電盤１は、統合接地を実現することができる。 In the distribution board 1 of the present embodiment, the fourth terminal t4a may be configured to be electrically connected to the ground terminal 11. As a result, the distribution board 1 of the present embodiment can realize integrated grounding.

本実施形態の分電盤１において、第４端子ｔ４ａは、接地端子１１とは別の接地端子１１ａと電気的に接続されるように構成されてもよい。これにより、本実施形態の分電盤１は、絶縁接地を実現することができる。 In the distribution board 1 of the present embodiment, the fourth terminal t4a may be configured to be electrically connected to a ground terminal 11a different from the ground terminal 11. As a result, the distribution board 1 of the present embodiment can realize insulated grounding.

１分電盤
３分岐開閉器、配線用遮断器（開閉器）
３ａ漏電遮断器（開閉器）
４取付部材
５導電バー（母線、第１電線）
１０キャビネット
１１接地端子
３０ケース
３１接点部
３２短絡回路（接続回路）
８０速結端子（第３端子）
２０２分岐線（第２電線）
２０３接地分岐線
２０４電線
ｔ１第１端子（第５端子）
ｔ２第２端子（第６端子）
ｔ３第３端子（第７端子）
ｔ４第４端子（第８端子）
ｔ１ａ第１端子
ｔ２ａ第２端子
ｔ３ａ第３端子
ｔ４ａ第４端子
ｔ５ａ接続端子 1 Distribution board 3 Branch switch, circuit breaker for wiring (switch)
3a Earth leakage breaker (switch)
4 Mounting member 5 Conductive bar (bus bar, first wire)
10 Cabinet 11 Ground terminal 30 Case 31 Contact part 32 Short circuit (connection circuit)
80 Quick connection terminal (3rd terminal)
202 branch line (second wire)
203 Grounding branch line 204 Electric wire t1 1st terminal (5th terminal)
t2 2nd terminal (6th terminal)
t3 3rd terminal (7th terminal)
t4 4th terminal (8th terminal)
t1a 1st terminal t2a 2nd terminal t3a 3rd terminal t4a 4th terminal t5a connection terminal

Claims

The first terminal, which is electrically connected to the power supply,
The second terminal, which is electrically connected to the load ,
A third terminal electrically connected to the ground line before Symbol load is connected,
It is provided with a fourth terminal that is arranged side by side with the third terminal and is electrically connected to the third terminal.
The fourth terminal is configured to be grounded, and further
A connection terminal that is electrically connected to the ground terminal provided on the distribution board,
A switch comprising the third terminal and a switch electrically connected between the fourth terminal and the connection terminal.

Further comprising a casing for retaining the first terminal, the second terminal, prior Symbol third terminal, the fourth terminal, and the connection terminal,
The connection terminal is configured to conduct with a metal mounting member provided on the distribution board for mounting the case and to be electrically connected to the ground terminal via the mounting member. The switch according to claim 1.

The switch according to claim 1 or 2,
A distribution board characterized by being provided with a cabinet for storing the switch.

Further equipped with a switch different from the switch,
The other switch
The fifth terminal electrically connected to the power supply and
A sixth terminal to which a load other than the load is electrically connected,
A contact portion electrically connected between the fifth terminal and the sixth terminal,
The seventh terminal to which the ground wire electrically connected to the other load is connected,
The eighth terminal, which is electrically connected to the ground terminal provided on the distribution board,
The distribution board according to claim 3, further comprising a connection circuit for electrically connecting the seventh terminal and the eighth terminal.

The distribution board according to claim 4, wherein the fourth terminal is configured to be electrically connected to the ground terminal.

The distribution board according to claim 4, wherein the fourth terminal is configured to be electrically connected to a ground terminal different from the ground terminal.

It ’s a switch,
A pair of first terminals that are electrically connected to the power supply,
Is electrically connected to a load, and a pair of second terminals arranged in the widthwise direction of the switch,
A first lead portion in which the first ground line electrically connected before Symbol load is pulled out,
It is provided with a second lead-out portion from which the second ground wire electrically connected to the first ground wire is drawn out.
The first drawer portion and the second drawer portion are arranged side by side along the arrangement direction of the pair of second terminals.
A switch characterized in that the second ground wire is grounded.

The first terminal, which is electrically connected to the power supply,
The second terminal, which is electrically connected to the load ,
A third terminal electrically connected to the ground line before Symbol load is connected,
A switch having a fourth terminal arranged side by side with the third terminal and electrically connected to the third terminal, and a switch.
A cabinet for storing the switch and
1st ground terminal and
The first ground terminal is provided with a second ground terminal that is electrically unconnected.
A distribution board characterized in that the ground wire is electrically connected to one ground terminal of the first ground terminal and the second ground terminal depending on the presence or absence of an earth leakage breaker function.