JP4564643B2 - Single-phase three-wire distribution board voltage switching device - Google Patents
Single-phase three-wire distribution board voltage switching device Download PDFInfo
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- JP4564643B2 JP4564643B2 JP2000339799A JP2000339799A JP4564643B2 JP 4564643 B2 JP4564643 B2 JP 4564643B2 JP 2000339799 A JP2000339799 A JP 2000339799A JP 2000339799 A JP2000339799 A JP 2000339799A JP 4564643 B2 JP4564643 B2 JP 4564643B2
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Description
【0001】
【発明の属する技術分野】
この発明は単相3線式分電盤に関し,特に,その分岐ブレーカの電圧切替装置に関するものである。
【0002】
【従来の技術】
分岐ブレーカの電圧切替装置としては,従来,図1に示すようなものがあった。図1において,11は第一の電圧相の導体,12は中性相の導体,13は第二の電圧相の導体である。14,15は分岐ブレーカ,16,20は送り板,17はねじ,18は筒状導体子,19は雌ねじ部材である。1101は第一の電圧相の導体11から延出する接続部で,分岐ブレーカ14の端子1402に接続される。なお,図の分岐ブレーカの端子は,導体を弾性による挟み込みで接続するプラグイン状のものとして設定している。16の送り板は,接続部1601と長孔1602を有し,接続部1601は分岐ブレーカ14の端子1401に接続される。1202と1303は中性相導体と第二の電圧相導体のU字状切欠部で,それぞれに1201と1302のように筒状導体接続面部を含み,送り板16の長孔1602の端と端にそれぞれU字切欠部のU字の開口が内向きとなるよう配置されている。ねじ17と雌ねじ部材19は,送り板16とU字状切欠部1202または1303の間に筒状導体子18を選択して圧接状に締めつける。1202を選択した場合は,分岐ブレーカ14には,第一の電圧相の導体11と中性相の導体12から電圧が供給されて100Vとなる。また1303を選択した場合は第一の電圧相の導体11と第二の電圧相の導体13から電圧が供給されて200Vとなる。15の分岐ブレーカについても接続部1301と2001から電圧が供給され,電圧の切替えは14のブレーカの場合と同様である。
【0003】
図2は,その様子を断面で表した図で,図1の分岐ブレーカ15に接続される送り板20について示している。図2において21は,絶縁部材で,図1では図示されていなかったが,図1の送り板や筒状導体子やその他の構成部材の支持や,異極間の絶縁を確保している。図1において,ブレーカ15は,送り板20の接続部2001と第二の電圧相導体13の接続部1301に接続されて電圧を供給される。図2は,送り板20が筒状導体子18により中性相導体12のU字状切欠部1204に接続されている状態を表している。
【0004】
【発明が解決しようとする課題】
上記のような従来の単相3線式分電盤の電圧切替装置は,電圧切替えに当たって,ねじ17を緩めて筒状導体子18と雌ねじ部材19ごと長孔内を端から端まで移動させ,ねじを再び締めつけるのみで簡単に電圧を切替えることができるものである。
【0005】
しかしながら,分電盤は通常,垂直な壁面に対し,図1のブレーカの底面を平行に送り板16,20の長孔が垂直になるように取り付けるから,ねじ17を緩めて長孔の上方に移動させた際にドライバの先端をねじから離すと,ねじと筒状導体子と雌ねじ部材が簡単に長孔の下方に落ちてしまうという問題があった。また,送り板の長孔内をねじが自在に移動できるため,ねじを締める際の位置決めが明確でなく,U字切欠部に中途半端に筒状導体子と雌ねじ部材が接触した状態でねじを締めてしまうことができて,ねじ締めによる接触が不完全となる可能性があった。
【0006】
本発明は,図1に示すような従来例の電圧切替装置において,分電盤を壁面に取り付けた状態で,ねじを長孔の上方に移動させドライバの先端をねじから離した際に,ねじと筒状導体子と雌ねじ部材が簡単に長孔の下方に落ちることがなく,ねじを締める際の位置決めが明確で,U字切欠部に中途半端に筒状導体子と雌ねじ部材が接触することがなく,ねじ締めによる接触が完全とできるような電圧切替装置を提供することを目的としている。
【0007】
【課題を解決するための手段】
そこで本件の発明は,主幹ブレーカと,複数の2極分岐ブレーカと,該主幹ブレーカと複数の2極分岐ブレーカを電気的に接続する導体装置を含む単相3線式分電盤の,分岐ブレーカの片方の極に接続する導体相を中性相と電圧相に切替えて分岐ブレーカへの供給電圧を切替える電圧切替装置において,該電圧切替装置は,前記分岐ブレーカの片方の極の端子に接続され長孔を有する送り板と,中性相と第一及び第二の電圧相の導体と,筒状導体子と,前記送り板に形成された長孔と筒状導体子を貫通し,筒状導体子を中性相もしくは電圧相の導体の接続部に選択的に接続するねじと,該ねじが接続される雌ねじ部材を含んでなるものであり,前記電圧切替部の中性相と電圧相の導体の筒状導体子への接続部は前記筒状導体子接続面部を含むU字状切欠部であり,
前記長孔の端と端にそれぞれU字状切欠部のU字の開口が内向きとなるよう配置され,
前記ねじと雌ねじ部材は送り板の長孔の端部にて該送り板と夫々のU字状切欠部の間に筒状導体子を圧接状に締めつける一方,
ねじを緩めた状態では送り板の長孔内を筒状導体子及び雌ねじとともに移動され,
送り板長孔の中央部には,
前記U字状切欠部を切替える際にねじを緩めた状態で乗り越えが可能となるとともに,
分電盤を壁面に取り付けた状態ではねじ及び雌ねじ部材の脱落を防止する凸部を形成し,
該凸部を乗り越えた位置が締めつけ位置となる位置規制部を形成したことを特徴とする単相3線式分電盤の電圧切替装置を提供したものである。それにより,長孔内のねじの移動は,長孔中央部の障害部を乗り越えておこなうことになるから,簡単にはねじが移動することがなくなり,ねじからドライバーの先端を離しても,ねじはその位置で保持される。また,ねじは障害部によって,長孔内の端に位置規制された状態で締め付けることができるから,接触が不完全になることがない。
【0008】
【発明の実施の形態】
この発明の第1の実施例について図面を用いて以下に説明する。図3と図4は,本件発明,第一実施例の電圧切替装置の説明図である。
【0009】
図において,1603と2003は,送り板16と20の長孔1602と2002の略中央部に形成された凸部である。1603と2003以外の符号で示す部分は図1と図2に示す符号と同一であるので,説明を省略する。図4において,ねじ17をゆるめて,筒状導体子18の接続をU字状切欠部1102側に切替える際は,凸部2003を乗り越える必要があるが,適度にねじを緩めれば可能である。一旦ねじ17が凸部2003を乗り越えた後は図4の第一の電圧相導体11が上方になるように図の底面が垂直な状態となっても,凸部2003にねじ17の移動が阻止されて,容易に落ちることがない。また,凸部2003によりねじ17は,長孔2002のどちらか一方の端に位置規制されるため,U字状切欠部の奥一杯までねじが入り込み,筒状導体子18とU字状切欠部の接触が確実な状態でねじを締めることができる。
【0010】
図5と図6は,本件発明の第二の実施例で,図3と図4の凸部1603と2003を逆さにした凸部1604と2004に置き換えたものであり,それによる作用効果は図3と図4に示す第一の例と同一である。
【0011】
【効果】
以上のように本発明によれば,図1に示すような従来例の電圧切替装置において,ねじを長孔の上方に移動させドライバの先端をねじから離した際に,ねじと筒状導体子と雌ねじ部材が簡単に長孔の下方に落ちることがなく,ねじを締める際の位置決めが明確で,U字切欠部に中途半端に筒状導体子と雌ねじ部材が接触することがなく,ねじ締めによる接触を完全とできる電圧切替装置を提供することができる。
【図面の簡単な説明】
【図1】従来の分岐ブレーカの電圧切替装置の図。
【図2】従来の分岐ブレーカの電圧切替装置の断面図。
【図3】本件発明第一の実施例による電圧切替装置の図。
【図4】本件発明第一の実施例による電圧切替装置の断面図。
【図5】本件発明第ニの実施例による電圧切替装置の図。
【図6】本件発明第ニの実施例による電圧切替装置の断面図。
【符号の説明】
11 第一の電圧相の導体
12 中性相の導体
13 第二の電圧相の導体
16,20 送り板
1602,2002 長孔
1603,2003 凸部
1604,2004 凸部
17 ねじ
18 筒状導体子
19 雌ねじ部材
21 絶縁部材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a single-phase three-wire distribution board, and more particularly to a voltage switching device for the branch breaker.
[0002]
[Prior art]
Conventionally, there has been a voltage switching device for a branch breaker as shown in FIG. In FIG. 1, 11 is a first voltage phase conductor, 12 is a neutral phase conductor, and 13 is a second voltage phase conductor. 14 and 15 are branch breakers, 16 and 20 are feed plates, 17 is a screw, 18 is a cylindrical conductor, and 19 is a female screw member.
[0003]
FIG. 2 is a diagram showing the state in section, and shows the
[0004]
[Problems to be solved by the invention]
In the voltage switching device of the conventional single-phase three-wire distribution board as described above, when the voltage is switched, the screw 17 is loosened and the
[0005]
However, since the distribution board is usually mounted so that the bottom of the breaker of FIG. If the tip of the driver is moved away from the screw when moved, the screw, the cylindrical conductor, and the female screw member easily fall below the long hole. In addition, since the screw can move freely in the long hole of the feed plate, the positioning when tightening the screw is not clear, and the screw is placed with the cylindrical conductor and the female screw member in contact with the U-shaped notch at the halfway end. There was a possibility that the contact by screw tightening could be incomplete.
[0006]
In the voltage switching device of the conventional example as shown in FIG. 1, the screw is moved when the screw is moved above the slot and the tip of the driver is separated from the screw with the distribution board attached to the wall. The cylindrical conductor and female screw member do not easily fall below the long hole, the positioning when tightening the screw is clear, and the cylindrical conductor and female screw member are in contact with the U-shaped notch halfway The object is to provide a voltage switching device that can be completely contacted by screw tightening.
[0007]
[Means for Solving the Problems]
Accordingly, the present invention provides a branch breaker of a single-phase three-wire distribution board including a main breaker, a plurality of two-pole branch breakers, and a conductor device that electrically connects the main breaker to a plurality of two-pole branch breakers. In the voltage switching device for switching the supply voltage to the branch breaker by switching the conductor phase connected to one of the poles to the neutral phase and the voltage phase, the voltage switching device is connected to the terminal of the one pole of the branch breaker. A feed plate having a long hole, a neutral phase, first and second voltage phase conductors, a cylindrical conductor, and a long hole and a cylindrical conductor formed in the feed plate , a screw for selectively connecting the connecting portions of the conductors of the neutral phase or voltage phase Dotaiko, a female screw member to which the screw is connected and made of Nde containing, neutral phase voltage phase of the voltage switching unit The connecting portion of the conductor to the cylindrical conductor includes the cylindrical conductor connecting surface portion. A-shaped cut-out portion,
U-shaped openings of U-shaped cutouts are arranged inwardly at the ends of the long holes, respectively,
While the screw and the female screw member fasten the cylindrical conductor between the feed plate and each U-shaped notch at the end of the long hole of the feed plate,
When the screw is loosened, it is moved along with the cylindrical conductor and female screw in the long hole of the feed plate.
In the center of the feed plate slot,
When switching the U-shaped notch, it is possible to get over with the screw loosened,
When the distribution board is attached to the wall, a convex part is formed to prevent the screws and female screw members from falling off.
The present invention provides a voltage switching device for a single-phase three-wire distribution board characterized in that a position regulating portion is formed in which a position over the convex portion is a tightening position . As a result, the screw in the slot is moved over the obstacle in the center of the slot, so that the screw does not move easily. Is held in that position. Moreover, since the screw can be tightened in a state where the position is regulated by the obstacle in the end of the long hole, the contact does not become incomplete.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of the present invention will be described below with reference to the drawings. 3 and 4 are explanatory diagrams of the voltage switching device according to the present invention and the first embodiment.
[0009]
In the figure,
[0010]
FIGS. 5 and 6 show a second embodiment of the present invention in which the
[0011]
【effect】
As described above, according to the present invention, in the conventional voltage switching device as shown in FIG. 1, when the screw is moved above the elongated hole and the tip of the driver is separated from the screw, the screw and the cylindrical conductor The female screw member does not easily fall below the long hole, the positioning when tightening the screw is clear, the cylindrical conductor and the female screw member do not contact the U-shaped notch partway, Therefore, it is possible to provide a voltage switching device that can complete the contact by.
[Brief description of the drawings]
FIG. 1 is a diagram of a voltage switching device of a conventional branch breaker.
FIG. 2 is a cross-sectional view of a conventional voltage switching device for a branch breaker.
FIG. 3 is a diagram of a voltage switching device according to a first embodiment of the present invention.
FIG. 4 is a cross-sectional view of a voltage switching device according to a first embodiment of the present invention.
FIG. 5 is a diagram of a voltage switching device according to a second embodiment of the present invention;
FIG. 6 is a cross-sectional view of a voltage switching device according to a second embodiment of the present invention.
[Explanation of symbols]
11 First
Claims (1)
該電圧切替装置は,前記分岐ブレーカの片方の極の端子に接続され長孔を有する送り板と,中性相と第一及び第二の電圧相の導体と,筒状導体子と,前記送り板に形成された長孔と筒状導体子を貫通し,筒状導体子を中性相もしくは電圧相の導体の接続部に選択的に接続するねじと,該ねじが接続される雌ねじ部材を含んでなるものであり,
前記電圧切替部の中性相と電圧相の導体の筒状導体子への接続部は前記筒状導体子接続面部を含むU字状切欠部であり,
前記長孔の端と端にそれぞれU字状切欠部のU字の開口が内向きとなるよう配置され,
前記ねじと雌ねじ部材は送り板の長孔の端部にて該送り板と夫々のU字状切欠部の間に筒状導体子を圧接状に締めつける一方,
ねじを緩めた状態では送り板の長孔内を筒状導体子及び雌ねじとともに移動され,
送り板長孔の中央部には,
前記U字状切欠部を切替える際にねじを緩めた状態で乗り越えが可能となるとともに,
分電盤を壁面に取り付けた状態ではねじ及び雌ねじ部材の脱落を防止する凸部を形成し,
該凸部を乗り越えた位置が締めつけ位置となる位置規制部を形成したことを特徴とする単相3線式分電盤の電圧切替装置。Connected to one pole of a branch breaker of a single-phase three-wire distribution board including a main breaker, a plurality of two-pole branch breakers, and a conductor device that electrically connects the main breaker and a plurality of two-pole branch breakers In the voltage switching device that switches the supply phase voltage to the branch breaker by switching the conductor phase to neutral phase and voltage phase,
The voltage switching device includes a feed plate connected to one terminal of the branch breaker and having a long hole, a neutral phase, first and second voltage phase conductors, a cylindrical conductor, and the feed A screw that penetrates the long hole formed in the plate and the cylindrical conductor, selectively connects the cylindrical conductor to the connection portion of the neutral phase or voltage phase conductor , and a female screw member to which the screw is connected It is made of Nde including,
The connection portion of the neutral phase and voltage phase conductor of the voltage switching portion to the cylindrical conductor is a U-shaped notch including the cylindrical conductor connection surface portion,
U-shaped openings of U-shaped cutouts are arranged inwardly at the ends of the long holes, respectively,
While the screw and the female screw member fasten the cylindrical conductor between the feed plate and each U-shaped notch at the end of the long hole of the feed plate,
When the screw is loosened, it is moved along with the cylindrical conductor and female screw in the long hole of the feed plate.
In the center of the feed plate slot,
When switching the U-shaped notch, it is possible to get over with the screw loosened,
When the distribution board is attached to the wall, a convex part is formed to prevent the screws and female screw members from falling off.
A voltage switching device for a single-phase three-wire distribution board characterized in that a position regulating portion is formed in which a position over the convex portion is a tightening position .
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JP2000339799A JP4564643B2 (en) | 2000-11-08 | 2000-11-08 | Single-phase three-wire distribution board voltage switching device |
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JP2000339799A JP4564643B2 (en) | 2000-11-08 | 2000-11-08 | Single-phase three-wire distribution board voltage switching device |
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JP4481119B2 (en) * | 2004-09-09 | 2010-06-16 | 中国電力株式会社 | Conductor device |
JP5062691B2 (en) * | 2008-06-18 | 2012-10-31 | 河村電器産業株式会社 | Screw fall prevention tool |
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JPS5696813U (en) * | 1979-12-25 | 1981-07-31 | ||
JPH08214419A (en) * | 1995-02-03 | 1996-08-20 | Matsushita Electric Works Ltd | Single-phase three-wire type distribution board |
JP2862228B2 (en) * | 1995-11-08 | 1999-03-03 | 河村電器産業株式会社 | Single-phase three-wire distribution board |
JP3522967B2 (en) * | 1996-03-30 | 2004-04-26 | テンパール工業株式会社 | Single-phase three-wire distribution board |
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