JP5834315B2 - Breaker mounting structure - Google Patents

Breaker mounting structure Download PDF

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JP5834315B2
JP5834315B2 JP2012012887A JP2012012887A JP5834315B2 JP 5834315 B2 JP5834315 B2 JP 5834315B2 JP 2012012887 A JP2012012887 A JP 2012012887A JP 2012012887 A JP2012012887 A JP 2012012887A JP 5834315 B2 JP5834315 B2 JP 5834315B2
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breaker
mounting
wide
width
attachment
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JP2013153593A (en
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浩之 岡村
浩之 岡村
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Nitto Kogyo Corp
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Description

本発明は、幅寸法の異なるブレーカを分電盤や配電盤等の取付板に取り付けることができるブレーカの取付構造に関するものである。   The present invention relates to a breaker mounting structure in which breakers having different width dimensions can be mounted to a mounting plate such as a distribution board or a distribution board.

従来からブレーカのケースの幅寸法は、定格電流値に応じてさまざまであるが、単位幅ブレーカの幅寸法の整数倍に設定されたものが多い。これらのブレーカの底面には、分電盤や配電盤の取付板に穿設された取付孔に係合させるための対をなす取付部が形成されており、これらの取付部は通常、特許文献１に示すようにブレーカの底面の四隅に形成されている。特許文献１に示すように左右側面端部の底面に取付部を形成した単位幅ブレーカは、取付部を取付孔の縁部に係止されるように形成している。ここで、ブレーカを取付板に配列する場合にはブレーカの発熱が他のブレーカに伝搬する影響を防ぐために、隣り合うブレーカとの間に約１〜２ｍｍ程度の空隙を設ける必要がある。この場合、取付部を保持する取付孔の形状が異なる取付板を用意し、分電盤の容量によって取付板を自由に選択使用できるようにしていた。しかし、異なる種類の取付板を使用する場合において、単位幅ブレーカより幅広に形成した幅広ブレーカは各取付板に対応できない問題があった。以下に理由を説明する。   Conventionally, the width dimension of the case of the breaker varies depending on the rated current value, but is often set to an integral multiple of the width dimension of the unit width breaker. On the bottom surface of these breakers, a pair of mounting portions for engaging with mounting holes drilled in the mounting plate of the distribution board or distribution board is formed. As shown in FIG. 4, they are formed at the four corners of the bottom surface of the breaker. As shown in Patent Document 1, the unit width breaker in which the attachment portion is formed on the bottom surface of the left and right side end portions is formed so that the attachment portion is locked to the edge portion of the attachment hole. Here, when the breakers are arranged on the mounting plate, it is necessary to provide a gap of about 1 to 2 mm between adjacent breakers in order to prevent the heat generated by the breakers from propagating to other breakers. In this case, mounting plates having different mounting hole shapes for holding the mounting portions are prepared so that the mounting plates can be freely selected and used depending on the capacity of the distribution board. However, when different types of mounting plates are used, the wide breaker formed wider than the unit width breaker has a problem that it cannot handle each mounting plate. The reason will be described below.

図１[ａ］、［ｂ］に取付孔１００の形状が異なる場合での単位幅ブレーカ２００の取付構造について説明する。ここで、取付孔１００は図１［ｂ］のほうが幅広に形成しており、各取付孔１００の取付ピッチの間隔ａは同じである。図１［ａ］に示すように一方の単位幅ブレーカ２００ａを各取付孔１００の縁部１００ａ，１００ｂに取り付け、隣り合う位置に他方の単位幅ブレーカ２００ｂを取付孔１００の縁部１００ｃ、１００ｄに取り付ける。また、図１［ｂ］のように取付孔１００を幅広に形成した場合においても、縁部１００ａ、１００ｂ間と縁部１００ｃ，１００ｄ間の間隔ａが同じであるため、各単位幅ブレーカ２００（２００ａ、２００ｂ）を取り付けることが可能である。   The attachment structure of the unit width breaker 200 when the shape of the attachment hole 100 differs in FIG. 1 [a], [b] is demonstrated. Here, the attachment holes 100 are formed wider in FIG. 1B, and the intervals a of the attachment pitches of the attachment holes 100 are the same. As shown in FIG. 1A, one unit width breaker 200a is attached to the edge portions 100a and 100b of each attachment hole 100, and the other unit width breaker 200b is attached to the edge portions 100c and 100d of the attachment hole 100 at adjacent positions. Install. In addition, even when the mounting hole 100 is formed wide as shown in FIG. 1B, the interval a between the edge portions 100a and 100b and the edge portions 100c and 100d is the same, so each unit width breaker 200 ( 200a, 200b) can be attached.

次に、単位幅ブレーカ２００より幅広に形成した幅広ブレーカ３００で、幅広ブレーカ３００の取付構造について図１［ｃ］、［ｄ］を用いて説明する。ここで、幅広ブレーカ３００の取付部は単位幅ブレーカ２００と同様に左右側面端部に形成しており、図１［ｃ］の取付板の形状は図１［ａ］と、図１［ｄ］の取付板の形状は図１［ｂ］と同様である。図１［ｃ］のように幅広ブレーカ３００の左右側面端部に形成した取付部を縁部１００ａ、１００ｄにおいて保持させることができる場合には、図１［ｄ］の取付板においては、図１［ｃ］より１００ａから１００ｄ間の距離が広くなっているため、取付板に幅広ブレーカ３００を取り付けることが出来なかった。そのため、図１［ｄ］の取付板を使用する場合には単位幅ブレーカ及び幅広ブレーカを混在させて形成することは不可能であった。問題を解決するために、それぞれの取付孔のピッチ間隔が異なる取付板に対応した幅広ブレーカを用意する必要があるが部品点数が多くなってしまう問題があった。このため、取付板の取付孔の穿設位置は、ブレーカ底面の取付部の形成位置及び上記空隙を考慮して設定されるため、同一の取付板を異なる幅寸法のブレーカに用いることができないという問題があった。   Next, a mounting structure of the wide breaker 300 using the wide breaker 300 formed wider than the unit width breaker 200 will be described with reference to FIGS. 1C and 1D. Here, the attachment portion of the wide breaker 300 is formed at the left and right side end portions similarly to the unit width breaker 200, and the shape of the attachment plate of FIG. 1 [c] is FIG. 1 [a] and FIG. 1 [d]. The shape of the mounting plate is the same as in FIG. When the mounting portions formed at the left and right side end portions of the wide breaker 300 as shown in FIG. 1 [c] can be held at the edge portions 100a and 100d, the mounting plate of FIG. Since the distance between 100a and 100d is wider than [c], the wide breaker 300 could not be attached to the attachment plate. Therefore, when the mounting plate of FIG. 1D is used, it is impossible to form a unit width breaker and a wide breaker together. In order to solve the problem, it is necessary to prepare a wide breaker corresponding to a mounting plate in which the pitch interval of each mounting hole is different, but there is a problem that the number of parts increases. For this reason, since the drilling position of the mounting hole of the mounting plate is set in consideration of the formation position of the mounting portion on the bottom surface of the breaker and the gap, the same mounting plate cannot be used for breakers having different width dimensions. There was a problem.

特許４５６２５４５号公報Japanese Patent No. 4562545

本発明の目的は前記問題を解決し、取付孔の間隔、形状が異なる取付板にも幅寸法の異なるブレーカを確実に固定できるブレーカの取付構造を提供することである。   An object of the present invention is to solve the above problems and provide a breaker mounting structure that can securely fix breakers having different width dimensions to mounting plates having different mounting hole intervals and shapes.

上記課題を解決するためになされた本発明に係るブレーカの取付構造は、単位幅ブレーカに対し幅広に形成した幅広ブレーカを、単位幅ブレーカ取付用の取付板に取り付ける取付構造であって、前記取付板には、単位幅ブレーカの底面側端部に形成された対をなす取付爪を挿入係止可能な取付孔が複数穿設され、前記幅広ブレーカは底面に、前記取付孔に挿入係止される前記幅広ブレーカの短手方向に対をなす取付部を備え、該取付部の一方と他方との距離を、前記単位幅ブレーカ１個分の幅に形成したことを特徴とするものである。   A breaker mounting structure according to the present invention made to solve the above-mentioned problems is a mounting structure for mounting a wide breaker formed wider than a unit width breaker to a mounting plate for mounting a unit width breaker. The plate is provided with a plurality of mounting holes for inserting and locking a pair of mounting claws formed at the bottom side end of the unit width breaker, and the wide breaker is inserted and locked into the mounting hole on the bottom surface. The wide breaker is provided with a pair of attachment portions that are paired in the short direction, and the distance between one of the attachment portions and the other is formed to be the width of one unit width breaker.

また、本発明において、前記幅広ブレーカの短手方向に対をなす前記取付部の一方を前記幅広ブレーカの底面側端部に形成し、他方を該幅広ブレーカの底面中央寄りに形成することが好ましい。   Further, in the present invention, it is preferable that one of the attachment portions paired in the short direction of the wide breaker is formed at a bottom side end portion of the wide breaker, and the other is formed near the center of the bottom surface of the wide breaker. .

また、前記幅広ブレーカの短手方向に対をなす前記取付部を内向きの断面Ｌ字状に形成し、一方の取付部の外側面と他方の取付部の外側面との距離を単位幅ブレーカ１個分の幅に形成してもよいし、前記取付部を同一方向を向いた断面Ｌ字状に形成し、一方の取付部の外側面と他方の取付部の外側面との距離を単位幅ブレーカ１個分の幅に形成してもよい。   In addition, the attachment portion that is paired in the short direction of the wide breaker is formed in an inward cross-sectional L shape, and the distance between the outer surface of one attachment portion and the outer surface of the other attachment portion is a unit width breaker. It may be formed with a width of one piece, or the mounting part is formed in an L-shaped cross section facing the same direction, and the distance between the outer surface of one mounting part and the outer surface of the other mounting part is a unit You may form in the width | variety for one width breaker.

或いは、前記幅広ブレーカの短手方向に対をなす前記取付部の一方を断面Ｌ字状とし、他方の取付部を断面逆Ｔ字状とし、かつ前記取付部の一方の取付部の外側面から他方の取付部の中心線までの距離を単位幅ブレーカ１個分の幅に形成することもできる。   Alternatively, one of the mounting portions paired in the short direction of the wide breaker has an L-shaped cross section, the other mounting portion has an inverted T-shaped cross section, and from the outer surface of one mounting portion of the mounting portion The distance to the center line of the other mounting portion can be formed to a width corresponding to one unit width breaker.

本発明に係るブレーカの取付構造は、幅広に形成した幅広ブレーカの底面に分電盤等の取付板に穿設された取付孔に係合する取付部を前記幅広ブレーカの短手方向に形成し、この取付部の距離を単位幅ブレーカ１個分の幅とすることによって、幅広ブレーカを単位幅ブレーカ取付用の取付板に取り付け可能としたものである。これにより、取付部の距離は単位幅ブレーカの取付部の間隔と同一になるので、取付孔の間隔、形状が異なる取付板にも使用でき、更に単位幅ブレーカ用の取付板を幅寸法の異なるブレーカにも共用できるうえ、幅の異なるブレーカを混在させることもできる。なお、本明細書において、「幅広ブレーカの短手方向」とは、幅広ブレーカの幅方向をいう。   In the breaker mounting structure according to the present invention, a mounting portion that engages with a mounting hole formed in a mounting plate such as a distribution board is formed in a short direction of the wide breaker on a bottom surface of the wide breaker formed wide. By setting the distance of the mounting portion to the width of one unit width breaker, the wide breaker can be mounted on the mounting plate for mounting the unit width breaker. As a result, the distance between the mounting portions is the same as the spacing between the mounting portions of the unit width breaker, so that the mounting holes can be used for mounting plates having different intervals and shapes, and the mounting plates for the unit width breakers have different width dimensions. In addition to being shared by breakers, breakers with different widths can be mixed. In the present specification, the “short direction of the wide breaker” refers to the width direction of the wide breaker.

また、前記幅広ブレーカの短手方向に対をなす取付部の一方を前記幅広ブレーカの底面側端部に形成し、他方を該幅広ブレーカの底面中央に形成することにより、取付板にブレーカを無駄なく配列することができる。   Further, by forming one of the mounting portions paired in the short direction of the wide breaker at the bottom side end of the wide breaker and forming the other at the center of the bottom of the wide breaker, the breaker is wasted on the mounting plate. Can be arranged without.

なお、前記幅広ブレーカの短手方向に対をなす取付部の形状は従来のように、内向きの断面Ｌ字状でもよいし、同一方向を向いた断面Ｌ字状としてもよい。   In addition, the shape of the attachment part which makes a pair in the transversal direction of the said wide breaker may be an inward cross-sectional L shape, and is good also as a cross-sectional L shape facing the same direction like the past.

或いは、前記幅広ブレーカの短手方向に対をなす取付部の他方の形状を断面逆Ｔ字状とすることもできる。取付部を断面逆Ｔ字状とすれば、取付孔の左右両側に係合させることができるので、断面Ｌ字状の場合よりも確実に取付板にブレーカを固定することができる。   Or the other shape of the attachment part which makes a pair in the transversal direction of the said wide breaker can also be made into reverse T-shaped cross section. If the mounting portion has an inverted T-shaped cross section, the left and right sides of the mounting hole can be engaged with each other, so that the breaker can be fixed to the mounting plate more reliably than in the case of the L-shaped cross section.

幅寸法の異なるブレーカの配列を示す説明図である。It is explanatory drawing which shows the arrangement | sequence of the breaker from which a width dimension differs. 単位幅ブレーカ取付用の取付板の斜視図である。It is a perspective view of the attachment plate for unit width breaker attachment. 単位幅ブレーカ取付用の取付板の上面図である。It is a top view of the attachment plate for unit width breaker attachment. ２倍幅ブレーカの斜視図である。It is a perspective view of a double width breaker. ２倍幅ブレーカの斜視図である。It is a perspective view of a double width breaker. ２倍幅ブレーカの取付孔への係合の仕方を示す説明図である。It is explanatory drawing which shows the method of engagement to the attachment hole of a double width breaker. 第１実施形態の背面図である。It is a rear view of 1st Embodiment. 第２実施形態の背面図である。It is a rear view of 2nd Embodiment. 第３実施形態の背面図である。It is a rear view of 3rd Embodiment. その他の実施形態の背面図である。It is a rear view of other embodiment. その他の実施形態の背面図である。It is a rear view of other embodiment. ２倍幅ブレーカのプラグ部の取り付け位置を示す要部拡大斜視図である。It is a principal part expansion perspective view which shows the attachment position of the plug part of a double width breaker. ２倍幅ブレーカの覆い板を示す正面図である。It is a front view which shows the cover plate of a double width breaker.

以下に本発明の好ましい実施形態を示す。
図２は単位幅ブレーカ取付用の取付板の斜視図、図３は単位幅ブレーカ取付用の取付板の上面図である。これらの図において、１は取付板、２はブレーカの底面前方に形成された取付部９（９Ａ，９Ｂ）が挿入係止される取付孔、３はブレーカの底面後方に形成された取付部９（９Ｃ，９Ｄ）が挿入係止される切欠部、４はブレーカの背面に形成された固定部が係止される固定部取付穴である。 Preferred embodiments of the present invention are shown below.
2 is a perspective view of a mounting plate for mounting a unit width breaker, and FIG. 3 is a top view of the mounting plate for mounting a unit width breaker. In these drawings, 1 is a mounting plate, 2 is a mounting hole into which a mounting portion 9 (9A, 9B) formed at the front of the bottom surface of the breaker is inserted and locked, and 3 is a mounting portion 9 formed at the rear of the bottom surface of the breaker. A notch portion in which (9C, 9D) is inserted and locked is a fixing portion mounting hole 4 in which a fixing portion formed on the back surface of the breaker is locked.

取付板１は横長長方形の薄板材をプレス加工したものであり、左右両端を下向きに屈曲し、中央には凹溝５が形成されている。この凹溝５には孔部を複数形成しており、母線バー取付部材などが設置される。取付板１の上面はこの凹溝５を介して左右の２面に区分され、各面には、凹溝５に対して垂直方向に複数の取付孔２と切欠部３とが等間隔に配列されている。なお、本実施形態に記載した構造以外に左右何れか1面に形成するものでも使用は可能である。この配列の間隔は、単位幅ブレーカ１個分の幅とブレーカ間に必要な空隙とを考慮して決められる。各取付孔２は略長方形の拡大孔部６と拡大孔部６より狭幅の小径孔部７とを連通させて形成したものであり、拡大孔部６は、ブレーカの取付部２コ分を挿入できる大きさに穿設されている。すなわち、１つの拡大孔部６は隣り合うブレーカの取付部９Ｂ，９Ａが挿入される大きさである。また各取付孔２の中心線の延長線上には、切欠部３が形成されている。この切欠部３の幅は取付孔２の小径孔部７と同一幅である。   The mounting plate 1 is formed by pressing a horizontally long rectangular thin plate material. The left and right ends are bent downward, and a concave groove 5 is formed at the center. A plurality of holes are formed in the concave groove 5, and a bus bar mounting member or the like is installed. The upper surface of the mounting plate 1 is divided into two left and right surfaces through the concave groove 5, and a plurality of mounting holes 2 and notches 3 are arranged at equal intervals in each surface in a direction perpendicular to the concave groove 5. Has been. In addition to the structure described in this embodiment, a structure formed on either the left or right side can be used. The interval of this arrangement is determined in consideration of the width of one unit width breaker and the gap required between the breakers. Each mounting hole 2 is formed by communicating a substantially rectangular enlarged hole portion 6 and a small-diameter hole portion 7 having a narrower width than the enlarged hole portion 6, and the enlarged hole portion 6 includes two breaker mounting portions. It is drilled to a size that can be inserted. That is, one enlarged hole portion 6 has such a size that the attachment portions 9B and 9A of the adjacent breakers are inserted. A notch 3 is formed on an extension of the center line of each mounting hole 2. The width of the notch 3 is the same as that of the small diameter hole 7 of the mounting hole 2.

図４及び図５は単位幅ブレーカに対し２倍幅の幅広に形成した２Ｐ用ブレーカの斜視図であり、８はブレーカの本体、９は本体底面に形成されブレーカ８の短手方向に対をなす取付部、１０は固定部取付穴４に係止してブレーカの左右のズレを防止する固定部である。なお、ブレーカ８の短手方向に形成した１対の取付部９と同様の取付部９をブレーカ８の長手方向に２組形成してある。取付部９は本体８の底面から垂直方向に延びる取付突起１１と取付突起１１の先端から水平方向に屈曲した鉤部１２とからなる。図２、図５及び図６に示すように、ブレーカは、本体８の底面前方の取付部９Ａ，９Ｂを拡大孔部６，６にそれぞれ挿入した後、本体８を小径孔部７方向にスライドすることにより、取付部９Ａ，９Ｂを小径孔部の縁１３Ａ，１３Ｂ、１３Ｃに係止させるとともに、後方の取付部９Ｃ，９Ｄを切欠部３，３の縁１４Ａ、１４Ｂ，１４Ｃに係止させることにより、取付板１に取付けられる。更に固定部１０を取付板２に向かって押し下げて固定部取付穴４に係止させ、完全に固定する。以下、取付部９の形状及び取付位置について実施形態ごとに詳述する。   4 and 5 are perspective views of the breaker for 2P formed to be twice as wide as the unit width breaker. 8 is a main body of the breaker, 9 is formed on the bottom surface of the main body, and a pair is formed in the short direction of the breaker 8. An attaching portion 10 is a fixing portion that is engaged with the fixing portion attaching hole 4 to prevent the breaker from being displaced from side to side. Two sets of attachment portions 9 similar to the pair of attachment portions 9 formed in the short direction of the breaker 8 are formed in the longitudinal direction of the breaker 8. The attachment portion 9 includes an attachment projection 11 extending in the vertical direction from the bottom surface of the main body 8 and a flange portion 12 bent in the horizontal direction from the tip of the attachment projection 11. As shown in FIGS. 2, 5, and 6, the breaker slides the main body 8 in the direction of the small-diameter hole 7 after inserting the attachment portions 9 </ b> A and 9 </ b> B in front of the bottom surface of the main body 8 into the enlarged holes 6 and 6, respectively. By doing so, the attachment portions 9A, 9B are locked to the edges 13A, 13B, 13C of the small-diameter holes, and the rear attachment portions 9C, 9D are locked to the edges 14A, 14B, 14C of the cutout portions 3, 3. Thus, the mounting plate 1 is attached. Further, the fixing portion 10 is pushed down toward the mounting plate 2 to be engaged with the fixing portion mounting hole 4 and completely fixed. Hereinafter, the shape and mounting position of the mounting portion 9 will be described in detail for each embodiment.

（第１実施形態）
第１実施形態の取付部９は、図７のように内向きの断面Ｌ字状をなし、一方の取付部９Ａ，９Ｃを本体８底面の側端部に形成し、他方の取付部９Ｂ，９Ｄを本体８の底面の略中央に形成する。ここで、一方の取付部９Ｃ（９Ａ）の外側面から他方の取付部９Ｄ（９Ｂ）の外側面までの距離Ｗ１は、単位幅ブレーカ１個分の幅である。このように取付部９間の距離Ｗ１を単位幅ブレーカの取付部の間隔と同一にしたので、単位幅ブレーカ用の取付板１を幅寸法の異なるブレーカにも共用できるうえ、幅の異なるブレーカを混在させることもできる。また、一方の取付部９Ａ，９Ｃを本体８底面の側端部に形成することにより、取付板２上にブレーカの幅寸法の相違によるデッドスペースが生じにくくなる。本実施形態における取付部９の係止の仕方は、背面視左側の取付部９Ａ，９Ｃの鉤部１２Ａ、１２Ｃは図２に示す小径孔部７の右側の縁１３Ａ及び切欠部３の右側の縁１４Ａに係止する。他方の取付部９Ｂ、９Ｄの鉤部１２Ｂ、１２Ｄは図２に示す小径孔部７の左側の縁１３Ｂ及び切欠部３の左側の縁１４Ｂに係止する。このような構造に形成することにより、取付部の距離は単位幅ブレーカの取付部の間隔と同一になるので、取付孔２の間隔や形状が異なる取付板１にも使用できる。更に、本実施形態の構造により、単位幅ブレーカ及び幅広ブレーカを取付板１に混在させて取付可能となるものである。 (First embodiment)
The attachment portion 9 of the first embodiment has an inward cross-sectional L shape as shown in FIG. 7, and one attachment portion 9A, 9C is formed at the side end of the bottom surface of the main body 8, and the other attachment portion 9B, 9D is formed substantially at the center of the bottom surface of the main body 8. Here, the distance W1 from the outer surface of one attachment portion 9C (9A) to the outer surface of the other attachment portion 9D (9B) is the width of one unit width breaker. Since the distance W1 between the mounting portions 9 is made the same as the interval between the mounting portions of the unit width breaker in this way, the mounting plate 1 for the unit width breaker can be shared with breakers having different width dimensions, and breakers having different widths can be used. It can also be mixed. Further, by forming the one attachment portion 9A, 9C at the side end portion of the bottom surface of the main body 8, a dead space due to the difference in the width of the breaker on the attachment plate 2 is less likely to occur. In the present embodiment, the attachment portion 9 is locked in such a manner that the flange portions 12A and 12C of the attachment portions 9A and 9C on the left side when viewed from the rear are the right edge 13A of the small diameter hole portion 7 and the right side of the notch portion 3 shown in FIG. Lock to edge 14A. The flange portions 12B and 12D of the other attachment portions 9B and 9D are engaged with the left edge 13B of the small-diameter hole 7 and the left edge 14B of the notch 3 shown in FIG. By forming in such a structure, the distance between the attachment portions becomes the same as the interval between the attachment portions of the unit width breakers, so that it can be used for the attachment plates 1 having different intervals and shapes of the attachment holes 2. Furthermore, the structure of the present embodiment enables unit width breakers and wide breakers to be mixed and attached to the mounting plate 1.

（第２実施形態）
第２実施形態のブレーカ８の短手方向に対をなす取付部９は、図８のように同一方向を向いた断面Ｌ字状である。なお、一方の取付部９Ｃ（９Ａ）を本体８底面の側端部に形成し、他方の取付部９Ｄ（９Ｂ）を本体８の底面の略中央に形成する点、及び一方の取付部９Ｃ（９Ａ）の外側面から他方の取付部９Ｄ（９Ｂ）の外側面までの距離Ｗ１が単位幅ブレーカ１個分の幅である点は、第１実施形態と同じである。本実施形態における背面視左側の取付部９Ａ，９Ｃの係止の仕方は第１実施形態と同じであるが、右側の取付部９Ｂ，９Ｄの係止の仕方が異なる。すなわち、取付部９Ｂの鉤部１２Ｂは図２に示す小径孔部７の右側の縁１３Ｃに係止し、取付部９Ｄの鉤部１２Ｄは切欠部３の右側の縁１４Ｃに係止する。 (Second Embodiment)
The attachment part 9 which makes a pair in the transversal direction of the breaker 8 of the second embodiment has an L-shaped cross section facing the same direction as shown in FIG. One attachment portion 9C (9A) is formed at the side end of the bottom surface of the main body 8, and the other attachment portion 9D (9B) is formed at the approximate center of the bottom surface of the main body 8, and one attachment portion 9C ( 9A) is the same as the first embodiment in that the distance W1 from the outer surface of 9A) to the outer surface of the other mounting portion 9D (9B) is the width of one unit width breaker. The method of locking the attachment portions 9A, 9C on the left side in the rear view in this embodiment is the same as that of the first embodiment, but the method of locking the right attachment portions 9B, 9D is different. That is, the flange portion 12B of the attachment portion 9B is engaged with the right edge 13C of the small diameter hole portion 7 shown in FIG. 2, and the flange portion 12D of the attachment portion 9D is engaged with the right edge 14C of the notch portion 3.

（第３実施形態）
第３実施形態では、ブレーカ８の短手方向に対をなす取付部９は、図９のように他方の取付部９Ｂ，９Ｄの形状を逆Ｔ字状に変形している。この取付部９Ｄ（９Ｂ）は、第１実施形態と第２実施形態の断面Ｌ字状の取付部９Ｄ（９Ｂ）、９Ｄ（９Ｂ）を結合させたものであり、一方の取付部９Ｃ（９Ａ）の外側面から他方の取付部９Ｄ（９Ｂ）の中心線までの距離Ｗ１を単位幅ブレーカ１個分の幅になるように形成する。本実施形態では、取付部９Ｂの取付突起１１Ｂから左右に延びる鉤部１２Ｂが図２に示す小径孔部７の左右の縁１３Ｂ，１３Ｃに係止し、取付部９Ｄの鉤部１２Ｄが切欠部３の左右の縁１４Ｂ，１４Ｃに係止するため、第１実施形態及び第２実施形態の場合よりも確実に取付板にブレーカを固定することができる。 (Third embodiment)
In the third embodiment, the attachment portion 9 that makes a pair in the short direction of the breaker 8 has the other attachment portions 9B and 9D deformed into an inverted T shape as shown in FIG. This attachment portion 9D (9B) is a combination of attachment portions 9D (9B) and 9D (9B) having an L-shaped cross section of the first and second embodiments, and one attachment portion 9C (9A). ) From the outer surface to the center line of the other mounting portion 9D (9B) so as to have a width corresponding to one unit width breaker. In the present embodiment, the flange 12B extending left and right from the attachment protrusion 11B of the attachment portion 9B is engaged with the left and right edges 13B and 13C of the small-diameter hole portion 7 shown in FIG. 2, and the flange 12D of the attachment portion 9D is notched. Since the three left and right edges 14B and 14C are engaged with each other, the breaker can be fixed to the mounting plate more securely than in the first and second embodiments.

（その他の実施形態）
以上の実施形態では単位幅ブレーカに対し２倍幅の幅広に形成したブレーカについて説明したが、図１０や図１１のように３倍幅のブレーカであっても差支えない。この場合における取付部９の形成位置は、上記と同様に一方を本体底面の側端部に設けてもよいし、図１１のように底面中央に寄せて形成してもよい。但し、底面中央に寄せた場合には、取付板２上にデッドスペースを生じさせない位置に取付部９を形成する必要がある。なお、本実施形態においては固定部１０を省略している。 (Other embodiments)
In the above embodiment, the breaker formed twice as wide as the unit width breaker has been described. However, a breaker having a triple width as shown in FIGS. 10 and 11 may be used. In this case, the attachment portion 9 may be formed at the side end of the bottom surface of the main body in the same manner as described above, or may be formed close to the center of the bottom surface as shown in FIG. However, when it is brought close to the center of the bottom surface, it is necessary to form the attachment portion 9 at a position where no dead space is generated on the attachment plate 2. In the present embodiment, the fixing part 10 is omitted.

なお図１２のように、本体６の前面には、底面と平行に凹部１５が３段形成されている。２段目及び３段目の凹部１５の内部には母線バー１６を挟み込むプラグ部１７が一段につき並列に２箇所、計４箇所形成されている。なお、図示しないが、各プラグ部の背面に接続された電線は本体１内において１つに集められ、他端がバイメタルに接続されている
。本実施形態では、２０Ａ用のプラグ部を並列することにより、大電流のものでも使用できるようになっている。また、並列に並んだプラグ部１７は、母線バー１６に段階的に噛み合うよう、前後にずらして形成されている。すなわち正面視右側のプラグ部１７Ａは左側のプラグ部１７Ｂに比べて凹部側へ奥まっている。これにより２つのプラグ部１７を同時に母線バー１６にプラグインする必要がなくなり、プラグ部１７を順次スムーズに母線バー１６へ噛み合わせることができる。 As shown in FIG. 12, the front surface of the main body 6 is formed with three recesses 15 parallel to the bottom surface. Inside the second-stage and third-stage recesses 15, plug parts 17 that sandwich the bus bar 16 are formed in two places in parallel, for a total of four places. In addition, although not shown in figure, the electric wire connected to the back surface of each plug part is gathered together in the main body 1, and the other end is connected to the bimetal. In the present embodiment, a 20A plug portion is arranged in parallel so that a large current can be used. Further, the plug portions 17 arranged in parallel are formed to be shifted back and forth so as to mesh with the bus bar 16 in a stepwise manner. That is, the plug portion 17A on the right side when viewed from the front is recessed toward the concave portion as compared with the plug portion 17B on the left side. As a result, it is not necessary to plug in the two plug portions 17 to the bus bar 16 at the same time, and the plug portions 17 can be sequentially and smoothly engaged with the bus bar 16.

また図２、図１３のように、最上段の凹部上面は、トリガレバーに形成された左右の調整ねじ１８を調整できるよう切り欠かれている。本実施形態では、本体８の右側面上端部に覆い板収納部１９を形成し、覆い板２０を挿入自在となしているので、ブレーカを組み立てた後でも覆い板２０を抜き取って調整ねじ１８を調整することができ、その後は元のように覆い板２０を挿し込んで埃や塵等の異物の侵入を阻止できる。   As shown in FIGS. 2 and 13, the upper surface of the uppermost recess is notched so that the left and right adjustment screws 18 formed on the trigger lever can be adjusted. In this embodiment, the cover plate storage portion 19 is formed at the upper right end portion of the main body 8 and the cover plate 20 can be inserted. Therefore, even after the breaker is assembled, the cover plate 20 is removed and the adjusting screw 18 is attached. After that, the cover plate 20 can be inserted as before to prevent entry of foreign matters such as dust and dirt.

以上に説明したように、本発明に係るブレーカの取付構造は、ブレーカの取付部を単位幅ブレーカの取付部と同一間隔（ピッチ）で形成したため、単位幅ブレーカ用の取付板を用いてもブレーカが抜け落ちることがなく、取付板の共用が可能となる。また、使用状況や目的に合わせて、単位幅の異なるブレーカを混在させることができる利点がある。   As described above, in the breaker mounting structure according to the present invention, since the breaker mounting portion is formed at the same interval (pitch) as the unit width breaker mounting portion, the breaker mounting plate can be used even when the mounting plate for the unit width breaker is used. The mounting plate can be shared without falling off. Further, there is an advantage that breakers having different unit widths can be mixed in accordance with the use situation and purpose.

１ 取付板
２ 取付孔
３ 切欠部
４ 固定部取付穴
５ 凹溝
６ 拡大孔部
７ 小径孔部
８ 本体
９ 取付部
１０ 固定部
１１ 取付突起
１２ 鉤部
１３ 小径孔部の縁
１４ 切欠部の縁
１５ 凹部
１６ 母線バー
１７ プラグ部
１８ 調整ねじ
１９ 覆い板収納部
２０ 覆い板
１００ 取付孔
１００ａ，１００ｂ，１００ｃ，１００ｄ 縁部
２００ 単位幅ブレーカ
３００ 幅広ブレーカ DESCRIPTION OF SYMBOLS 1 Mounting plate 2 Mounting hole 3 Notch part 4 Fixed part mounting hole 5 Concave groove 6 Enlarged hole part 7 Small diameter hole part 8 Main body 9 Mounting part 10 Fixing part 11 Mounting protrusion 12 Edge 13 Small diameter hole edge 14 Notch edge 15 recess 16 bus bar 17 plug 18 adjustment screw 19 cover plate storage 20 cover plate 100 mounting holes 100a, 100b, 100c, 100d edge 200 unit width breaker 300 wide breaker

Claims (5)

単位幅ブレーカに対し幅広に形成した幅広ブレーカを、単位幅ブレーカ取付用の取付板に取り付ける取付構造であって、
前記取付板には、単位幅ブレーカの底面側端部に形成された対をなす取付爪を挿入係止可能な取付孔が複数穿設され、
前記幅広ブレーカは底面に、前記取付孔に挿入係止される前記幅広ブレーカの短手方向に対をなす取付部を備え、
該取付部の一方と他方との距離を、前記単位幅ブレーカ１個分の幅に形成したことを特徴とするブレーカの取付構造。 A mounting structure in which a wide breaker formed wider than a unit width breaker is attached to a mounting plate for mounting a unit width breaker,
The mounting plate is provided with a plurality of mounting holes into which a pair of mounting claws formed on the bottom side end of the unit width breaker can be inserted and locked,
The wide breaker includes a mounting portion on the bottom surface that forms a pair in a short direction of the wide breaker inserted and locked into the mounting hole.
A breaker mounting structure, wherein a distance between one of the mounting portions and the other is formed to be a width corresponding to one unit width breaker. 前記幅広ブレーカの短手方向に対をなす前記取付部の一方を前記幅広ブレーカの底面側端部に形成し、他方を該幅広ブレーカの底面中央寄りに形成したことを特徴とする請求項１に記載のブレーカの取付構造。   The one of the attachment parts paired in the short direction of the wide breaker is formed at the bottom side end of the wide breaker, and the other is formed near the center of the bottom of the wide breaker. Breaker mounting structure as described. 前記幅広ブレーカの短手方向に対をなす前記取付部を内向きの断面Ｌ字状に形成し、一方の取付部の外側面と他方の取付部の外側面との距離を単位幅ブレーカ１個分の幅に形成したことを特徴とする請求項１又は請求項２に記載のブレーカの取付構造。   The mounting portion paired in the short direction of the wide breaker is formed in an inward cross-sectional L shape, and the distance between the outer surface of one mounting portion and the outer surface of the other mounting portion is one unit width breaker. The breaker mounting structure according to claim 1 or 2, wherein the breaker is formed to have a width of minutes. 前記幅広ブレーカの短手方向に対をなす前記取付部を同一方向に向いた断面Ｌ字状に形成し、一方の取付部の外側面と他方の取付部の外側面との距離を単位幅ブレーカ１個分の幅に形成したことを特徴とする請求項１又は請求項２に記載のブレーカの取付構造。   The mounting portion that forms a pair in the short direction of the wide breaker is formed in an L-shaped cross section facing in the same direction, and the distance between the outer surface of one mounting portion and the outer surface of the other mounting portion is a unit width breaker The breaker mounting structure according to claim 1 or 2, wherein the breaker is formed to have a width of one. 前記幅広ブレーカの短手方向に対をなす前記取付部の一方を断面Ｌ字状とし、他方の取付部を断面逆Ｔ字状とし、かつ前記取付部の一方の取付部の外側面から他方の取付部の中心線までの距離を単位幅ブレーカ１個分の幅に形成したことを特徴とする請求項１又は請求項２に記載のブレーカの取付構造。   One of the mounting portions paired in the short direction of the wide breaker has an L-shaped cross section, the other mounting portion has an inverted T-shaped cross section, and the other mounting surface from the outer surface of one mounting portion to the other The breaker mounting structure according to claim 1 or 2, wherein the distance to the center line of the mounting portion is formed to be a width corresponding to one unit width breaker.
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