JP5704693B2 - Power supply voltage measurement structure for load circuit of residential distribution board - Google Patents

Power supply voltage measurement structure for load circuit of residential distribution board Download PDF

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JP5704693B2
JP5704693B2 JP2010267641A JP2010267641A JP5704693B2 JP 5704693 B2 JP5704693 B2 JP 5704693B2 JP 2010267641 A JP2010267641 A JP 2010267641A JP 2010267641 A JP2010267641 A JP 2010267641A JP 5704693 B2 JP5704693 B2 JP 5704693B2
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branch switch
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JP2011142800A (en
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哲男 古本
哲男 古本
馬場　隆
隆 馬場
党正 羽生
党正 羽生
邦明 品田
邦明 品田
誠 今川
誠 今川
健造 毎熊
健造 毎熊
田中　康之
康之 田中
良 吉川
良 吉川
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Tempearl Industrial Co Ltd
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Description

本発明は、住宅用分電盤に設けられた母線と接続されて各分岐回路に電源を供給する分岐開閉器に供給される電源電圧の大きさを測定する機能を有した住宅用分電盤に関し、特に、前記母線と分岐開閉器との接続がプラグインで行われ、分岐開閉器の電路開閉用操作ハンドルを切りにした状態で、分岐開閉器に供給される電源電圧の大きさを利便性よく測定することができる機能を有した住宅用分電盤に係る。 The present invention relates to a residential distribution board having a function of measuring the magnitude of a power supply voltage supplied to a branch switch connected to a bus provided in the residential distribution board and supplying power to each branch circuit. In particular, the connection between the bus bar and the branch switch is made by plug-in, and the magnitude of the power supply voltage supplied to the branch switch is convenient in a state in which the operation handle for switching the electric circuit of the branch switch is turned off. It relates to a residential distribution board with a function that can be measured with good quality.

住宅用分電盤は、キャビネットの内部に、主開閉器、該主開閉器の二次側に接続される母線、該母線と各々接続される分岐開閉器などの内部機器を組み込んだもので、住宅等における電路の引込口装置として用いられている。適用される電路は、通常、交流５０Ｈｚ又は６０Ｈｚの単相２線式電路（１００Ｖ）、もしくは単相３線式電路（１００／２００Ｖ）が印加される電路である。 A residential distribution board is a cabinet incorporating internal devices such as a main switch, a bus connected to the secondary side of the main switch, and a branch switch connected to the bus. It is used as a service entrance device for electric circuits in houses and the like. The electric circuit to be applied is usually an electric circuit to which an AC 50 Hz or 60 Hz single-phase two-wire electric circuit (100 V) or a single-phase three-wire electric circuit (100/200 V) is applied.

近年、住宅内で使用される電気機器として、機器への電源供給のために専用回路を必要とするものが増え、前記分岐開閉器と直接配線して接続する機器が増えている。例えば、２４時間換気システムや、ビルトインタイプの食洗器などが該当する。このような機器に電源を供給する場合、分岐開閉器と機器との配線を行った後で、該分岐開閉器の電路開閉用の操作ハンドルを入りとすることで電源が機器に供給される。機器には、機器本体に電源スイッチが設けられていないものがあり、そのような機器の場合には、電路開閉用の操作ハンドルを入りとすると直ちに電源が印加される。 In recent years, an electrical device used in a house requires an exclusive circuit for supplying power to the device, and an apparatus that directly connects and connects to the branch switch is increasing. For example, a 24-hour ventilation system or a built-in type dishwasher is applicable. When supplying power to such a device, after wiring the branch switch and the device, the power is supplied to the device by turning on the operation handle for opening and closing the electric circuit of the branch switch. Some devices are not provided with a power switch on the device body. In such devices, power is immediately applied when an operation handle for opening and closing the electric circuit is turned on.

単相３線式の電路のように、３線の内、選択する２線に応じて電源電圧の大きさが１００Ｖ又は２００Ｖの複数出力される電路に適用される分電盤においては、各分岐回路には、該各分岐回路に接続される機器に適した大きさの電圧が供給される必要がある。そこで、機器に供給する電源電圧を分岐回路に接続される機器に応じて適宜切り替えられるように母線側に電圧切換え構造を持たせた分電盤が公知である。 In a distribution board that is applied to a circuit that outputs a plurality of power supply voltages of 100 V or 200 V according to two selected lines among three lines, such as a single-phase three-wire circuit, each branch The circuit needs to be supplied with a voltage having a magnitude suitable for the equipment connected to each branch circuit. Therefore, a distribution board is known in which a voltage switching structure is provided on the bus side so that the power supply voltage supplied to the device can be appropriately switched according to the device connected to the branch circuit.

例えば、特許文献１においては、図１６に示したように、主電路を形成するブスバー（特許文献１の符号１、２、３）と、回路遮断器の端子にねじ締め接続されるブスバーの足部（特許文献１の符号１０１、３０１、６０１等）の間に、切替装置を設けて構成している。この切替装置は、該切替装置を構成する接続バー（特許文献１の符号６）に設けられた長穴（特許文献１の符号６０２）と切替片（特許文献１の符号８）の穴部に共に貫通させた切替ネジ（特許文献１の符号７）の位置を前記長穴の一端もしくは他端に移動させて導通させる導体を選択し回路遮断器の端子に接続される導体を切替えて、回路遮断器に供給する電圧を変更するものである。 For example, in Patent Document 1, as shown in FIG. 16, bus bars (reference numerals 1, 2, and 3 in Patent Document 1) that form a main electric circuit and bus bar legs that are screwed and connected to terminals of a circuit breaker Switching devices are provided between the units (reference numerals 101, 301, 601 and the like of Patent Document 1). This switching device is provided in a hole of a long hole (reference number 602 of patent document 1) and a switching piece (reference number 8 of patent document 1) provided in a connection bar (reference number 6 of patent document 1) constituting the switching device. The position of the switching screw (reference numeral 7 in Patent Document 1) penetrated together is moved to one end or the other end of the elongated hole to select a conductor to be conducted, and the conductor connected to the terminal of the circuit breaker is switched to change the circuit. The voltage supplied to the circuit breaker is changed.

特許文献２においては、図１７に示したように、特許文献１と同じく、主電路を形成するブスバー（特許文献２の符号１１、１２、１３）と、回路遮断器のプラグインタイプの端子がプラグイン接続されるブスバーの接続部（特許文献２の符号１３０１、２００１等）の間に、切替装置を設けて構成している。そして切替装置を構成する送り板（特許文献２の符号２０）に設けられた長穴部と筒状導体子（特許文献２の符号１８）に共に貫通させたねじ（特許文献２の符号１７）の位置を前記長穴の一端もしくは他端に移動させて導通させる導体を選択し回路遮断器の端子に接続されるブスバーを切替えて、回路遮断器に供給する電圧を変更するものである。 In Patent Document 2, as shown in FIG. 17, as in Patent Document 1, busbars (reference numerals 11, 12, and 13 of Patent Document 2) that form a main electric circuit and plug-in type terminals of a circuit breaker are provided. A switching device is provided between the connection parts of the bus bars that are plug-in connected (reference numerals 1301, 2001, etc. in Patent Document 2). And a screw (reference numeral 17 of patent document 2) which penetrates both a long hole provided in a feed plate (reference numeral 20 of patent document 2) and a cylindrical conductor (reference numeral 18 of patent document 2) constituting the switching device. Is moved to one end or the other end of the elongated hole, the conductor to be conducted is selected, the bus bar connected to the terminal of the circuit breaker is switched, and the voltage supplied to the circuit breaker is changed.

分岐開閉器に供給する電源電圧を適宜母線側で切替設定し、分岐開閉器と機器との配線接続が完了した後、機器に電源を印加する前には、通常、該機器に適した大きさの電圧が印加されるか否かを確認するために、電圧測定作業を行う。特許文献１に示した分電盤の場合には、分岐開閉器（特許文献１の符号５）に接続される前記ブスバーの足部（特許文献１の符号１０１、３０１）に電圧測定のために電圧測定器に接続されたテストリードを当接させ、該足部間の電圧を測定する。特許文献２に示した分電盤の場合には、分岐開閉器（特許文献２の符号１５）に接続される前記ブスバーの接続部（特許文献２の符号１３０１、２００１）に電圧測定器のテストリードを当接させ、該足部間の電圧を測定する。 After the power supply voltage supplied to the branch switch is appropriately switched on the bus side and the wiring connection between the branch switch and the device is completed, before the power is applied to the device, it is usually of a suitable size for the device. In order to confirm whether or not a voltage of 1 is applied, a voltage measurement operation is performed. In the case of the distribution board shown in Patent Document 1, a voltage is applied to the foot of the bus bar (reference numerals 101 and 301 in Patent Document 1) connected to the branch switch (reference numeral 5 in Patent Document 1). A test lead connected to the voltage measuring device is brought into contact with the voltage measuring device, and the voltage between the feet is measured. In the case of the distribution board shown in Patent Document 2, the voltage measuring device is connected to the connecting portion (1301, 2001 in Patent Document 2) of the bus bar connected to the branch switch (reference 15 in Patent Document 2). The lead is brought into contact, and the voltage between the feet is measured.

特開平９−２７１１０８号公報JP-A-9-271108 特開２００２−１３５９１９号公報JP 2002-135919 A 特許第４１４７６６５号Japanese Patent No. 4147665

前述したような、母線側に電圧切替構造を持たせた住宅用分電盤にあっては、
該電圧切替構造として用いる、接続バーと送り板、また、これら接続バーと送り板に付随する切替ネジと切替片や筒状導体子などの多くの部材構成部材が必要となり、それらの組み立てに要する工数とも相まって、コストダウンを図りにくい。 In residential distribution boards with a voltage switching structure on the bus side as described above,
A connection bar and a feed plate used as the voltage switching structure, and a switching screw and a switching member associated with the connection bar and the feed plate, as well as many member constituent members such as a switching piece and a cylindrical conductor, are required for assembling them. Combined with man-hours, it is difficult to reduce costs.

また、電圧切替えのために、前記切替ネジを操作する際には、一旦切替ネジを緩め、該切替ネジの場所を移動させ、再度ネジを締める必要があり、仮に、切替ネジの規定締付トルクに達しない状態で切替操作を完了した場合には、電気安全が充分に保たれなくなるおそれが生ずる。電圧切替作業は原則主開閉器の電源を切りにして行うが、誤って主開閉器を切りにしないまま作業を行ってしまうと、感電などの電気事故が発生してしまう可能性がある。 Also, when operating the switching screw for voltage switching, it is necessary to loosen the switching screw once, move the position of the switching screw, and tighten the screw again. Temporarily, the specified tightening torque of the switching screw If the switching operation is completed in a state that does not reach the threshold, there is a risk that the electrical safety cannot be sufficiently maintained. In principle, the voltage switching operation is performed with the main switch turned off. However, if the operation is performed without turning off the main switch, an electrical accident such as an electric shock may occur.

さて、電圧切替構造を、母線側ではなく分岐開閉器側に持たせたものもある。例えば、特許文献３においては、図１８に示したように、母線を、分岐開閉器の取付面から操作ハンドルの方向に３段に重ねて設け（特許文献３の符号Ｂ１、Ｂ２、Ｂ３）、これら３段に設けられた母線のうち所定の２つの母線にプラグイン端子（特許文献３の符号３）を接続可能なように、予め各々の極においてプラグイン端子の位置の配置を調整しておくことにより、分岐開閉器に供給する電源電圧を適宜選択切替するものである。電圧を切替えるときには、母線から一旦分岐開閉器を取り外すため、仮に、主開閉器を切りにしないまま作業を行うことがあったとしても、取り外した分岐開閉器には電源は供給されていないから、取り外した後にプラグイン端子３の配置を調整するにあたっては感電するおそれは低減する。 In some cases, the voltage switching structure is provided on the branch switch side instead of the bus side. For example, in Patent Document 3, as shown in FIG. 18, the bus bars are provided in three stages in the direction of the operation handle from the mounting surface of the branch switch (reference numerals B1, B2, and B3 in Patent Document 3). The position of the plug-in terminal is adjusted in advance in each pole so that the plug-in terminal (reference numeral 3 in Patent Document 3) can be connected to two predetermined buses among the buses provided in these three stages. Thus, the power supply voltage supplied to the branch switch is appropriately selected and switched. When switching the voltage, to remove the branch switch once from the bus, even if there is a work without turning off the main switch, power is not supplied to the removed branch switch, In adjusting the arrangement of the plug-in terminals 3 after removal, the risk of electric shock is reduced.

しかしながら、分岐開閉器側に電圧切替構造を持たせたものにあっては、次のような課題があった。 However, in the case where the voltage switching structure is provided on the branch switch side, there are the following problems.

前述したような、プラグインタイプの分岐開閉器においては、分岐開閉器に供給される電圧の測定を行う場合、該分岐開閉器の操作ハンドルにより開閉される接点装置よりも負荷側に各極の電圧測定部が設けられているために、遮断器の操作ハンドルを入りにした状態で、電圧の測定を行う必要があった。即ち、分岐開閉器と直接配線して用いられる電気機器に対して、該電気機器に供給する電圧が正しい電圧か否かを配線後に確認する場合には、分岐開閉器の操作ハンドルを入りにした状態で、電圧測定器のテストリードを前記電圧測定部に当接させ、極間の電圧を測定する必要があった。 In the plug-in type branch switch as described above, when measuring the voltage supplied to the branch switch, each pole is positioned closer to the load side than the contact device opened and closed by the operation handle of the branch switch. Since the voltage measuring unit is provided, it was necessary to measure the voltage with the operation handle of the circuit breaker turned on. That is, for electrical equipment that is used in direct wiring with the branch switch, when checking after wiring that the voltage supplied to the electrical equipment is correct, the operation handle of the branch switch is turned on. In this state, it was necessary to measure the voltage between the electrodes by bringing the test lead of the voltage measuring instrument into contact with the voltage measuring unit.

したがって、仮に、単相３線式の電路において、プラグイン端子を接続する母線を誤って配線していた場合、該分岐開閉器に接続する電気機器の定格電圧が、分岐開閉器から供給される電圧よりも高い場合には、定格電圧に足りず正常運転しないことが想定され、該分岐開閉器に接続する電気機器の定格電圧が、分岐開閉器から供給される電圧よりも低い場合には、過電圧となり電気機器が故障することが想定される。 Therefore, if the bus connecting the plug-in terminal is mistakenly wired in the single-phase three-wire circuit, the rated voltage of the electrical device connected to the branch switch is supplied from the branch switch. When the voltage is higher than the voltage, it is assumed that the rated voltage is insufficient and the normal operation is not performed, and when the rated voltage of the electrical equipment connected to the branch switch is lower than the voltage supplied from the branch switch, It is assumed that electrical equipment will fail due to overvoltage.

また、分岐開閉器には負荷側の各極に電圧測定部が設けられる構造であったため、通常、電圧測定を行う場合には、作業者は、２本のテストリードを、箸を扱うように片手で保持し、もう片手で電圧測定器を保持した状態で、住宅用分電盤に配設された各々の分岐開閉器の電圧測定部に、順番にテストリードを当接させていき、その都度、電圧測定器の計器を確認していた。 In addition, since the branch switch has a structure in which a voltage measuring unit is provided at each pole on the load side, normally, when performing voltage measurement, an operator should handle two test leads with chopsticks. While holding the voltage measuring instrument with one hand and holding the voltage measuring instrument with the other hand, the test leads are brought into contact with the voltage measuring sections of each branch switch arranged on the residential distribution board in turn. Every time I checked the voltage measuring instrument.

住宅用分電盤は、その配設場所が、天井近くであったり、収納庫の内部であったりすることが多く、必ずしも電圧測定作業を行いやすい場所に配設されるものではない。例えば、作業者が梯子に登った状態で、片手に電圧測定器を持ち、もう片手で２本のテストリードを保持して、分岐開閉器における所定の電圧測定部に当接させる作業は容易ではない場合が多い。このため、前記所定の電圧測定部が確認しづらく該電圧測定部にテストリードを当接させられなかったり、不用意に電圧測定部とは異なる場所にテストリードが触れたりするおそれがあり、電気安全が十分に保たれなくなる課題があった。 The distribution board for houses is often arranged near the ceiling or inside the storage, and is not necessarily arranged in a place where voltage measurement work is easily performed. For example, it is not easy to hold a voltage measuring device in one hand and hold two test leads with the other hand so that the operator makes contact with a predetermined voltage measuring unit in the branch switch while climbing on a ladder. Often not. For this reason, it is difficult for the predetermined voltage measuring unit to check, the test lead may not be brought into contact with the voltage measuring unit, or the test lead may inadvertently touch a place different from the voltage measuring unit. There was a problem that safety could not be maintained sufficiently.

そこで、本発明は、上記課題に鑑みてなされたもので、
住宅用分電盤に設けられるプラグイン端子構造を有する分岐開閉器から負荷回路に電源を供給する前に、実際に分岐開閉器に供給される電圧を、分岐開閉器の操作ハンドルをオンする前に、作業性よく確認することができる電圧測定構造を備えた住宅用分電盤を提供することを目的とする。 Therefore, the present invention has been made in view of the above problems,
Before supplying power to the load circuit from a branch switch with a plug-in terminal structure provided on a residential distribution board, before actually turning on the operation handle of the branch switch, supply the voltage supplied to the branch switch. Furthermore, it aims at providing the distribution board for houses provided with the voltage measurement structure which can confirm with sufficient workability | operativity.

本発明に係る住宅用分電盤の負荷回路への供給電源電圧測定構造は、上述の課題を解決すべく構成されたもので、 The power supply voltage measurement structure to the load circuit of the residential distribution board according to the present invention is configured to solve the above-described problem,

住宅用分電盤に配設された互いに電位の異なる第一の電圧極、第二の電圧極及び中性極の母線の内、所定の２つの母線に接続されるプラグイン端子間に印加された電源電圧を、分岐開閉器に設けられた接点装置を入切する操作ハンドルが入のときに負荷回路に供給する分岐開閉器における、該分岐開閉器から負荷回路に供給する電源電圧の大きさを、各々の分岐開閉器毎に、前記操作ハンドルが切の状態で確認する電源電圧測定構造であって、前記電源電圧測定構造は、前記第一の電圧極及び第二の電圧極のそれぞれの母線に設けられて、該母線に接続される複数の分岐開閉器に対して共通して用いられる第一及び第二の母線側電圧測定部と、前記分岐開閉器において前記接点装置よりも電気的に前記プラグイン端子側に設けられて、各々の分岐開閉器毎に個別に用いられる分岐開閉器側電圧測定部とを備え、前記分岐開閉器の操作ハンドルを切にした状態で、前記電源電圧の測定に用いる電圧測定器の２本のテストリードの内、一方のテストリードを前記第一又は第二の母線側電圧測定部に当接させたままで、他方のテストリードを各々の前記分岐開閉器側電圧測定部に対して個別に当接させていくことにより、前記分岐開閉器における前記所定の２つの母線に接続されるプラグイン端子間に印加された電源電圧の測定を行えるようにして住宅用分電盤の負荷回路への供給電源電圧測定構造を構成するとよい。 Applied between the plug-in terminals connected to two predetermined buses among the buses of the first voltage electrode, the second voltage electrode and the neutral electrode having different potentials arranged on the residential distribution board. The magnitude of the power supply voltage supplied from the branch switch to the load circuit in the branch switch that supplies the load circuit to the load circuit when the operation handle for turning on and off the contact device provided on the branch switch is turned on For each branch switch, the power supply voltage measurement structure for confirming that the operation handle is turned off, wherein the power supply voltage measurement structure is a power supply voltage measurement structure for each of the first voltage electrode and the second voltage electrode. A first and second bus-side voltage measuring unit provided on the bus and commonly used for a plurality of branch switches connected to the bus; and more electrically than the contact device in the branch switch Provided on the plug-in terminal side, A Toki switch branch switch-side voltage measurement unit used individually for the at earnestly state the operating handle of the breaker switch, two test leads of the voltage measuring device used to measure the power supply voltage One of the test leads is kept in contact with the first or second bus side voltage measuring unit, and the other test lead is individually brought into contact with each of the branch switch side voltage measuring units. The power supply voltage applied to the load circuit of the residential distribution board can be measured so that the power supply voltage applied between the plug-in terminals connected to the two predetermined buses in the branch switch can be measured. A measurement structure may be constructed.

かかる構成によれば、
分岐開閉器の操作ハンドルが切の状態で、主開閉器の操作ハンドルを入の状態にすることで、母線と接続された分岐開閉器の一次側には、該分岐開閉器に供給される電源が実際に印加されるから、分岐開閉器から負荷回路に電源を供給する前に電圧の測定作業を行え、また、各々の分岐開閉器に当接させる電圧測定用のテストリードは一本でよいため、作業性よく、なおかつ電気安全性を保って電圧の測定作業を行うことができる。 According to such a configuration,
When the operation handle of the branch switch is turned off and the operation handle of the main switch is turned on, the power supplied to the branch switch is connected to the primary side of the branch switch connected to the bus. Is actually applied, voltage measurement work can be performed before supplying power to the load circuit from the branch switch, and only one test lead for voltage measurement to be brought into contact with each branch switch Therefore, the voltage measurement operation can be performed with good workability and while maintaining electrical safety.

また、本発明に係る住宅用分電盤の負荷回路への供給電源電圧測定構造は、前記母線側電圧測定部に、前記テストリードを当接させた際に、該テストリードを保持するテストリード脱落防止手段を備えて構成してもよい。 The power supply voltage measuring structure for the load circuit of the residential distribution board according to the present invention is a test lead for holding the test lead when the test lead is brought into contact with the bus side voltage measuring unit. You may comprise a drop-off prevention means.

かかる構成によれば、
複数の分岐開閉器に対して共通して用いられる第一及び第二の母線側電圧測定部にテストリードを当接させる場合に、該テストリードから手を離すことができるため、電圧測定作業に伴う身体の自由度が増し、作業性がよりよくなり、また、電気安全性も高まるものである。 According to such a configuration,
When the test leads are brought into contact with the first and second busbar side voltage measuring units that are commonly used for a plurality of branch switches, the test leads can be separated from the test leads. As a result, the degree of freedom of the body increases, workability is improved, and electrical safety is also increased.

また、本発明に係る住宅用分電盤の負荷回路への供給電源電圧測定構造は、前記分岐開閉器の操作ハンドルが設けられた面側を分岐開閉器を取付ける面側に対して前面側としたとき、電圧測定対象となるプラグイン端子と電気的に接続された分岐開閉器側電圧測定部に対して、前記前面側から前記テストリードを当接させるための電圧測定用連通孔を備えて構成してもよい。 Further, the power supply voltage measurement structure to the load circuit of the residential distribution board according to the present invention is such that the surface side on which the operation handle of the branch switch is provided is the front side with respect to the surface side on which the branch switch is attached. A voltage measurement communication hole for contacting the test lead from the front side with respect to the branch switch side voltage measurement unit electrically connected to the plug-in terminal as a voltage measurement target. It may be configured.

かかる構成によれば、分岐開閉器における電圧測定対象となるプラグイン端子に対して、確実にテストリードを当接させることができるため、分岐開閉器側に用いるテストリードを当接させやすくなるという作業性のよさと相まって、電気安全性をさらに高められるものである。 According to such a configuration, the test lead can be surely brought into contact with the plug-in terminal which is a voltage measurement target in the branch switch, so that the test lead used on the branch switch side is easily brought into contact. Combined with good workability, the electrical safety can be further enhanced.

以上の如く、本発明によれば、住宅用分電盤に設けられる分岐開閉器から負荷回路に電源を供給する前に、実際に分岐開閉器に供給される電圧を、分岐開閉器の操作ハンドルをオンする前に、作業性よく確認することができる電圧測定構造を備えた住宅用分電盤を提供することができる。 As described above, according to the present invention, before supplying power to the load circuit from the branch switch provided in the residential distribution board, the voltage actually supplied to the branch switch is set to the operation handle of the branch switch. It is possible to provide a residential distribution board having a voltage measurement structure that can be confirmed with good workability before turning on.

第１の実施形態を示す住宅用分電盤における内器ユニット斜視図を示す。The internal unit unit perspective view in the distribution board for houses which shows 1st Embodiment is shown. 同実施形態に係る主要部斜視図を示す。The principal part perspective view which concerns on the same embodiment is shown. 同実施形態に係る分岐線斜視図を示す。The branch line perspective view concerning the embodiment is shown. 同実施形態に係る母線の組立図を示す。The assembly drawing of the bus-bar which concerns on the embodiment is shown. 同実施形態に係る母線の組立図を示す。The assembly drawing of the bus-bar which concerns on the embodiment is shown. 同実施形態に係る母線の組立図を示す。The assembly drawing of the bus-bar which concerns on the embodiment is shown. 同実施形態に係る母線の組立図を示す。The assembly drawing of the bus-bar which concerns on the embodiment is shown. 同実施形態に係る母線の組立図を示す。The assembly drawing of the bus-bar which concerns on the embodiment is shown. 同実施形態に係る分岐開閉器の外観斜視図を示す。The external appearance perspective view of the branch switch concerning the embodiment is shown. 同実施形態に係る分岐開閉器の端子部の図を示す。The figure of the terminal part of the branch switch concerning the embodiment is shown. 同実施形態に係る分岐開閉器の端子部の図を示す。The figure of the terminal part of the branch switch concerning the embodiment is shown. 同実施形態に係る分岐開閉器の端子部の分解斜視図を示す。The disassembled perspective view of the terminal part of the branch switch concerning the embodiment is shown. 同実施形態に係る分岐開閉器の端子部の透視図を示す。The perspective view of the terminal part of the branch switch concerning the embodiment is shown. 同実施形態に係る分岐開閉器の端子部の移動説明図を示す。Movement explanatory drawing of the terminal part of the branch switch concerning the embodiment is shown. 同実施形態に係る住宅用分電盤における分岐開閉器の取付説明図を示す。The attachment explanatory view of the branch switch in the distribution board for houses concerning the embodiment is shown. 従来の接続状態を表わした図を示す。The figure showing the conventional connection state is shown. 従来の接続状態を表わした図を示す。The figure showing the conventional connection state is shown. 従来の接続状態における複数個所で切替を行った図を示す。The figure which switched in several places in the conventional connection state is shown. 他の実施形態に係る要部斜視図を示す。The principal part perspective view which concerns on other embodiment is shown. 接続バーカバーを取り除いた図を示す。The figure which removed the connection bar cover is shown. 図１９の前面側から臨んだ図を示す。The figure which faced from the front side of FIG. 接続バーカバーに接続バーを収納した図を示す。The figure which accommodated the connection bar in the connection bar cover is shown.

次に本発明の実施形態を図１乃至図１５を用いて詳細に説明する。 Next, an embodiment of the present invention will be described in detail with reference to FIGS.

（住宅用分電盤の概要説明）
第１の実施形態に係る住宅用分電盤は、単相３線式の商用電路に用いられるものである。
該住宅用分電盤は、図１乃至図３に示すように、キャビネットの内部に、主開閉器１、該主開閉器１の二次側に図示しない接続部材を介して接続される母線１１、１２、１３、該母線と各々接続される分岐開閉器２などの内部機器を、取付板３、４に取付けた内部ユニット１００として組み込んだもので、主に住宅等における電路の引込口装置として用いられる。主開閉器の二次側と母線との接続は、各極毎に銅バーを折り曲げ又は打ち抜き形成して構成した接続バーや、両端に端子板を接続した電線等を用いて行われる。 (Overview of residential distribution board)
The residential distribution board according to the first embodiment is used for a single-phase three-wire commercial power circuit.
As shown in FIGS. 1 to 3, the residential distribution board includes a main switch 1 and a bus 11 connected to a secondary side of the main switch 1 via a connection member (not shown) inside the cabinet. 12, 13, and an internal device such as a branch switch 2 connected to each of the buses is incorporated as an internal unit 100 attached to the mounting plates 3 and 4. Used. The connection between the secondary side of the main switch and the bus is performed using a connection bar formed by bending or punching a copper bar for each pole, an electric wire having terminal plates connected to both ends, and the like.

前記母線１１、１２、１３は互いに電位が異なるものであり、便宜的に、第一の電圧極となる母線１１をＬ１、第二の電圧極となる母線１２をＬ２、中性極となる母線１３をＮで表す。これら母線は、略柱状に形成された銅バーからなり、該母線が略平行に並べられて、母線を互いに絶縁する絶縁部材５に配設されたうえで、取付板３に取付けられる。 The buses 11, 12, and 13 have different potentials. For convenience, the bus 11 serving as the first voltage electrode is L1, the bus 12 serving as the second voltage electrode is L2, and the bus serving as the neutral electrode. 13 is represented by N. These bus bars are made of copper bars formed in a substantially columnar shape. The bus bars are arranged in parallel and arranged on an insulating member 5 that insulates the bus bars from each other, and then attached to the mounting plate 3.

本住宅用分電盤に設けられる分岐開閉器２には、図９に示すように電圧切替構造が備えられており、母線１１、１２、１３の内、所定の２つの母線とプラグイン端子により電気的に接続されることにより、負荷回路に電源が供給される（詳しくは後述する）。単相３線式の電路においては、負荷回路に供給され得る電源電圧の大きさは、１００Ｖ又は２００Ｖである。 The branch switch 2 provided in the residential distribution board is provided with a voltage switching structure as shown in FIG. 9, and includes two predetermined buses and plug-in terminals among the buses 11, 12, and 13. By being electrically connected, power is supplied to the load circuit (details will be described later). In the single-phase three-wire circuit, the power supply voltage that can be supplied to the load circuit is 100V or 200V.

前記分岐開閉器２のプラグイン端子（図９における２２Ｂ）を前記母線１１（Ｌ１）、１２（Ｎ）と接続した場合には１００Ｖが供給され、前記母線１１（Ｌ１）、１３（Ｌ２）と接続した場合には２００Ｖが供給される。また、前記分岐開閉器のプラグイン端子（２２Ｂ）を前記母線１３（Ｌ２）、１２（Ｎ）と接続した場合には１００Ｖが供給されるが、電圧位相は、前記母線１１（Ｌ１）、１２（Ｎ）と接続した場合の逆の位相となる。 When the plug-in terminal (22B in FIG. 9) of the branch switch 2 is connected to the buses 11 (L1) and 12 (N), 100V is supplied, and the buses 11 (L1) and 13 (L2) When connected, 200V is supplied. Further, when the plug-in terminal (22B) of the branch switch is connected to the busbars 13 (L2) and 12 (N), 100 V is supplied, but the voltage phase is the busbars 11 (L1) and 12 The phase is opposite to that when (N) is connected.

現在では、負荷回路に供給される電源電圧は、住宅内の照明用回路及びテレビやビデオなどの家電機器に用いる一般的なコンセント用回路としては１００Ｖが多く、容量の大きなエアコンなどに用いる回路には２００Ｖを用いる。このように、負荷回路に接続される電気機器に応じて、分岐開閉器２のプラグイン端子と母線との接続状態を変更することにより、分岐開閉器並びに負荷回路に供給する電源の電圧を適切なものに設定する。 At present, the power supply voltage supplied to the load circuit is 100V as a general outlet circuit used for a lighting circuit in a house and a home appliance such as a television or a video, and is used for a circuit used for a large capacity air conditioner. Uses 200V. In this way, by changing the connection state between the plug-in terminal of the branch switch 2 and the bus bar in accordance with the electrical equipment connected to the load circuit, the voltage of the power source supplied to the branch switch and the load circuit is appropriately set. Set to something.

母線の両端部には、該母線と他の導体とを接続するためのねじが貫通される孔が設けられている。そして前記母線の両端間には、母線の長手方向（図１中の左右方向）に沿って、分岐開閉器が並設配置され、また、前記母線１３を境に分岐開閉器の母線との接続部が互いに向き合うように、上下２列に分岐開閉器が配置される。上側の列の分岐開閉器は、母線１１（Ｌ１）と、母線１２（Ｎ）又は母線１３（Ｌ２）と接続され、母線１１（Ｌ１）と母線１２（Ｎ）とに接続されるときは１００Ｖが供給され、母線１１（Ｌ１）と母線１３（Ｌ２）とに接続されるときは２００Ｖが供給される。下側の列の分岐開閉器は、母線１３（Ｌ２）と、母線１２（Ｎ）又は母線１１（Ｌ１）と接続され、母線１３（Ｌ２）と母線１２（Ｎ）とに接続されるときは１００Ｖが供給され、母線１３（Ｌ２）と母線１１（Ｌ１）とに接続されるときは２００Ｖが供給される。 At both ends of the bus, holes through which screws for connecting the bus and other conductors pass are provided. Between both ends of the bus bar, branch switches are arranged in parallel along the longitudinal direction of the bus bar (left and right direction in FIG. 1), and connected to the bus bar of the branch switch with the bus bar 13 as a boundary. The branch switches are arranged in two upper and lower rows so that the parts face each other. The branch switches in the upper row are connected to the bus 11 (L1) and the bus 12 (N) or 13 (L2), and when connected to the bus 11 (L1) and the bus 12 (N), 100V. Is supplied and 200 V is supplied when connected to the bus 11 (L1) and the bus 13 (L2). When the branch switch in the lower row is connected to bus 13 (L2) and bus 12 (N) or bus 11 (L1), and connected to bus 13 (L2) and bus 12 (N) When 100V is supplied and connected to the bus 13 (L2) and the bus 11 (L1), 200V is supplied.

（母線の構造）
次に、母線の構造について図２、図３を用いて詳細に説明を行う。図３は、内部ユニット１００から一部の分岐開閉器を取り外し、母線を露出させた状態を示している。 (Bus structure)
Next, the structure of the bus will be described in detail with reference to FIGS. FIG. 3 shows a state in which some branch switches are removed from the internal unit 100 and the busbars are exposed.

母線１１、１２、１３には、母線と分岐開閉器のプラグイン端子との電気的接続部となる分岐線１１０１ａ、１２０１ａ、１３０１ａが、各々の分岐開閉器の並設位置に対応して、前記長手方向に対して垂直な方向に突出して設けられている。分岐線１１０１ａは母線１１（Ｌ１）に対応し、１２０１ａは母線１２（Ｌ２）に対応し、１３０１ａは母線１３（Ｎ）に対応し、これら１１０１ａ、１２０１ａ、１３０１ａが一つの組となって分岐開閉器の回路数だけ設けられている。 In the buses 11, 12, and 13, branch lines 1101a, 1201a, and 1301a, which are electrical connection portions between the bus bars and the plug-in terminals of the branch switches, correspond to the parallel positions of the branch switches, It protrudes in a direction perpendicular to the longitudinal direction. Branch line 1101a corresponds to bus 11 (L1), 1201a corresponds to bus 12 (L2), 1301a corresponds to bus 13 (N), and these branches 1101a, 1201a, 1301a form a single branch There are as many circuit units as possible.

前記下側の列の分岐開閉器においては、分岐開閉器を母線に接続するときには、分岐開閉器のプラグイン端子を、分岐線１２０１ａ（Ｌ２）を共通として、１１０１ａ（Ｌ１）又は１３０１ａ（Ｎ）に選択的に接続することで、２００Ｖ又は１００Ｖの電源が供給される。 In the branch switch in the lower row, when connecting the branch switch to the bus, the plug-in terminal of the branch switch is shared with the branch line 1201a (L2), and 1101a (L1) or 1301a (N). By selectively connecting to, power of 200V or 100V is supplied.

前記上側の列の分岐開閉器においても同様であり、分岐開閉器のプラグイン端子を、分岐線１１０１ａ（Ｌ１）を共通として、１２０１ａ（Ｌ２）又は１３０１ａ（Ｎ）に選択的に接続することで、２００Ｖ又は１００Ｖの電源が供給される。 The same applies to the branch switches in the upper row, by selectively connecting the plug-in terminals of the branch switches to 1201a (L2) or 1301a (N) with the branch line 1101a (L1) in common. , 200V or 100V power is supplied.

（母線の組立構造） (Assembly structure of busbar)

次に，母線の組立構造について，図４乃至図８を用いて説明する。図４は，各極の母線夫々の外形斜視図を示した図である。 Next, the assembly structure of the bus will be described with reference to FIGS. FIG. 4 is a diagram showing an external perspective view of each bus bar of each pole.

前記各極の母線のうち，１１（Ｌ１），１２（Ｌ２）の電圧極の母線は同一形状に形成されている。 Among the buses of the respective poles, the buses of the voltage poles 11 (L1) and 12 (L2) are formed in the same shape.

Ｌ２の電圧極の母線１２を例として説明すると，Ｌ２の電圧極の母線１２は，該母線の幹となる部分１２０が，前記分岐開閉器２を並設する方向に延出され，両端部には母線と他の電気導体を接続するためのねじ端子を貫通させるための孔が形成されている。 The L2 voltage pole bus 12 will be described as an example. The bus pole 12 of the L2 voltage pole has a trunk portion 120 extending in the direction in which the branch switch 2 is juxtaposed, at both ends. Is formed with a hole for passing through a screw terminal for connecting the bus bar to another electric conductor.

前記幹となる部分１２０には，前記分岐開閉器の分電盤への取付面となる背面から前記操作ハンドルが設けられた前面への方向を高さ方向とした場合に，前記高さ方向に前記幹となる部分と略直角に折曲形成された立上がり部１２１が形成され，該立上がり部１２１から，前記分岐線が，前記幹となる部分１２０と略平行に，互いに反対の方向（接続される分岐開閉器の電源−負荷側方向）に一体に延出されている。 When the direction from the rear surface, which is the mounting surface of the branch switch to the distribution board, to the front surface where the operation handle is provided is the height direction, the trunk portion 120 has the height direction. A rising portion 121 that is bent substantially at right angles to the trunk portion is formed, and from the rising portion 121, the branch line is connected in a direction opposite to each other (connected to the trunk portion 120 substantially in parallel). (The power source-load side direction of the branch switch).

前記分岐線のうち，幹となる部分１２０の方向に延出している分岐線１２０１ａは，図１における下側の列の分岐開閉器２に共通して接続される分岐線であり，分岐線１２０１ｂは，上側の列の分岐開閉器２により他極の分岐線と選択的に接続される分岐線である。 Among the branch lines, a branch line 1201a extending in the direction of the trunk portion 120 is a branch line commonly connected to the branch switch 2 in the lower row in FIG. 1, and the branch line 1201b. Is a branch line that is selectively connected to a branch line of another pole by the branch switch 2 in the upper row.

また，Ｌ１の電圧極の母線１１について説明すると，その外形はＬ２の電圧極の母線１２と同一であり，前記２つの分岐線のうち，幹となる部分１１０の方向に延出している分岐線１１０１ｂは，上側の列の分岐開閉器２に共通して接続される分岐線であり，分岐線１１０１ａは，下側の列の分岐開閉器２により他極の分岐線と選択的に接続される分岐線である。 Further, the bus 11 of the voltage electrode L1 has the same outer shape as the bus 12 of the voltage electrode L2, and the branch line extending in the direction of the trunk portion 110 of the two branch lines. 1101b is a branch line commonly connected to the branch switch 2 in the upper column, and the branch line 1101a is selectively connected to the branch line of the other pole by the branch switch 2 in the lower column. It is a branch line.

前記各極の母線のうち，中性極の母線１３について説明すると，該中性極の母線１３の幹となる部分１３０が，前記電圧極の母線と同様に分岐開閉器２を並設する方向に延出され，両端部には母線と他の電気導体を接続するためのねじ孔が形成されている。 Among the buses of each of the poles, the neutral pole bus 13 will be described. A direction in which the trunk 130 of the neutral pole bus 13 is arranged in parallel with the branch switch 2 like the voltage pole bus. The screw holes for connecting the bus bar and other electric conductors are formed at both ends.

また，中性極の母線１３の両端部は段差を形成するよう折曲げ形成されて，前記絶縁部材５に各極の母線を取付けた場合に，該幹となる部分１３０が前記電圧極の母線１１，１２よりも前記高さ方向において高くなるよう配設される。 Further, both ends of the neutral electrode bus 13 are bent so as to form a step, and when the bus of each electrode is attached to the insulating member 5, the trunk portion 130 becomes the bus of the voltage electrode. 11 and 12 are arranged to be higher in the height direction.

また，中性極の母線１３の幹となる部分１３０から，複数の分岐線１３０１ａ，１３０１ｂが，前記幹となる部分１３０と略平行に，互いに反対の方向（接続される分岐開閉器の電源−負荷側方向）に一体に延出されている。これら分岐線１３０１ａ，１３０１ｂは，何れも分岐開閉器２に選択的に接続される分岐線である。 A plurality of branch lines 1301a and 1301b from the trunk portion 130 of the neutral pole bus 13 are substantially parallel to the trunk portion 130 in opposite directions (the power supply of the branch switch to be connected- It extends integrally in the load side direction). These branch lines 1301 a and 1301 b are both branch lines that are selectively connected to the branch switch 2.

また，後述するが，各極の３つの母線を組み合わせた場合における分岐線の位置関係を補足すると、次のように構成されている。 Further, as will be described later, if the positional relationship of branch lines in the case of combining three buses of each pole is supplemented, the configuration is as follows.

上側の列の分岐開閉器を例とすると、Ｌ１の電圧極の母線１１における分岐線と，Ｌ２の電圧極の母線１２における分岐線と、Ｎ極の母線１３における分岐線との内，分岐開閉器２と選択的に接続される分岐線１２０１ｂと１３０１ｂとの位置関係は，分岐開閉器の並設方向において，各々の分岐線１２０１ｂと１３０１ｂとが交互に，夫々の分岐線の中間に位置するように配設される。そして，各々の分岐線１２０１ｂと１３０１ｂは，前記前面視において、他方の電圧極の母線の幹となる部分まで突出し，前記前面側からの平面視において，分岐開閉器に共通に接続される分岐線１０３１ａ，１２０１ｂと略同じ長さに形成されている。 Taking the branch switch in the upper row as an example, the branch switch of the branch line in the bus 11 of the voltage pole of L1, the branch line in the bus 12 of the voltage pole of L2, and the branch line in the bus 13 of the N pole The branch lines 1201b and 1301b that are selectively connected to the device 2 are located in the middle of the respective branch lines alternately in the parallel arrangement direction of the branch switches. It is arranged as follows. Each of the branch lines 1201b and 1301b protrudes to the trunk portion of the other voltage electrode bus in the front view, and is connected in common to the branch switch in the plan view from the front side. 1031a and 1201b have substantially the same length.

次に，中性極の母線１３における分岐線１３０１ａと１３０１ｂとは，分岐開閉器の並設方向において，前記分岐線１２０１ｂ，１１０１ａと同じ位置に配設され，前記前面側からの平面視において，分岐線１１０１ａ，１２０１ｂと略同じ長さに形成されている。なお，中性極の母線１３の幹となる部分１３０は，電圧極の母線１１，１２よりも前記高さ方向において高くなるように配設されているため互いに干渉しない。 Next, branch lines 1301a and 1301b in the bus 13 of the neutral pole are arranged at the same position as the branch lines 1201b and 1101a in the parallel arrangement direction of the branch switches, and in a plan view from the front side, It is formed to have substantially the same length as the branch lines 1101a and 1201b. Since the trunk 130 of the neutral electrode bus 13 is disposed so as to be higher in the height direction than the voltage electrode buses 11 and 12, they do not interfere with each other.

即ち，図１における上側の列並びに下側の列の何れの側においても，分岐線のうち分岐開閉器２に選択的に接続される分岐線１１０１ａと１３０１ａ，並びに１１０１ｂと１３０１ｂは前記前面側からの平面視において，互いに重ならないように配設されている。 That is, on either side of the upper row and the lower row in FIG. 1, branch lines 1101a and 1301a and 1101b and 1301b that are selectively connected to the branch switch 2 among the branch lines are connected from the front side. Are arranged so as not to overlap each other in plan view.

また，前記分岐線１１０１ａと１３０１ａ，並びに１１０１ｂと１３０１ｂは夫々の高さを同一に設けて配設されている。また、前記一つの組となる分岐線を、分岐開閉器を差し込む方向から見た場合、上側の列においても、下側の列においても、常に右側に位置する分岐線がＮ極の分岐線となっており、視覚的に統一性がとれる構造となっている。 The branch lines 1101a and 1301a, and 1101b and 1301b are provided with the same height. Further, when the branch lines forming one set are viewed from the direction in which the branch switch is inserted, the branch line always located on the right side is the N-pole branch line in both the upper column and the lower column. It has a structure that can be visually unified.

次に，内部ユニット１００の組み立てについて図５乃至図７を用いて説明を行う。
まず，図５において，前記絶縁部材５にＬ１の電圧極の母線１１，Ｌ２の電圧極の母線１２を取付ける。絶縁部材５は，夫々母線を絶縁できるよう樹脂材料にて形成され，分岐回路数に応じて，母線の幹となる部分の長さに合わせて種々の大きさのものが用意される。 Next, assembly of the internal unit 100 will be described with reference to FIGS.
First, in FIG. 5, the bus 11 of the voltage electrode L1 and the bus 12 of the voltage electrode L2 are attached to the insulating member 5. The insulating member 5 is formed of a resin material so as to insulate the busbars, and various sizes are prepared according to the length of the main portion of the busbar according to the number of branch circuits.

絶縁部材５には，母線の配置が一義的に行われるよう，予め母線の両端部に設けられるねじ端子に対応するナットを嵌め込む凹み部５１１、５１２，５１３が母線取付台５の本体の両端部に設けられ，また，夫々の電圧極における前記立上がり部１１１，１２１に対応する凸部５１４，前記分岐線１１０１，１２０１を互いに絶縁する絶縁壁Ａ５１５，後述する絶縁壁６並びに中性極の母線１３をねじ止め固定するためのねじ止め穴５１６が設けられている。 The insulating member 5 has recesses 511, 512, and 513 into which nuts corresponding to screw terminals provided in advance at both ends of the bus bar are fitted in advance so that the bus bar is uniquely arranged. Insulating wall A515, insulating wall 6 to be described later, and neutral electrode busbars, which are provided at the respective portions and insulate convex portions 514, branch lines 1101, 1201 corresponding to rising portions 111, 121 at the respective voltage poles. A screw hole 516 for fixing 13 with a screw is provided.

次に，絶縁壁６に中性極の母線１３を取付ける。絶縁壁６には，中性極の母線１３の取付けが一義的に行われるよう，中性極の母線１３における分岐線１３０１ａ，１３０１ｂを避けて，中性極の母線本体を嵌めこむ嵌め込み部６１１が形成されている。また，絶縁壁６には，中性極の母線１３の分岐線１３０１ａ，１３０１ｂの一部を覆う壁部６１２と，電圧極の母線における分岐線１１０１ａ，１２０１ａを避けた窪み部６１３とが設けられており，中性極の母線と，電圧極の母線との絶縁が保たれるよう構成されている。 Next, the neutral electrode bus 13 is attached to the insulating wall 6. The insulating wall 6 is fitted with a fitting portion 611 for fitting the main body of the neutral pole while avoiding the branch lines 1301a and 1301b of the neutral pole bus 13 so that the neutral pole bus 13 can be uniquely attached. Is formed. Further, the insulating wall 6 is provided with a wall portion 612 that covers a part of the branch lines 1301a and 1301b of the neutral electrode bus 13 and a recess 613 that avoids the branch wires 1101a and 1201a in the voltage electrode bus. Therefore, the insulation between the neutral pole bus and the voltage pole bus is maintained.

次に，中性極の母線１３を取付けた絶縁壁６を，前記電圧極の母線を取付けた絶縁部材５に取付ける。このとき，中性極の母線１３を取付けた絶縁壁６を，前記電圧極の母線を取付けた絶縁部材５に前記高さ方向における上部から，前記窪み部５１３が概ね夫々の電圧極の母線の分岐線と重なるように落とし込むことで位置決めができる。そして，前記中性極の母線に設けられたねじ止め固定するための穴１３０にねじを差込み，絶縁部材５に設けられたねじ止め穴５１６にねじを締め込むことで取付が完了する。 Next, the insulating wall 6 to which the neutral electrode bus 13 is attached is attached to the insulating member 5 to which the voltage electrode bus is attached. At this time, from the upper part in the height direction to the insulating member 5 to which the neutral electrode bus bar 13 is attached, the recessed portion 513 is substantially connected to the bus bar of each voltage electrode. Positioning can be done by dropping it so that it overlaps the branch line. Then, the screw is inserted into the hole 130 for screwing and fixing provided on the bus bar of the neutral electrode, and the screw is screwed into the screwing hole 516 provided in the insulating member 5 to complete the mounting.

Ｌ１，Ｌ２の２つの電圧極の母線と，中性極の母線は、夫々絶縁壁６並びに絶縁壁Ａ５１５により互いに絶縁され，電気安全が保たれる。 The bus bars of the two voltage electrodes L1 and L2 and the bus bar of the neutral electrode are insulated from each other by the insulating wall 6 and the insulating wall A515, respectively, and electrical safety is maintained.

次に，各極の母線並びに絶縁壁６を取付けた絶縁部材５を，分岐開閉器の取付板３にねじ止め固定することにより取付ける。取付けは，該絶縁部材５の背面側に設けられたねじ止め用穴と分岐開閉器の取付板３に設けられたねじ止め用穴の位置を合わせて背面側からねじ締めすることにより取付けられる。 Next, the insulating member 5 to which the bus of each pole and the insulating wall 6 are attached is attached by screwing and fixing to the attachment plate 3 of the branch switch. The mounting is performed by matching the positions of the screwing holes provided on the back side of the insulating member 5 and the screwing holes provided on the mounting plate 3 of the branch switch, and screwing from the back side.

（母線側電圧測定部の構造）
次に、母線側電圧測定の構造について説明を行う。図２において、母線１１及び１２の一端部には母線側電圧測定部３１、３２が夫々設けられる。母線側電圧測定部３１、３２は、住宅用分電盤の前面側から電圧測定用のテストリードを当接可能なよう、テストリードの当接部３１０１、３２０１を前面側に向けるよう、折り曲げ加工された金具で形成されており、その取付部は母線にねじ２１、２２にてねじ止め固定される。 (Structure of bus side voltage measurement unit)
Next, the structure of the bus side voltage measurement will be described. In FIG. 2, bus-side voltage measuring units 31 and 32 are provided at one end portions of the buses 11 and 12, respectively. The bus-side voltage measuring units 31 and 32 are bent so that the test lead contact portions 3101 and 3201 face the front side so that the voltage measurement test leads can be contacted from the front side of the residential distribution board. The mounting portion is fixed to the bus bar with screws 21 and 22.

テストリード当接部３１０１、３２０１は、テストリードを当接させる際に、住宅用分電盤の前面側から当接させやすいよう、住宅用分電盤の前面側から臨んで一部が幅広面状に形成される。また、テストリードを当接させたまま保持可能とするテストリード脱落防止手段を備える。 The test lead contact portions 3101 and 3201 are partially widened from the front side of the residential distribution board so that the test leads can be easily contacted from the front side of the residential distribution board. It is formed in a shape. In addition, a test lead drop-off prevention means is provided that enables the test lead to be held in contact.

テストリード脱落防止手段は、テストリード当接部３１０１、３２０１にテストリードの棒端子を貫通可能に設けた孔部３１０１ａ、３２０１ａを設けて、前記テストリード当接部の背面と母線との角度を鋭角に設けることで構成している。前記テストリード当接部の背面と母線との成す角度は、テストリードの棒端子を前記孔部３１０１ａ、３２０１ａに差し込んだ時にテストリードが住宅用分電盤の前面側に滑り落ちてしまわないよう、好ましくは、約３０度〜約６０度程度に形成するとよい。 The test lead drop-off prevention means is provided with holes 3101a and 3201a provided in the test lead contact portions 3101 and 3201 so that the rod terminals of the test leads can be penetrated, and the angle between the back surface of the test lead contact portion and the bus bar is set. It is configured by providing an acute angle. The angle formed between the back surface of the test lead contact portion and the bus bar is such that the test lead does not slide down to the front side of the residential distribution board when the rod terminal of the test lead is inserted into the holes 3101a, 3201a. Preferably, it is formed at about 30 degrees to about 60 degrees.

言い換えると、テストリードの棒端子を前記孔部に差し込んで手を放した場合に、棒端子側から住宅用分電盤を見下ろした場合の俯角が鋭角になるよう構成し、より好ましくは該俯角が約３０度〜約６０度程度となるよう、一般的なテストリードの棒端子の直径（約２ｍｍ）に対してテストリード脱落防止手段の孔の直径を約３．４ｍｍ程度に形成するとよい。 In other words, when the rod terminal of the test lead is inserted into the hole and released, the depression angle when looking down the residential distribution board from the rod terminal side is configured to be an acute angle, more preferably the depression angle The diameter of the hole of the test lead drop-off preventing means is preferably about 3.4 mm with respect to the diameter (about 2 mm) of a general test lead bar terminal so as to be about 30 degrees to about 60 degrees.

次に、他の実施形態として、前記母線側電圧測定部に代えて設けられる接続バー側電圧測定部の構造について図１９乃至図２２を用いて説明を行う。図１９には、主開閉器１、取付板４、主開閉器１の二次側と母線１１乃至１３を接続する接続バー１１０、１２０、１３０、該接続バーを覆う接続バーカバー１４を示している。また、図２０には、接続バーカバー１４を説明のために取り外した図を示している。図２１には、図１９を前面側から臨んだ図を示している。図２２には、接続バー１１０、１２０、１３０を接続バーカバー１４に配設した図を示している。接続バーカバー１４は、各極の接続バーを絶縁保持するものである。なお、図１における母線側電圧測定部３１、３２は取り外した状態で使用する。 Next, as another embodiment, a structure of a connection bar side voltage measurement unit provided instead of the bus side voltage measurement unit will be described with reference to FIGS. 19 to 22. FIG. 19 shows the main switch 1, the mounting plate 4, the connection bars 110, 120, and 130 that connect the secondary side of the main switch 1 and the bus bars 11 to 13, and the connection bar cover 14 that covers the connection bar. Yes. FIG. 20 shows a view in which the connection bar cover 14 is removed for explanation. FIG. 21 shows a view of FIG. 19 from the front side. FIG. 22 shows a view in which the connection bars 110, 120, and 130 are arranged on the connection bar cover 14. The connection bar cover 14 insulates and holds the connection bar of each pole. Note that the bus-side voltage measurement units 31 and 32 in FIG. 1 are used in a detached state.

接続バー１１０は第一の電圧極であるＬ１、接続バー１２０は第二の電圧極であるＬ２、接続バー１３０は中性極であるＮである。各々の接続バーは、図１における母線１１乃至１３の端部１１ａ、１２ａ、１３ａに設けられた接続バー接続部にて母線に螺着される。このため、図２０において、接続バーの端部１１０ｌ、１２０ｌ、１３０ｌに設けられた接続部は、母線端部に設けられた前記接続バー接続部の前面側の高さに合わせて設けられ、中性極の接続部が最も前面側に位置するように配設されている。 The connection bar 110 is L1 which is a first voltage electrode, the connection bar 120 is L2 which is a second voltage electrode, and the connection bar 130 is N which is a neutral electrode. Each connection bar is screwed to the bus bar at the connection bar connection portion provided at the end portions 11a, 12a, 13a of the bus bars 11 to 13 in FIG. Therefore, in FIG. 20, the connection portions provided at the end portions 110l, 120l, and 130l of the connection bar are provided in accordance with the height of the front side of the connection bar connection portion provided at the end portion of the busbar. The connecting portion of the sex electrode is arranged so as to be located on the most front side.

接続バーは、各々の極が接触干渉せぬよう折り曲げ加工が成されている。
Ｌ１の接続バー１１０は、主開閉器との接続部１１０ａから主開
閉器１の負荷側方向に伸びた（１１０ｂ部）後、該方向に対して垂直な方向に折り曲げ加工され（１１０ｃ部）、さらに前記負荷側方向とは反対の方向に折り返し加工されている（１１０ｄ部）。そして主開閉器１の負荷側側面に沿う形で接続バーが伸び（１１０ｅ部）、そこから主開閉器１の電源側に折り曲げ加工されて（１１０ｆ）伸び（１１０ｇ部）、母線における接続バー接続部近傍で一旦前面側に折り曲げ加工され（１１０ｈ部）、接続バー側電圧測定部（１１０ｊ部）を形成すべく折り曲げ加工され（１１０ｉ部）、母線における接続バー接続部接続部へ向けて階段状に折り曲げ加工され（１１０ｋ）ている。 The connecting bar is bent so that each pole does not interfere with contact.
The connection bar 110 of L1 extends in the load side direction of the main switch 1 from the connection part 110a with the main switch (110b part), and then is bent in a direction perpendicular to the direction (110c part). Further, it is folded back in the direction opposite to the load side direction (110d portion). Then, the connection bar extends along the load side surface of the main switch 1 (110e portion), is bent to the power source side of the main switch 1 (110f) and extends (110g portion), and the connection bar connection at the busbar Folded to the front side in the vicinity of the part (110h part), bent to form the connecting bar side voltage measuring part (110j part) (110i part), and stepped toward the connecting bar connecting part connecting part in the bus (110k).

Ｌ２の接続バー１３０は、主開閉器との接続部１３０ａから主開
閉器１の負荷側方向に伸びた（１３０ｂ部）後、該方向に対して垂直な方向に折り曲げ加工され（１３０ｃ部）、さらに前記負荷側方向とは反対の方向に折り返し加工されている（１３０ｄ部）。そして主開閉器１の負荷側側面に沿う形で接続バーが伸び（１３０ｅ部）、そこから主開閉器１の電源側に折り曲げ加工されて（１３０ｆ）伸び（１３０ｇ部）、母線における接続バー接続部近傍で折り曲げ加工され（１３０ｊ部）、母線における接続バー接続部接続部へ向けて伸びている。 The connection bar 130 of L2 extends from the connection part 130a to the main switch in the load side direction of the main switch 1 (130b part), and is then bent in a direction perpendicular to the direction (130c part). Further, it is folded back in the direction opposite to the load side direction (130d portion). Then, the connection bar extends along the side of the load side of the main switch 1 (130e portion), and is then bent to the power source side of the main switch 1 (130f) and extended (130g portion) to connect the connection bar at the busbar. It is bent in the vicinity of the portion (130j portion) and extends toward the connecting portion of the bus bar connecting portion.

Ｌ３の接続バー１２０は、主開閉器との接続部１２０ａから主開
閉器１の負荷側方向に伸びた（１２０ｂ部）後、該方向に対して垂直な方向に折り曲げ加工され（１２０ｃ部）、さらに前記負荷側方向とは反対の方向に折り返し加工されている（１２０ｄ部）。そして主開閉器１の負荷側側面に沿う形で接続バーが伸び（１２０ｅ部）、そこから主開閉器１の電源側に折り曲げ加工されて（１２０ｆ）伸び（１２０ｇ部）、母線における接続バー接続部近傍で接続バー側電圧測定部（１２０ｊ部）を形成すべく折り曲げ加工され、母線における接続バー接続部接続部へ向けて階段状に折り曲げ加工され（１２０ｋ）ている。 The connection bar 120 of L3 extends from the connection part 120a to the main switch in the load side direction of the main switch 1 (120b part), and is then bent in a direction perpendicular to the direction (120c part). Further, it is folded back in the direction opposite to the load side direction (120d portion). Then, the connection bar extends along the side of the load side of the main switch 1 (120e portion), and is then bent to the power source side of the main switch 1 (120f) and stretched (120g portion). The connecting bar side voltage measuring part (120j part) is bent in the vicinity of the part, and is bent stepwise toward the connecting bar connecting part connecting part in the bus (120k).

ここで、Ｌ１、Ｌ２、Ｎの接続バーは、折り曲げ加工部（１１０ｃ、１２０ｃ、１３０ｃ）の前面側への長さを互いに違えて形成し、接続バー同士の接触干渉を回避している。
その一方で、接続バー側電圧測定部１１０ｊ、１２０ｊの前面側から見た高さを揃えるために、Ｌ１の接続バーにおいて一旦前面側に折り曲げ加工される部分（１１０ｈ部）の長さを調整して形成している。 Here, the connection bars of L1, L2, and N are formed with different lengths to the front side of the bent portions (110c, 120c, and 130c) to avoid contact interference between the connection bars.
On the other hand, in order to make the height seen from the front side of the connection bar side voltage measuring units 110j and 120j, the length of the part (110h part) that is once bent to the front side in the connection bar of L1 is adjusted. Formed.

接続バーカバー１４は、これら接続バーを外部から覆い、絶縁保持すべく、本体を樹脂形成している。接続バーカバー１４内側には、接続バーを各々絶縁保持する隔壁１４０５、１４０６が形成され、接続バーを装着した場合の抜け止めとなる支持爪１４０１、１４０２、１４０３、１４０４を、接続バーが電源側に伸びる部分（１１０ｇ、１２０ｇ、１３０ｇ）に設けている。 The connection bar cover 14 is formed of a resin body so as to cover these connection bars from the outside and keep them insulated. Partition walls 1405 and 1406 for insulating and holding the connection bars are formed inside the connection bar cover 14, and support claws 1401, 1402, 1403 and 1404 that prevent the connection bars from being attached when the connection bars are attached are connected to the power supply side. It is provided in the part (110g, 120g, 130g) which extends in the direction.

前記接続バー側電圧測定部となる部分（１１０ｊ、１２０ｊ）は、接続バーにおける最も前面側となるよう形成されている。作業者は前面側から電圧測定作業を行うため、他の部材よりも背面側に位置すると、作業性を損なうことが予想されるとともに、不用意に他の部材に接触することにより、電気事故が発生するおそれが懸念されるからである。このため、住宅用分電盤における内器ユニットにおいては、前記接続バー側電圧測定部が最も前面側に位置するように形成している。
The portions (110j, 120j) that serve as the connection bar side voltage measurement unit are formed to be on the most front side of the connection bar. Since the operator performs voltage measurement work from the front side, if it is located on the back side from other members, it is expected that the workability will be impaired, and inadvertent contact with other members will cause electrical accidents. This is because there is a concern that it may occur. For this reason, in the internal unit in the distribution board for houses, it forms so that the said connection bar side voltage measurement part may be located in the forefront side.

前記接続バー側電圧測定部として、接続バーカバー１４及び接続バー１１０、１２０に、テストリードを挿通し得るよう孔部を連通させて設けている。説明のために、接続バー側に設けられる孔部を第一の孔部１１１、１２１とし、接続バーカバー側に設けられる孔部を第二の孔部１４１ａ、１４２ａとする。 As the connection bar-side voltage measurement unit, a hole is provided in the connection bar cover 14 and the connection bars 110 and 120 so that the test leads can be inserted. For the sake of explanation, the holes provided on the connection bar side are referred to as first holes 111 and 121, and the holes provided on the connection bar cover side are referred to as second holes 141a and 142a.

これら孔部は、住宅用分電盤の壁面への取付時における天地方向を上下方向とした場合に、
第二の孔部の中心を第一の孔部の中心に対して上方向に偏らせて配設している。作業者がテストリードを連通させて挿入したときに、該テストリードが第一の孔部内面と第二の孔部内面とに係合されることにより、テストリードの脱落を防止するためである。より詳しくは、テストリードの先端部分が、第一の孔部内面上側に当接し、テストリードの根元部分が、第二の孔部内面下側に当接して、テストリードから手を放しても該テストリードの自重により夫々の孔部に係合される。 These holes, when the vertical direction is the vertical direction when mounting to the wall surface of the residential distribution board,
The center of the second hole is arranged so as to be biased upward with respect to the center of the first hole. This is to prevent the test lead from falling off by engaging the test lead with the first hole inner surface and the second hole inner surface when the operator inserts the test lead in communication. . More specifically, even if the tip portion of the test lead comes into contact with the inner surface of the first hole and the base portion of the test lead comes into contact with the lower surface of the inner surface of the second hole, the test lead is released. The test lead is engaged with each hole by its own weight.

また、該接続バー側電圧測定部は、前記母線側電圧測定部３１、３２と同様に、接続バー１１０、１２０、１３０のうち、電圧極の１１０及び１２０に設けている。 In addition, the connection bar side voltage measurement unit is provided at the voltage poles 110 and 120 of the connection bars 110, 120, and 130, similarly to the bus side voltage measurement units 31 and 32.

（分岐開閉器側電圧測定部の構造）
次に、図９、図１０を用いて、分岐開閉器側電圧測定部の構造について説明を行う。図９は、図３における下側の列の分岐開閉器を電源側端子の側からみた図である。 (Structure of branch switch side voltage measurement unit)
Next, the structure of the branch switch side voltage measuring unit will be described with reference to FIGS. 9 and 10. FIG. 9 is a view of the branch switches in the lower row in FIG. 3 as seen from the power supply side terminal side.

本住宅用分電盤に適用される分岐開閉器２は、図９に示すように、該分岐開閉器２を併設する方向を幅方向としたときに、該幅方向に分割するケース２０ａ及び２０ｂを重ね合わせて構成される略箱体形状の器体を有する。 As shown in FIG. 9, the branch switch 2 applied to the residential distribution board has cases 20 a and 20 b that are divided in the width direction when the direction in which the branch switch 2 is provided is the width direction. Has a substantially box-shaped container.

そして、該器体には、母線Ｌ１又はＮと選択的に接続されるプラグイン端子が備えられた電源側端子部２２Ｂと、母線Ｌ２と接続されるプラグイン端子が備えられた電源側端子２２Ａと、分岐開閉器２の負荷側に電源を供給するための各極の導体と接続される速結端子を用いて構成された負荷側端子部２３とが設けられ、これら電源側端子部２２Ａ、２２Ｂと、負荷側端子部２３との間を電気的に接続する各極の主導体と、該各極の主導体に介在し、電源側と負荷側を電気的に入切接続する固定接点と、該固定接点と各々接離自在に対向する可動接点を固着した可動接触子と、これら可動接触子を開閉駆動する開閉機構と、該開閉機構とリンクにより接続され器体の外部から開閉機構を操作して、電路を入切操作する第一の操作部となる操作ハンドル２４とが配設されている。 The container body has a power supply side terminal portion 22B provided with a plug-in terminal selectively connected to the bus L1 or N, and a power supply side terminal 22A provided with a plug-in terminal connected to the bus L2. And a load-side terminal portion 23 configured by using quick connection terminals connected to conductors of respective poles for supplying power to the load side of the branch switch 2, these power-side terminal portions 22A, 22B and the main conductor of each pole that electrically connects between the load side terminal portion 23, and a fixed contact that is interposed in the main conductor of each pole and that electrically connects and disconnects the power supply side and the load side A movable contact fixed to each of the fixed contacts so as to be able to come in contact with and away from the fixed contact; an opening / closing mechanism for opening and closing the movable contact; and an opening / closing mechanism connected to the opening / closing mechanism by a link. Operation to be the first operation unit to turn on and off the electric circuit And bundle 24 is disposed.

前記第一の操作部となる操作ハンドル２４が設けられた面を器体の前面ａとした場合、該前面には、該前面ａ側から前記電源側端子部２２Ｂを臨む連通孔２１が設けられている。該連通孔２１は、電源端子部２２Ｂが前記分岐線Ｎ又はＬ１と接続される夫々の位置において、２箇所に設けられている。 When the surface on which the operation handle 24 serving as the first operation portion is provided is the front surface a of the body, the front surface is provided with a communication hole 21 that faces the power supply side terminal portion 22B from the front surface a side. ing. The communication holes 21 are provided at two locations in each position where the power terminal portion 22B is connected to the branch line N or L1.

次に、電源側端子部２２Ａ、２２Ｂについて説明を行う。
前記電源側端子部２２Ａ、２２Ｂは、
前記前面ａに対して、分電盤への取付面となる面を背面ｂとし、該前面ａと該背面ｂとに相隣り合う面を側面ｃとしたときに、器体の長手方向における側面ｃの一端に、ケース２０ａ、２０ｂの間に挟み込まれるように設けられている。 Next, the power supply side terminal portions 22A and 22B will be described.
The power supply side terminal portions 22A and 22B are
The side surface in the longitudinal direction of the container body is defined as a back surface b which is a mounting surface to the distribution board with respect to the front surface a, and a side surface c adjacent to the front surface a and the back surface b. It is provided at one end of c so as to be sandwiched between cases 20a and 20b.

電源側端子部のうち、２２Ａは器体に固定されて配設される端子部（固定端子部という）で、下側の列に配設される場合にはＬ２の分岐線に接続され、２２Ｂは前記分岐線Ｌ１又はＮを選択的に接続するため器体内を前記幅方向において、一方の側面寄りと、他方の側面寄りの２箇所の間で連続的に往復移動が行えるよう、器体の側面に設けた窪み部分に配設される端子部（選択端子部という）である。 Among the power supply side terminal portions, 22A is a terminal portion (referred to as a fixed terminal portion) disposed and fixed to the body, and when disposed in the lower row, it is connected to the branch line of L2, 22B Since the branch line L1 or N is selectively connected, the container body is reciprocally moved in the width direction so as to continuously reciprocate between one side and the other side. It is a terminal part (it is called a selection terminal part) arrange | positioned at the hollow part provided in the side surface.

なお、図３において、上側の列の分岐開閉器と接続される分岐線の配置は、下側の列における母線Ｌ２に相当する場所には母線Ｌ１の分岐線が設けられ、下側の列における母線Ｎ、Ｌ１に相当する場所には母線Ｎ、Ｌ２の分岐線が設けられる配置となっており、上側の列に配設される分岐開閉器においては、前記固定端子部は母線Ｌ１の分岐線に接続され、前記選択端子部は母線Ｎ又はＬ２の分岐線と選択的に接続される。 In FIG. 3, the branch lines connected to the branch switches in the upper column are arranged such that a branch line of the bus L1 is provided at a location corresponding to the bus L2 in the lower column, The branch lines of the bus lines N and L2 are disposed at locations corresponding to the bus lines N and L1, and in the branch switch disposed in the upper row, the fixed terminal portion is the branch line of the bus line L1. The selection terminal portion is selectively connected to a branch line of the bus N or L2.

（選択端子部の構造）
分岐開閉器２の器体の電源側には、前記固定されて配設される固定端子部２２Ａの位置、並びに移動可能に設けられる選択端子部２２Ｂのそれぞれの位置に対応するよう、分電盤内に予め３本の母線Ｌ１、Ｌ２、Ｎの接続部が配置されている。
図４の場合、前記固定端子部２２Ａは分岐線Ｌ２と接続され、前記選択端子部２２Ｂは、図９の位置の場合は分岐線Ｎと接続され、他方の位置の場合は母線Ｌ１と接続される。 (Selection terminal structure)
On the power source side of the body of the branch switch 2, a distribution board is provided so as to correspond to the position of the fixed terminal portion 22A that is fixedly disposed and the position of the selection terminal portion 22B that is movably provided. The connection part of three bus-bar L1, L2, N is previously arrange | positioned in the inside.
In the case of FIG. 4, the fixed terminal portion 22A is connected to the branch line L2, and the selection terminal portion 22B is connected to the branch line N in the position of FIG. 9, and is connected to the bus line L1 in the other position. The

選択端子部２２Ｂが母線Ｌ１と接続される場合には、分岐開閉器２には２００Ｖの電圧が印加され、選択端子部２２Ｂが分岐線Ｎと接続される場合には、分岐開閉器２には１００Ｖの電圧が印加される。 When the selection terminal portion 22B is connected to the bus L1, a voltage of 200 V is applied to the branch switch 2, and when the selection terminal portion 22B is connected to the branch line N, the branch switch 2 A voltage of 100V is applied.

図１０には、前記選択端子部２２Ｂと、該選択端子部２２Ｂに収納される刃受２２Ｂ３を示している。前記固定端子部２２Ａ並びに選択端子部２２Ｂは、その内部に、母線と接続するための端子として、断面が略徳利状の略コの字状の先部を絞った形状に成形された刃受であるプラグイン端子２２Ｂ３を収納している。該刃受２２Ｂ３は前記絞った形状の部分で母線の分岐線を挟み込み、負荷側に電源を供給する。 FIG. 10 shows the selection terminal portion 22B and the blade receiver 22B3 accommodated in the selection terminal portion 22B. The fixed terminal portion 22A and the selection terminal portion 22B are blade holders formed into a shape in which a substantially U-shaped tip portion having a substantially cross-sectional shape is narrowed as a terminal for connecting to the bus bar. A certain plug-in terminal 22B3 is accommodated. The blade receiver 22B3 sandwiches the branch line of the bus at the narrowed portion and supplies power to the load side.

選択端子部２２Ｂは、その外郭が刃受２２Ｂ３とは電気的に接続されていない非充電部として構成されている。外郭の前面側には、前記器体に設けられた連通孔２１に対応した孔２２Ｂ４が設けられている。
選択端子部２２Ｂを、器体の幅方向において、一方の側面寄りと、他方の側面寄りの、それぞれの接続位置に移動させた場合には、片方の連通孔２１と孔２２Ｂ４とが、それぞれつながり、分岐開閉器の前面側からテストリードの棒端子を差し込み可能となる。 The selection terminal portion 22B is configured as a non-charging portion whose outer shell is not electrically connected to the blade receiver 22B3. A hole 22B4 corresponding to the communication hole 21 provided in the container is provided on the front side of the outer shell.
When the selection terminal portion 22B is moved to the connection positions on one side and the other side in the width direction of the body, the one communication hole 21 and the hole 22B4 are connected to each other. The lead terminal of the test lead can be inserted from the front side of the branch switch.

（選択端子部の動作構造について）
選択端子部２２Ｂを器体の幅方向に往復移動させる第二の操作部２５について、図１０、図１１を用いて説明を行う。 (About the operation structure of the selected terminal)
The second operation unit 25 that reciprocates the selection terminal unit 22B in the width direction of the container will be described with reference to FIGS.

まず、選択端子部２２Ｂの前面ａ側には、複数の歯を設けたラック２２Ｂ１を形成しており、第二の操作部２５の操作を後述する移動方向反転手段を介して選択端子部２２Ｂに伝達する役割を果たす。また、外郭の背面側には、幅方向に長形状のリブ２２Ｂ２が設けられており、このリブ２２Ｂ２が、器体側に設けられた溝部２１ｃと嵌め合わされることにより、選択端子部２２Ｂが幅方向に往復移動する際のガイド部として働く。 First, a rack 22B1 provided with a plurality of teeth is formed on the front surface a side of the selection terminal portion 22B, and the operation of the second operation portion 25 is performed on the selection terminal portion 22B via a moving direction reversing means described later. Play a role to communicate. Further, a long rib 22B2 is provided in the width direction on the back side of the outer shell, and the rib 22B2 is fitted with a groove portion 21c provided on the body side so that the selection terminal portion 22B is in the width direction. Acts as a guide when reciprocating.

前記器体の前面側には、前記選択端子部２２Ｂの器体の幅方向に往復移動させるための第二の操作部２５が設けられている。該第二の操作部２５は、器体の幅方向における長さの略半分の大きさに形成された長四角形状のベースと、該ベースの前面側に設けられた把持部２５ａと、ベースの背面側に設けられた複数の歯を設けたラック２５ｂとを備えている。ラック２５ｂは、ベースに形成した長形状のリブ２５ｂ１の端部に、該リブ２５ｂ１よりも幅広状に形成されており、第二の操作部２５を器体に設けられた開口部２１ｂ３に嵌め込み取付けた際に、幅方向に移動させるためのガイド部として働くとともに、前面側への抜止めとして働く。 On the front side of the container, a second operation section 25 is provided for reciprocating the selection terminal section 22B in the width direction of the container. The second operation unit 25 includes a long rectangular base formed to be approximately half the length in the width direction of the container, a gripping unit 25a provided on the front side of the base, And a rack 25b provided with a plurality of teeth provided on the back side. The rack 25b is formed at the end of the long rib 25b1 formed on the base so as to be wider than the rib 25b1, and the second operation portion 25 is fitted into the opening 21b3 provided in the body. When working, it acts as a guide part for moving in the width direction and also serves as a retaining to the front side.

前記第二の操作部２５は、器体の幅方向の移動に際し、器体における一方の側面寄りと、他方の側面寄りの２箇所の間で連続的に往復移動を行う。そして、それぞれの一方の側面寄りの位置、及び他方の側面寄りの位置において、前記ベースにより、該ベースの背面となる部分に位置する連通孔２１、即ち、選択端子部２２Ｂが位置しない側における器体の前面ａ側に設けられた連通孔２１を隠蔽する。 When the second operation unit 25 moves in the width direction of the container, the second operation unit 25 continuously reciprocates between two positions near one side and the other side of the container. Then, at each of the positions near one side surface and the other side surface, the communication hole 21 located in the portion serving as the back surface of the base by the base, that is, the device on the side where the selection terminal portion 22B is not located. The communication hole 21 provided on the front surface a side of the body is concealed.

このため、器体の前面側からは、選択端子部２２Ｂが位置しない側の連通孔は視認できず、選択端子部２２Ｂが位置する側の連通孔が視認可能となる。 For this reason, from the front side of the body, the communication hole on the side where the selection terminal portion 22B is not visible cannot be seen, and the communication hole on the side where the selection terminal portion 22B is located becomes visible.

このため、回路遮断器への供給電圧がいくらであるのか確認する場合には、器体の前面側にて視認可能な側の連通孔２１に前記テストリードの棒端子を差込むことにより行え、不用な側の連通孔２１は隠蔽されるため誤った連通孔に前記棒端子を差込むことを防ぐことができる。 For this reason, when confirming how much the supply voltage to the circuit breaker is, it can be done by inserting the bar terminal of the test lead into the communication hole 21 on the side visible on the front side of the body, Since the communication hole 21 on the unnecessary side is concealed, it is possible to prevent the rod terminal from being inserted into an incorrect communication hole.

また、前記ベースの背面側で、分岐開閉器２の器体の前面側には、器体の幅方向に亘って、選択端子部２２Ｂの分岐線との接続位置に応じて分岐開閉器２に供給される電圧値を表示する電圧表示部２７が設けられている。 Further, on the back side of the base, on the front side of the body of the branch switch 2, the branch switch 2 is connected to the branch line of the selection terminal portion 22B over the width direction of the body. A voltage display unit 27 for displaying the supplied voltage value is provided.

器体の幅方向に対して、略中央から一方の側面寄りには第一の供給電圧である１００Ｖの文字が表示され、略中央から他方の側面寄りには第二の供給電圧である２００Ｖの文字が表示される。前述した不用な連通孔が隠蔽されるのと同様、前記ベースの背面となる部分に位置する電圧表示部２７は、該ベースに隠蔽されて前面側からは視認できず、ベースに隠蔽されない部分に位置する電圧表示部は前面側から視認可能となる。このため、分岐開閉器への予定される供給電圧が、選択端子部２２Ｂの夫々の位置において、予め的確に表示できる。 With respect to the width direction of the container, a character of 100V, which is the first supply voltage, is displayed near one side from approximately the center, and a voltage of 200V, which is the second supply voltage, is displayed near the other side from approximately the center. Characters are displayed. Similarly to the case where the above-described unnecessary communication hole is concealed, the voltage display unit 27 located in the portion serving as the back surface of the base is concealed by the base and is not visible from the front side, and is not concealed by the base. The voltage display part located becomes visible from the front side. For this reason, the planned supply voltage to the branch switch can be accurately displayed in advance at each position of the selection terminal portion 22B.

前述の連通孔がベースにより隠蔽される作用と相まって、分岐開閉器に供給される予定の電圧値の把握や実際の電圧測定確認作業が分岐開閉器の前面側から行いやすく、作業性に優れた電圧測定のための構造を提供することができる。 Combined with the above-described effect that the communication hole is concealed by the base, it is easy to grasp the voltage value to be supplied to the branch switch and to confirm the actual voltage measurement from the front side of the branch switch. A structure for voltage measurement can be provided.

次に、第二の操作部２５と選択端子部２２Ｂとを連動させる前述の移動方向反転手段について図１２、図１３、図１４を用いて説明を行う。 Next, the moving direction reversing means for interlocking the second operation unit 25 and the selection terminal unit 22B will be described with reference to FIGS.

移動方向反転手段は、前記第二の操作部２５を移動させる方向とは反対方向に選択端子部２２Ｂを移動させるものである。即ち、図１４において、前記第二の操作部２５を（ａ）の位置から（ｃ）の位置に移動させる場合には、選択端子部２２Ｂは第二の操作部とは反対方向に移動する。
本実施形態では、前記移動方向反転手段として、ピニオン２６を用いた例について説明を行う。 The moving direction reversing means moves the selection terminal portion 22B in a direction opposite to the direction in which the second operation portion 25 is moved. That is, in FIG. 14, when the second operation part 25 is moved from the position (a) to the position (c), the selection terminal part 22B moves in the opposite direction to the second operation part.
In the present embodiment, an example in which a pinion 26 is used as the moving direction inverting means will be described.

該ピニオン２６は、軸２６ａの周囲に複数の歯を設けて形成されている。該歯は、前記第二の操作部２５に設けられたラック２５ｂ、並びに前記選択端子部２２Ｂに設けられたラック２２Ｂ１と噛み合うように、記第二の操作部２５に設けられたラック２５ｂと前記選択端子部２２Ｂに設けられたラック２２Ｂ１との間に位置するよう配設される。前記ピニオン２６は、回路遮断器の器体の前面寄りに、該器体の一部を凹ませて形成した軸受部２１ｄに軸２６ａが枢支されて配設される。 The pinion 26 is formed by providing a plurality of teeth around the shaft 26a. The teeth are engaged with the rack 25b provided in the second operation portion 25 so as to mesh with the rack 25b provided in the second operation portion 25 and the rack 22B1 provided in the selection terminal portion 22B. It arrange | positions so that it may be located between rack 22B1 provided in selection terminal part 22B. The pinion 26 is disposed near the front surface of the circuit breaker body, with a shaft 26a pivotally supported by a bearing portion 21d formed by recessing a part of the body.

図１３に、これら第二の操作部２５とピニオン２６と選択端子部２２Ｂとの器体への配置状態を一部断面にて示した。
第二の操作部２５と選択端子部２２ｂとの間にピニオン２６が配置され、それぞれのラック２５ｂ、２２Ｂ１と、器体により軸２６ａを回動自在に枢支されたピニオンの歯が噛み合う。 FIG. 13 shows a partial cross-sectional view of the arrangement of the second operation unit 25, the pinion 26, and the selection terminal unit 22B on the container.
A pinion 26 is disposed between the second operation portion 25 and the selection terminal portion 22b, and the teeth of the pinions pivotally supported by the racks 25b and 22B1 so that the shaft 26a is pivotable by the container are engaged.

次に、第二の操作部２５を操作して、選択端子部２２Ｂの位置を移動する場合について一部を断面にて示した図１３、図１４を用いて説明を行う。 Next, the case where the position of the selection terminal portion 22B is moved by operating the second operation portion 25 will be described with reference to FIGS.

例として、図１４（ａ）、（ｂ）は、固定端子部２２Ａには母線Ｌ２が接続され、選択端子部２２Ｂには母線Ｎと接続される場合を示し、図１４（ｃ）（ｄ）は、固定端子部２２Ａには母線Ｌ２が接続され、選択端子部２２Ｂには母線Ｌ１と接続される場合を示す。 As an example, FIGS. 14A and 14B show a case where the bus L2 is connected to the fixed terminal portion 22A and the bus N is connected to the selection terminal portion 22B, and FIGS. Shows a case where the bus L2 is connected to the fixed terminal portion 22A and the bus L1 is connected to the selection terminal portion 22B.

まず、図１４（ａ）、（ｂ）は、固定端子部２２Ａには母線Ｌ２が接続され、選択端子部２２Ｂには母線Ｎと接続される場合であるから、回路遮断器に供給される電圧値は１００Ｖとなる。選択端子部２２Ｂの位置する前面側においては、選択端子部２２Ｂが位置しない側の連通孔２１ａ４並びに電圧表示部２７の一部は第二の操作部２５のベースにより隠蔽され、選択端子部２２Ｂが位置する側の連通孔２１ｂ４並びに電圧表示部２７の一部が現れている。この場合の電圧表示部２７は１００Ｖの文字が表示される。 First, FIGS. 14A and 14B show a case where the bus L2 is connected to the fixed terminal portion 22A and the bus N is connected to the selection terminal portion 22B, and thus the voltage supplied to the circuit breaker. The value is 100V. On the front side where the selection terminal portion 22B is located, the communication hole 21a4 on the side where the selection terminal portion 22B is not located and a part of the voltage display portion 27 are concealed by the base of the second operation portion 25, and the selection terminal portion 22B is The communication hole 21b4 on the side where it is located and a part of the voltage display part 27 appear. In this case, the voltage display unit 27 displays 100V characters.

次に、この状態から、図中において第二の操作部２５を初期位置から他方の側面側にスライド移動させ始めると、該第二の操作部２５の背面側に設けられたラック２５ｂとピニオン２６の歯の噛み合いにより、ピニオンは図中において反時計回りに回転を始める。同時に、ピニオン２６の歯と噛み合っている選択端子部２２Ｂの前面側に設けられたラック２２Ｂ１には力が伝達され、前記第二の操作部２５をスライド移動させる方向とは反対の方向に移動を始める。ラックとピニオンの歯は１対１で対応しているため、第二の操作部２５の移動量と選択端子部２２Ｂの移動量は同じであり、第二の操作部２５を他方の側面側に移動させ終えた場合には、選択端子部２２Ｂも初期位置から他方の側面側に移動し終える（図１４（ｃ）、（ｄ））。 Next, from this state, when the second operating portion 25 is started to slide from the initial position to the other side surface in the drawing, a rack 25b and a pinion 26 provided on the back side of the second operating portion 25 are shown. The pinion begins to rotate counterclockwise in the figure due to the meshing of the teeth. At the same time, the force is transmitted to the rack 22B1 provided on the front side of the selection terminal portion 22B meshing with the teeth of the pinion 26, and the second operation portion 25 is moved in the direction opposite to the sliding direction. start. Since the rack and pinion teeth have a one-to-one correspondence, the amount of movement of the second operation unit 25 and the amount of movement of the selection terminal unit 22B are the same, and the second operation unit 25 is moved to the other side surface. When the movement is completed, the selection terminal portion 22B is also moved from the initial position to the other side surface (FIGS. 14C and 14D).

この状態では、固定端子部２２Ａには母線Ｌ２が接続され、選択端子部２２Ｂには母線Ｌ１と接続される場合であるから、回路遮断器に供給される電圧値は２００Ｖとなる。選択端子部２２Ｂの位置する前面側においては、選択端子部２２Ｂが位置しない側の連通孔２１ｂ４並びに電圧表示部２７の一部は第二の操作部２５のベースにより隠蔽され、選択端子部２２Ｂが位置する側の連通孔２１ａ４並びに電圧表示部２７の一部が現れている。この場合の電圧表示部２７は２００Ｖの文字が表示される。 In this state, since the bus L2 is connected to the fixed terminal portion 22A and the bus L1 is connected to the selection terminal portion 22B, the voltage value supplied to the circuit breaker is 200V. On the front side where the selection terminal portion 22B is located, the communication hole 21b4 on the side where the selection terminal portion 22B is not located and a part of the voltage display portion 27 are concealed by the base of the second operation portion 25, and the selection terminal portion 22B is The communication hole 21a4 on the side where it is located and a part of the voltage display part 27 appear. In this case, the voltage display unit 27 displays 200V characters.

このように第二の操作部２５をスライド移動させる方向とは反対の方向に選択端子部２２Ｂを移動させるよう構成しているから、選択端子部２２Ｂを母線と接続する位置において、常にその前面側に、分岐開閉器に供給される予定の電圧値の表示と、選択端子部２２Ｂが位置する側の連通孔が露出される。 Since the selection terminal portion 22B is moved in the direction opposite to the direction in which the second operation portion 25 is slid, the selection terminal portion 22B is always on the front side at the position where the selection terminal portion 22B is connected to the bus. In addition, the display of the voltage value scheduled to be supplied to the branch switch and the communication hole on the side where the selection terminal portion 22B is located are exposed.

選択端子部が位置しない側に設けられて、分岐開閉器に供給される予定の電圧値の表示部と、連通孔は前記第二の操作部２５のベースの背面側に位置して隠蔽されるよう構成しているから、器体の前面側から端子部を臨んだ場合には、プラグイン端子の位置と器体の前面に露出する連通孔と電圧表示部とが連携することにより、分岐開閉器と母線とを選択的に接続する前や、分岐開閉器と母線を接続した後であっても、視覚的に、どの分岐開閉器がどの分岐線を選択して接続されているか、又、供給される予定の電圧値を、負荷回路に実際に供給する前に把握でき、電圧の測定作業を直接的になおかつ容易に行いやすい。 Provided on the side where the selection terminal portion is not located, the display portion for the voltage value to be supplied to the branch switch and the communication hole are located on the back side of the base of the second operation portion 25 and are concealed. Therefore, when the terminal part is faced from the front side of the device body, the position of the plug-in terminal, the communication hole exposed on the front surface of the device body, and the voltage display unit cooperate to open and close the branch Which branch switch is selected and connected visually, even before the switch and bus are selectively connected, and after the branch switch and bus are connected, The voltage value to be supplied can be grasped before actually being supplied to the load circuit, and the voltage measurement operation can be easily and directly performed.

また、器体の端子部における前面側の、第二の操作部に隠蔽されない略全面を電圧表示部として用いることができるため、供給が予定される電圧値を大きく表示することができ、視認性がよくなり、高所、狭い場所などで作業をする者にとって電圧測定作業の誤りを生じさせにくく、電圧測定作業性が高い構造を提供することができる。 In addition, since almost the entire surface of the terminal portion of the body that is not concealed by the second operation unit can be used as the voltage display unit, the voltage value that is expected to be supplied can be displayed large, and the visibility Therefore, it is possible to provide a structure that is less likely to cause an error in voltage measurement work for a person working in a high place or a narrow place and has high voltage measurement workability.

なお、選択端子部の刃受と分岐開閉器の内部の主導体とはより線を用いて接続されており、前記幅方向に連続的に移動するときの妨げにならないよう、移動量分の余裕を持たせた長さとしている。 Note that the blade holder of the selection terminal part and the main conductor inside the branch switch are connected using a stranded wire, so that there is a margin for the amount of movement so as not to hinder continuous movement in the width direction. It is said that it has a length.

また、前記電圧表示部における電圧の表示は、文字による表示の他、器体の幅方向における略中央部を境に色分けを行ったり、その他接続する母線（分岐線）の種類を記載することにより行ってもよい。色分けは、給電される電圧を識別するために赤と白、赤と黒というように、各々で色相を違えたり、また、明度、彩度を違えて構成するとよい。また、母線の種類をＬ１、Ｎというように文字で表示したり、記号を用いて表示し、色分けと文字と記号による表示を組み合わせて行ってもよい。 Moreover, the voltage display in the voltage display unit is not only displayed by characters, but also by color-coding at a substantially central part in the width direction of the body, and by describing the type of bus (branch line) to be connected. You may go. In order to identify the voltage to be supplied, the color classification may be configured such that red and white, red and black have different hues, and lightness and saturation are different. Also, the bus type may be displayed as characters such as L1 and N, or may be displayed using symbols, and color coding and display using characters and symbols may be combined.

また、図１４の２８で示したように、器体の電源側端子部の前面側に、第二の操作部２５を幅方向に移動させる場合に、該第二の操作部２５の背面側と当接し、弾性的に乗り越え可能な程度に凸部２８を設けて構成してもよい。これにより、第二の操作部２５を一方の位置から他方の位置に移動させるときに、前記凸部２８を乗り越えることにより適度なクリック感が得られ、作業者は、視覚的及び触覚的に選択端子部２２Ｂを切替えたことを認識することができる。 Further, as shown by 28 in FIG. 14, when the second operation unit 25 is moved in the width direction on the front side of the power supply side terminal unit of the container, the back side of the second operation unit 25 The protrusions 28 may be provided so as to contact and elastically get over. Accordingly, when the second operation unit 25 is moved from one position to the other position, an appropriate click feeling can be obtained by overcoming the convex portion 28, and the operator can select visually and tactilely. It can be recognized that the terminal portion 22B has been switched.

（供給電源電圧の測定作業について）
分岐開閉器２に供給される電源電圧を測定する場合には、分岐開閉器２を母線に接続した後において、前記操作ハンドル２４をオフにした状態で、電圧測定器のテストリードの棒端子の一方を、器体の前面ａ側から選択端子部２２Ｂが位置する側の連通孔２１に差込み、該選択端子部２２Ｂに内包した刃受であるプラグイン端子２２Ｂ３又は該プラグイン端子が接続される分岐線と当接させ、前記テストリードの他方の棒端子を、前記母線側電圧測定部３１、３２に当接、又は接続バー側電圧測定部１４１、１４２に挿入することで、分岐開閉器の負荷側には電源を供給させずに、分岐開閉器に供給される電圧を測定することができる。 (About the measurement of supply voltage)
When the power supply voltage supplied to the branch switch 2 is measured, after the branch switch 2 is connected to the bus, the operation handle 24 is turned off and the test lead bar terminal of the voltage measuring instrument is turned off. One side is inserted into the communication hole 21 on the side where the selection terminal portion 22B is located from the front surface a side of the container, and the plug-in terminal 22B3 or the plug-in terminal which is a blade holder included in the selection terminal portion 22B is connected. By making contact with the branch line, the other bar terminal of the test lead is brought into contact with the bus side voltage measurement units 31 and 32 or inserted into the connection bar side voltage measurement units 141 and 142, so that the branch switch The voltage supplied to the branch switch can be measured without supplying power to the load side.

このとき、母線側電圧測定部、接続バー側電圧測定部には、テストリード脱落防止手段を備えているから、テストリードから手を離しても該テストリードは母線側電圧測定部、接続バー側電圧測定部から脱落せず、作業性良く電圧測定作業を行うことが可能となる。 At this time, since the bus side voltage measuring unit and the connection bar side voltage measuring unit are provided with a test lead drop prevention means, the test lead is connected to the bus side voltage measuring unit and the connection bar side even if the test lead is released. It is possible to perform voltage measurement work with good workability without dropping from the voltage measurement unit.

上側の列の分岐開閉器に対して電源電圧の測定作業を行うときには、母線側電圧測定部３１又は接続バー側電圧測定部１４１を利用し、一方のテストリードの棒端子を該母線側電圧測定部３１又は接続バー側電圧測定部１４１に保持させて、他方の棒端子を分岐開閉器側電圧測定部２０４、２０３、２０２、２０１に順々に当接させていき、続いて、下側の列の分岐開閉器に対して電圧の測定作業を行うときには、前記母線側電圧測定部３１又は接続バー側電圧測定部１４１に保持させた棒端子を取り外して、母線側電圧測定部３２又は接続バー側電圧測定部１４２に保持させたうえで、他方の棒端子を分岐開閉器側電圧測定部２０８、２０７、２０６、２０５に順々に当接させていき、電圧の測定作業を行うとよい。 When the power supply voltage is measured for the branch switches in the upper row, the bus side voltage measuring unit 31 or the connection bar side voltage measuring unit 141 is used, and the bar terminal of one test lead is measured for the bus side voltage. 31 or the connecting bar side voltage measuring unit 141, and the other bar terminal is brought into contact with the branch switch side voltage measuring units 204, 203, 202, 201 in order, and then the lower side terminal When performing a voltage measurement operation on the branch switch in the row, the bar terminal held by the bus side voltage measurement unit 31 or the connection bar side voltage measurement unit 141 is removed, and the bus side voltage measurement unit 32 or the connection bar is removed. The voltage measurement operation may be performed by holding the other voltage terminal in contact with the branch switch-side voltage measurement units 208, 207, 206, and 205 in order after being held by the side voltage measurement unit 142.

このように、分岐開閉器に供給される電源電圧がいくらであるのかを測定する場合には、まずはハンドル２４をオフ側に操作したうえで、器体の前面側に露出している連通孔に対して、電圧測定装置のテストリードの棒端子を差込む、即ち、
前記テストリードの棒端子の一方を、母線側電圧測定部又は接続バー側電圧測定部のテストリード脱落防止手段に保持させ、テストリードの棒端子の他方を、器体の前面ａ側からみて露出している側の連通孔に差込むことにより該選択端子部２２Ｂに内包したプラグイン端子２２Ｂ３又は該端子２２Ｂ３に接続される分岐線と当接させて、分岐開閉器の負荷側には電源を供給させずに、分岐開閉器に供給される電圧を測定でき、電圧測定にあたり必要のない連通孔は前面側には露出しないから、作業者は、露出している連通孔に対しテストリード測定を行えばよい。 As described above, when measuring the power supply voltage supplied to the branch switch, first, the handle 24 is operated to the off side, and then the communication hole exposed on the front side of the body is opened. On the other hand, the rod terminal of the test lead of the voltage measuring device is inserted, that is,
One of the test lead bar terminals is held by the test lead drop-off prevention means of the bus side voltage measuring unit or the connection bar side voltage measuring unit, and the other of the test lead bar terminals is exposed when viewed from the front side a of the body. By inserting it into the communication hole on the side where it is connected, it is brought into contact with the plug-in terminal 22B3 included in the selection terminal portion 22B or the branch line connected to the terminal 22B3, and a power source is connected to the load side of the branch switch Without being supplied, the voltage supplied to the branch switch can be measured, and communication holes that are not necessary for voltage measurement are not exposed on the front side, so the operator can measure the test leads for the exposed communication holes. Just do it.

このため、電源電圧測定の誤りを起こしにくく、また、電圧表示部２７により、供給される予定の電圧値が表示されるから、前記電圧測定装置による測定結果と、電圧表示が異なっていた場合には、何らかの異常が発生していることが容易に認識でき、早期に異常の解決に向けて取り組むことができる。また、本実施形態においては、個々の回路遮断器毎に電圧測定に加えて相間の絶縁測定を行うこともできる。 For this reason, it is difficult to cause an error in power supply voltage measurement, and since the voltage value to be supplied is displayed by the voltage display unit 27, the measurement result from the voltage measuring device is different from the voltage display. Can easily recognize that some abnormality has occurred, and can work toward resolution of the abnormality at an early stage. Moreover, in this embodiment, in addition to voltage measurement for each circuit breaker, insulation measurement between phases can be performed.

尚、本発明は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲で種々の変更が可能である。   In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

例えば、母線側電圧測定部又は接続バー側電圧測定部におけるテストリード脱落防止手段として、単純な丸孔の他、孔をだるま型に形成し、各々の孔の大きさを変えることにより、テストリードの棒端子がより引っ掛かりやすくなるよう構成してもよい。より詳しくは、下側の孔に対して上側の孔を小さく形成し、棒端子が引っ掛かりやすくなるよう構成してもよい。   For example, as a test lead dropout prevention means in the bus side voltage measurement unit or connection bar side voltage measurement unit, in addition to a simple round hole, a hole is formed in a daruma-shaped shape, and the size of each hole is changed to change the test lead. You may comprise so that a bar terminal of this may become caught easily. More specifically, the upper hole may be formed smaller than the lower hole so that the bar terminal can be easily caught.

あるいは、電線の端子台の接続手段として用いられる銅部材にばねにより対象物を圧接させて導通を得る速結端子構造を母線側電圧測定部又は接続バー側電圧測定部に形成し、本テストリード脱落防止手段として用いて、棒端子の抜き差しをより確実に行うよう構成してもよい。この場合も、棒端子を差し込みやすいように差込口を住宅用分電盤の前面側に向けて設けるとよい。 Alternatively, the test lead can be formed by forming a fast connection terminal structure in the bus bar side voltage measurement unit or the connection bar side voltage measurement unit to press and connect the object to the copper member used as the connection means of the terminal block of the electric wire with a spring. You may comprise so that it may use as a drop-off prevention means, and may more reliably insert and remove a bar terminal. Also in this case, it is preferable to provide the insertion port toward the front side of the residential distribution board so that the bar terminal can be easily inserted.

また、電圧測定器の本体を住宅用分電盤側に保持させるべく、電圧測定器本体の保持手段を住宅用分電盤に設けて構成してもよい。 Further, in order to hold the main body of the voltage measuring instrument on the residential distribution board side, the holding means of the voltage measuring instrument main body may be provided on the residential distribution board.

この場合には、住宅用分電盤におけるケースに、前記電圧測定器本体又は測定器本体に設けられる持ち運び用ベルトを引掛け可能なフックを取付けて保持手段を構成したり、
電圧測定器本体を収納できるポケット部を住宅用分電盤のケースに取付けて構成してもよい。 In this case, the holding means is configured by attaching a hook that can be hooked to the voltage measuring device main body or the carrying belt provided in the measuring device main body to the case in the residential distribution board,
You may comprise the pocket part which can accommodate a voltage measuring device main body, attaching to the case of the distribution board for houses.

電圧測定器本体の保持手段に電圧測定器を保持させたときには、電圧測定器本体の電圧値読取部（計器、モニタ等）が、作業者から視認しやすいよう、保持角度の調整手段を設けて、作業者の方向に前記電圧値読取部を向けて保持できるよう構成するとなおよい。 When the voltage measuring instrument is held by the holding means of the voltage measuring instrument main body, a holding angle adjusting means is provided so that the voltage reading unit (meter, monitor, etc.) of the voltage measuring instrument main body is easily visible to the operator. More preferably, the voltage value reading unit can be held in the direction of the operator.

（分岐開閉器の取付について）
次に，分岐開閉器の母線への取付け方法について補足しておく。 (About installation of branch switch)
Next, we will supplement the method of mounting the branch switch to the bus.

分岐開閉器は、前記分岐線が延出する方向から取付けていく。図１５において，分岐開閉器２の取付けの際は，分岐開閉器の電源側端子２２Ｂと，前記分岐線とが対向するように，前記分岐開閉器取付板３に載置し，分岐線の方向に押圧してスライドさせていき、分岐線に対して電源側端子部２２Ｂを押し付けるようにして取付ける。 The branch switch is attached from the direction in which the branch line extends. In FIG. 15, when installing the branch switch 2, the branch switch is mounted on the branch switch mounting plate 3 so that the power supply side terminal 22B of the branch switch faces the branch line, and the direction of the branch line The power supply side terminal portion 22B is pressed against the branch line and attached.

前記分岐開閉器２の電源側端子は、一つの共通端子２２Ａと一つの選択端子２２Ｂとの何れもが、ねじ締めの必要なく接続が行えるプラグイン端子で構成しているから，該プラグイン端子が分岐線の方向に押圧されることにより，プラグイン端子が分岐線をくわえ込み，分岐線との接続を完了する。 The power supply side terminal of the branch switch 2 is composed of a plug-in terminal in which both one common terminal 22A and one selection terminal 22B can be connected without the need for screw tightening. Is pushed in the direction of the branch line, the plug-in terminal holds the branch line and completes the connection with the branch line.

一部の分岐開閉器において電圧を切替える場合においては，一旦，母線から分岐開閉器を取り外し，該分岐開閉器の選択端子２２Ｂの位置を他方に移動させた上で，再度母線の方向に押圧して取付け作業を行う。このときには，視覚的に，分岐開閉器における選択端子２２Ｂの位置が変わり，また，該選択端子２２Ｂと接続される前記分岐線の位置関係が変わるが，その変化を容易に把握できるから，作業者は分岐開閉器に供給される予定の電圧値の大きさを明確に把握でき，接続が正しいか否かを視覚的にも容易に判断でき，電圧測定の作業効率が上がるとともに，誤接続等が極力防止されて、負荷機器の電気的故障を未然に防止する効果が期待できる。 When switching the voltage in some branch switches, once remove the branch switch from the bus, move the position of the selection terminal 22B of the branch switch to the other, and then press it again in the direction of the bus. To install. At this time, the position of the selection terminal 22B in the branch switch is visually changed, and the positional relationship of the branch line connected to the selection terminal 22B is changed. Can clearly grasp the magnitude of the voltage value to be supplied to the branch switch, and can easily determine visually whether or not the connection is correct, which increases the work efficiency of voltage measurement and prevents incorrect connections. It can be prevented as much as possible, and the effect of preventing electrical failure of the load equipment can be expected.

１ 主開閉器
２ 分岐開閉器
３ 取付板
４ 取付板
５ 絶縁部材
６ 絶縁壁
１１ 母線（Ｌ１）
１２ 母線（Ｌ２）
１３ 母線（Ｎ）
１００ 内部ユニット
１１０１ａ Ｌ１の分岐線
１２０１ａ Ｌ２の分岐線
１３０１ａ Ｎの分岐線
１４ 接続バーカバー
１１０ 接続バー
１１１ 第一の孔部
１２０ 接続バー
１２１ 第一の孔部
１３０ 接続バー
２１ 連通孔
２２Ａ 電源側端子
２２Ｂ 電源側端子
２３ 負荷側端子
２４ 操作ハンドル
２５ 操作部
２６ ピニオン
２７ 電圧表示部

1 Main Switch 2 Branch Switch 3 Mounting Plate 4 Mounting Plate 5 Insulating Member 6 Insulating Wall 11 Bus (L1)
12 Bus (L2)
13 Bus (N)
100 Internal unit 1101a L1 branch line 1201a L2 branch line 1301a N branch line 14 Connection bar cover 110 Connection bar 111 First hole 120 Connection bar 121 First hole 130 Connection bar 21 Communication hole 22A Power supply side terminal 22B Power supply side terminal 23 Load side terminal 24 Operation handle 25 Operation part 26 Pinion 27 Voltage display part

Claims (5)

住宅用分電盤に配設された互いに電位の異なる第一の電圧極、第二の電圧極及び中性極の母線の内、所定の２つの母線に接続されるプラグイン端子間に印加された電源電圧を、分岐開閉器に設けられた接点装置を入切する操作ハンドルが入のときに負荷回路に供給する分岐開閉器における、該分岐開閉器から負荷回路に供給する電源電圧の大きさを、各々の分岐開閉器毎に、前記操作ハンドルが切の状態で確認する電源電圧測定構造であって、
前記電源電圧測定構造は、
前記第一の電圧極及び第二の電圧極のそれぞれの母線に設けられて、該母線に接続される複数の分岐開閉器に対して共通して用いられる第一及び第二の母線側電圧測定部と、
前記分岐開閉器において前記接点装置よりも電気的に前記プラグイン端子側に設けられて、
各々の分岐開閉器毎に個別に用いられる分岐開閉器側電圧測定部とを備え、
前記分岐開閉器の操作ハンドルを切にした状態で、
前記電源電圧の測定に用いる電圧測定器の２本のテストリードの内、
一方のテストリードを前記第一又は第二の母線側電圧測定部に当接させたままで、
他方のテストリードを各々の前記分岐開閉器側電圧測定部に対して個別に当接させていくことにより、
前記分岐開閉器における前記所定の２つの母線に接続されるプラグイン端子間に印加された電源電圧の測定を行えるようにした住宅用分電盤の負荷回路への供給電源電圧測定構造。
Applied between the plug-in terminals connected to two predetermined buses among the buses of the first voltage electrode, the second voltage electrode and the neutral electrode having different potentials arranged on the residential distribution board. The magnitude of the power supply voltage supplied from the branch switch to the load circuit in the branch switch that supplies the load circuit to the load circuit when the operation handle for turning on and off the contact device provided on the branch switch is turned on For each branch switch, the power supply voltage measuring structure for confirming that the operation handle is turned off,
The power supply voltage measurement structure is:
First and second bus side voltage measurement provided in each bus of the first voltage electrode and the second voltage electrode and commonly used for a plurality of branch switches connected to the bus. And
Provided on the plug-in terminal side more electrically than the contact device in the branch switch,
A branch switch side voltage measurement unit used individually for each branch switch,
With the operation handle of the branch switch turned off,
Of the two test leads of the voltage measuring instrument used for measuring the power supply voltage,
With one test lead in contact with the first or second bus side voltage measurement unit,
By bringing the other test lead into contact with each branch switch side voltage measurement unit individually,
A power supply voltage measurement structure to a load circuit of a residential distribution board that can measure a power supply voltage applied between plug-in terminals connected to the predetermined two buses in the branch switch.
前記母線側電圧測定部に、前記テストリードを当接させた際に、該テストリードを保持するテストリード脱落防止手段を備えて構成した請求項１記載の住宅用分電盤の負荷回路への供給電源電圧測定構造。
2. The residential distribution board load circuit according to claim 1, further comprising a test lead drop-off preventing unit that holds the test lead when the test lead is brought into contact with the bus-side voltage measuring unit. Supply voltage measurement structure.
前記分岐開閉器の操作ハンドルが設けられた面側を分岐開閉器を取付ける面側に対して前面側としたとき、電圧測定対象となるプラグイン端子と電気的に接続された分岐開閉器側電圧測定部に対して、前記前面側から前記テストリードを当接させるための電圧測定用連通孔を分岐開閉器に備えて構成した請求項１又は請求項２記載の住宅用分電盤の負荷回路への供給電源電圧測定構造。
The branch switch side voltage electrically connected to the plug-in terminal for voltage measurement when the surface side on which the operation handle of the branch switch is provided is the front side with respect to the surface side on which the branch switch is mounted. The load circuit for a residential distribution board according to claim 1 or 2, wherein a voltage measuring communication hole for bringing the test lead into contact with the measuring unit from the front side is provided in a branch switch. Supply power voltage measurement structure to.
前記電源電圧測定構造は、
前記母線側電圧測定部に代えて、
主開閉器の二次側と母線とを各極毎に接続する接続バーに、
前記母線に接続される複数の分岐開閉器に対して共通して設けられる第一及び第二の接続バー側電圧測定部を設けて構成され、
該接続バー側電圧測定部として、
前記テストリードを挿入するための第一の孔部を設けて構成したことを特徴とする請求項１乃至請求項３記載の内何れか一項に記載の住宅用分電盤の負荷回路への供給電源電圧測定構造。
The power supply voltage measurement structure is:
Instead of the bus side voltage measurement unit,
To the connection bar that connects the secondary side of the main switch and the busbar for each pole,
The first and second connection bar side voltage measurement unit provided in common for a plurality of branch switches connected to the bus,
As the connection bar side voltage measurement unit,
4. The residential distribution board load circuit according to claim 1, further comprising a first hole for inserting the test lead. 5. Supply voltage measurement structure.
前記接続バーを覆い、該接続バーへの不用意な接触を防止する接続バーカバーにおいて
、
前記第一の孔部の前記前面側にテストリードを該第一の孔部に連通させるための第二の孔
部を設け、住宅用分電盤の壁面への取付時における天地方向を上下方向とした場合に、
第二の孔部の中心を第一の孔部の中心に対して上方向に偏らせて配設し、
テストリードを連通させて挿入したときに、
該テストリードが第一の孔部内面と第二の孔部内面とに係合され脱落が防止されることを
特徴とする請求項４記載の住宅用分電盤の負荷回路への供給電源電圧測定構造。
Covering the front SL connection bar, in connection bar cover to prevent inadvertent contact with the said connection bar,
A second hole for connecting the test lead to the first hole is provided on the front side of the first hole, and the vertical direction is set to the vertical direction when the housing distribution panel is attached to the wall surface. If
The center of the second hole portion is disposed so as to be biased upward with respect to the center of the first hole portion,
When the test leads are connected and inserted,
The supply voltage to the load circuit of the residential distribution board according to claim 4, wherein the test lead is engaged with the inner surface of the first hole and the inner surface of the second hole to prevent the test lead from falling off. Measurement structure.
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Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4059328A (en) * 1976-07-19 1977-11-22 Rigo Larry E Mountings for electrical fixtures in junction boxes
JPS6223047U (en) * 1985-07-25 1987-02-12
JPH0578116U (en) * 1992-03-23 1993-10-22 河村電器産業株式会社 Charging section cover with fixing mechanism
JPH06251688A (en) * 1993-02-26 1994-09-09 Toshiba Lighting & Technol Corp Terminal device and circuit breaker
JPH0680268U (en) * 1993-04-22 1994-11-08 河村電器産業株式会社 Structure of the ground terminal of the distribution board
IT1275742B1 (en) * 1995-06-08 1997-10-17 Gewiss Spa SWITCHBOARD FOR ELECTRICITY SUPPLY, PARTICULARLY FOR DOMESTIC USE
JP3018942B2 (en) * 1995-06-30 2000-03-13 松下電工株式会社 Single-phase three-wire distribution board
JP2598826Y2 (en) * 1997-09-19 1999-08-23 河村電器産業株式会社 Main bar support of distribution board
US6315580B1 (en) * 1999-06-04 2001-11-13 Astec International Limited PCB connector module for plug-in circuit breakers and fuses
JP4481119B2 (en) * 2004-09-09 2010-06-16 中国電力株式会社 Conductor device

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