JP2009187719A - Terminal device of circuit breaker - Google Patents

Terminal device of circuit breaker Download PDF

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Publication number
JP2009187719A
JP2009187719A JP2008024639A JP2008024639A JP2009187719A JP 2009187719 A JP2009187719 A JP 2009187719A JP 2008024639 A JP2008024639 A JP 2008024639A JP 2008024639 A JP2008024639 A JP 2008024639A JP 2009187719 A JP2009187719 A JP 2009187719A
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terminal
circuit breaker
terminal fitting
box
screw
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JP2008024639A
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JP5131974B2 (en
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Hiroyuki Nomura
啓幸 野村
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Kawamura Electric Inc
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Kawamura Electric Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a terminal device of a circuit breaker having a structure capable of preventing rotation of a terminal seat with a simple structure. <P>SOLUTION: This terminal device of a circuit breaker is composed by bending a metal sheet material into a cross-sectionally substantially-rectangular shape to form box-shaped terminal fittingss by connecting respective ends to each other, screwing a terminal screw to a screw hole bored on an upper plate part of the box-shaped terminal fittings, and mounting a terminal seat with a fixed contact formed at an end in the box-shaped terminal fittings, and is characterized in that ear pieces are protruded on a wire insertion opening side of the terminal fittings and its opposite side, and engagement parts are formed at positions of the circuit breaker facing the ear pieces. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、金属板材を断面略ロ字状に折曲し夫々の端部を結合して箱形端子金具を形成し、箱形端子金具の上板部に穿設した螺孔に端子ねじを螺合し、端部に固定接点が設けられた端子座を箱形端子金具の内部に添装して成る回路遮断器の端子装置に関するものである。   In the present invention, a metal plate material is bent into a substantially rectangular cross section, and each end portion is joined to form a box-shaped terminal fitting, and a terminal screw is inserted into a screw hole formed in the upper plate portion of the box-shaped terminal fitting. The present invention relates to a terminal device for a circuit breaker in which a terminal seat, which is screwed and provided with a fixed contact at an end, is attached to the inside of a box-type terminal fitting.

回路遮断器３１は、樹脂製のケース３２に部品を組み込んで構成される。回路遮断器３１の端子部３３には、端子金具３４が備えられており、端子金具３４上面には螺孔３５が設けられる。回路遮断器３１のケース３２の側面には電線挿入口３６が形成されており、電線挿入口３６へ挿入された電線は、端子金具３４に導入される。螺孔３５に端子ねじを挿通し、端子ねじを締め付け電線を端子部３３に接続する。
特開２００２−１８４２９３号公報 The circuit breaker 31 is configured by incorporating components into a resin case 32. The terminal portion 33 of the circuit breaker 31 is provided with a terminal fitting 34, and a screw hole 35 is provided on the upper surface of the terminal fitting 34. An electric wire insertion port 36 is formed on the side surface of the case 32 of the circuit breaker 31, and the electric wire inserted into the electric wire insertion port 36 is introduced into the terminal fitting 34. A terminal screw is inserted into the screw hole 35, the terminal screw is tightened, and the electric wire is connected to the terminal portion 33.
JP 2002-184293 A

電線を端子部３３に接続する際に、確実に取り付けたいために端子ねじを強く回転させがちであり、端子ねじを締め付けることで端子金具３４が回動することがあった。端子金具３４は樹脂製のケース３２で被覆されるが、回路遮断器３１の小型化に伴い、ケース３２は薄く成形されている。特に短手幅の側面部分は薄く形成されている。端子ねじを締め付ける動作により端子金具３４が回動すると、ケース３２の薄い部分に端子金具３４の角部が当たってしまい、ケース３２を開けてしまったり、湾曲させてしまったりする虞があった。ケース３２が容易に開かないような構造にしたり、湾曲しにくい材料に変更したりして、回路遮断器３１の製造コストの上昇を招いていた。   When the electric wire is connected to the terminal portion 33, the terminal screw tends to be strongly rotated in order to be surely attached, and the terminal fitting 34 may be rotated by tightening the terminal screw. Although the terminal fitting 34 is covered with a resin case 32, the case 32 is thinly formed with the miniaturization of the circuit breaker 31. In particular, the side portion of the short width is formed thin. When the terminal fitting 34 is rotated by the operation of tightening the terminal screw, the corner portion of the terminal fitting 34 hits a thin portion of the case 32, and there is a possibility that the case 32 may be opened or curved. The structure of the case 32 is not easily opened, or the material is changed to a material that is difficult to bend, leading to an increase in the manufacturing cost of the circuit breaker 31.

そこで本発明は、簡単な構造で、端子座の回動を防止できる構造の回路遮断器の端子装置を提供することを目的とし、その構造は、端子金具の挿入部側に耳片を突設すると共に、回路遮断器の耳片と対向する位置に係合部とを設けたことを特徴とする。   Therefore, the present invention has an object to provide a circuit breaker terminal device having a simple structure and capable of preventing the rotation of the terminal seat, and the structure has an ear piece protruding from the insertion portion side of the terminal fitting. In addition, an engaging portion is provided at a position facing the ear piece of the circuit breaker.

本発明に係る回路遮断器の端子装置は、端子金具の挿入部側に耳片を突設すると共に、回路遮断器の耳片と対向する位置に係合部とを設けたため、構造が簡単にも関わらず、確実に端子金具を固定することができる。端子金具が端子ねじの締め付けの際に回動した場合にも、耳片により少しの回動で抑えられるので、端子金具の角部は、ケースの肉厚の部分に当たり外部への影響はない。   The terminal device for a circuit breaker according to the present invention has a simple structure because an ear piece projects from the insertion portion side of the terminal fitting and an engaging portion is provided at a position facing the ear piece of the circuit breaker. Nevertheless, the terminal fitting can be securely fixed. Even when the terminal fitting is rotated when the terminal screw is tightened, it is suppressed by a slight rotation by the ear piece, so that the corner portion of the terminal fitting hits the thick part of the case and does not affect the outside.

本発明に係る回路遮断器の端子装置の実施例を図１〜図４の添付図面に基いて説明する。   An embodiment of a terminal device for a circuit breaker according to the present invention will be described with reference to the accompanying drawings of FIGS.

回路遮断器１は、ケース２に電源側端子３ａ、負荷側端子３ｂ、ハンドルユニット４等を設け、固定接触子５、可動接触子６、過電流引き外し装置７等を備え構成される。回路遮断器１内で電流は、電源側端子３ａから固定接触子５、可動接触子６等を経て、過電流引き外し装置７を通って負荷側端子３ｂへと流れている。図１に示すようにオン状態では、ハンドルユニット４が可動接触子６を押した状態で、固定接触子５に可動接触子６が接触しているため通電される。また図２に示すようにオフ状態では、ハンドルユニット４が固定接触子５を引いた状態で、固定接触子５に可動接触子６が接触しないため通電されない。   The circuit breaker 1 is provided with a power source side terminal 3a, a load side terminal 3b, a handle unit 4 and the like in a case 2, and includes a fixed contact 5, a movable contact 6, an overcurrent tripping device 7 and the like. In the circuit breaker 1, current flows from the power supply side terminal 3a to the load side terminal 3b through the overcurrent tripping device 7 through the fixed contact 5, the movable contact 6 and the like. As shown in FIG. 1, in the ON state, the movable contact 6 is in contact with the fixed contact 5 while the handle unit 4 pushes the movable contact 6, so that power is supplied. As shown in FIG. 2, in the off state, the movable contact 6 is not in contact with the fixed contact 5 in the state in which the handle unit 4 pulls the fixed contact 5, so that no power is supplied.

本発明は、端子３に端子ねじ８によるねじ止めで電線を接続するタイプの回路遮断器１の端子構造である。端子３には、端子ねじ８を受けるために端子金具９を備えている。端子金具９は金属板材を断面略ロ字状に折曲し夫々の端部を結合して箱形に形成している。この端子金具９の上板部９ａには端子ねじ８が挿通可能である螺孔１０を形成する。端子金具９の内部に端子座１１を添装している。   The present invention is a terminal structure of a circuit breaker 1 of a type in which an electric wire is connected to a terminal 3 by screwing with a terminal screw 8. The terminal 3 is provided with a terminal fitting 9 for receiving the terminal screw 8. The terminal fitting 9 is formed in a box shape by bending a metal plate material into a substantially square cross section and connecting the respective ends. A screw hole 10 through which a terminal screw 8 can be inserted is formed in the upper plate portion 9a of the terminal fitting 9. A terminal seat 11 is attached inside the terminal fitting 9.

電線を端子３に接続するには、ケース２に設けられている電線導入口１２に電線を差し込むと、端子金具９の断面略ロ字状に形成された挿入部１３に挿入される。上板部９ａの螺孔１０から端子ねじ８を締め付け、端子座１１を端子金具９の底板部９ｂに押さえつけることで電線を挟み込み固定する。   In order to connect the electric wire to the terminal 3, when the electric wire is inserted into the electric wire introduction port 12 provided in the case 2, the electric wire is inserted into the insertion portion 13 formed in a substantially rectangular shape in cross section of the terminal fitting 9. The terminal screw 8 is tightened from the screw hole 10 of the upper plate portion 9a, and the terminal seat 11 is pressed against the bottom plate portion 9b of the terminal fitting 9 to sandwich and fix the electric wire.

端子金具９はケース２の内壁に当接されており、奥行き方向の内壁に当接させるように端子金具９は配置される。端子金具９の挿入部１３側および、その反対側にに耳片１４，１４を突設する。また、ケース２の内壁の、耳片１４，１４と対向する位置に係合部１５，１５を設ける。   The terminal fitting 9 is in contact with the inner wall of the case 2, and the terminal fitting 9 is arranged so as to contact the inner wall in the depth direction. Ear pieces 14 and 14 are projected from the insertion portion 13 side of the terminal fitting 9 and the opposite side thereof. In addition, engagement portions 15 and 15 are provided on the inner wall of the case 2 at positions facing the ear pieces 14 and 14.

端子ねじ８を締め付けると、端子金具９が回動する矢印方向へ力がかかる。回路遮断器１の小型化に伴って、樹脂製のケース２も薄く成形されている。特に短手幅の側面部は薄く成形されているので、力が加わるとケース２のあわせが開いてしまったり、ケース２が湾曲してしまったりする。本発明は、端子金具９に耳片１４が突設されており、耳片１４はケース２に設けられた係合部１５に係合しているため、端子金具９はケース２に確実に固定され、端子ねじ８を螺孔１０に挿通し締め付けた場合にも、端子金具９が回動できない。また、端子ねじの動きに連動して回動する力が加わった場合でも、端子金具９の角部はケース２に設けられた端子金具固定用の内壁に当たるため、肉厚な部分でさらに回動を防いだりできるし、ケース２の外部への影響はない。   When the terminal screw 8 is tightened, a force is applied in the direction of the arrow in which the terminal fitting 9 rotates. With the miniaturization of the circuit breaker 1, the resin case 2 is also thinly formed. In particular, since the side portion of the short width is thinly formed, when force is applied, the matching of the case 2 is opened or the case 2 is curved. In the present invention, since the ear piece 14 protrudes from the terminal fitting 9 and the ear piece 14 is engaged with the engaging portion 15 provided in the case 2, the terminal fitting 9 is securely fixed to the case 2. Even when the terminal screw 8 is inserted into the screw hole 10 and tightened, the terminal fitting 9 cannot be rotated. Further, even when a force that rotates in conjunction with the movement of the terminal screw is applied, the corner of the terminal fitting 9 hits the inner wall for fixing the terminal fitting provided in the case 2, so that it is further rotated at the thick part. Can be prevented, and the outside of Case 2 is not affected.

回路遮断器のオン状態を示す断面図である。It is sectional drawing which shows the ON state of a circuit breaker. 回路遮断器のオフ状態を示す断面図である。It is sectional drawing which shows the OFF state of a circuit breaker. 本発明に係る回路遮断器の端子装置を示す正面断面図である。It is front sectional drawing which shows the terminal device of the circuit breaker which concerns on this invention. 本発明に係る回路遮断器の端子装置を示す斜視図である。It is a perspective view which shows the terminal device of the circuit breaker which concerns on this invention. 従来の回路遮断器の端子装置を示す正面断面図である。It is front sectional drawing which shows the terminal device of the conventional circuit breaker.

符号の説明Explanation of symbols

１ 回路遮断器
２ ケース
３ 端子
３ａ 電源側端子
３ｂ 負荷側端子
４ ハンドルユニット
５ 固定接触子
６ 可動接触子
７ 過電流引き外し装置
８ 端子ねじ
９ 端子金具
９ａ 上板部
９ｂ 底板部
１０ 螺孔
１１ 端子座
１２ 電線導入口
１３ 挿入部
１４ 耳片
１５ 係合部 DESCRIPTION OF SYMBOLS 1 Circuit breaker 2 Case 3 Terminal 3a Power supply side terminal 3b Load side terminal 4 Handle unit 5 Fixed contact 6 Movable contact 7 Overcurrent trip device 8 Terminal screw 9 Terminal metal fitting 9a Top plate part 9b Bottom plate part 10 Screw hole 11 Terminal seat 12 Electric wire introduction port 13 Insertion part 14 Ear piece 15 Engagement part

Claims (1)

金属板材を断面略ロ字状に折曲し夫々の端部を結合して箱形端子金具を形成し、該箱形端子金具の上板部に穿設した螺孔に端子ねじを螺合し、端部に固定接点が設けられた端子座を前記箱形端子金具の内部に添装して成る回路遮断器の端子装置において、前記端子金具の挿入部側に耳片を突設すると共に、前記回路遮断器の前記耳片と対向する位置に係合部とを設けたことを特徴とする回路遮断器の端子装置。   A metal plate material is bent into a substantially rectangular cross section, and the respective ends are joined to form a box-shaped terminal fitting, and a terminal screw is screwed into a screw hole formed in the upper plate portion of the box-shaped terminal fitting. In the terminal device of the circuit breaker formed by attaching a terminal seat provided with a fixed contact at the end to the inside of the box-type terminal fitting, an ear piece projects from the insertion portion side of the terminal fitting, A terminal device for a circuit breaker, wherein an engaging portion is provided at a position facing the ear piece of the circuit breaker.
JP2008024639A 2008-02-05 2008-02-05 Circuit breaker terminal device Active JP5131974B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008024639A JP5131974B2 (en) 2008-02-05 2008-02-05 Circuit breaker terminal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008024639A JP5131974B2 (en) 2008-02-05 2008-02-05 Circuit breaker terminal device

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JP2009187719A true JP2009187719A (en) 2009-08-20
JP5131974B2 JP5131974B2 (en) 2013-01-30

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59130354U (en) * 1983-02-21 1984-09-01 富士電機株式会社 Terminal mechanism of circuit breakers
JP3034167U (en) * 1996-07-30 1997-02-14 旭東電気株式会社 Terminal part of electrical equipment
JP2001052772A (en) * 1999-08-02 2001-02-23 Sumitomo Wiring Syst Ltd Mounting structure of round plate terminal

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59130354U (en) * 1983-02-21 1984-09-01 富士電機株式会社 Terminal mechanism of circuit breakers
JP3034167U (en) * 1996-07-30 1997-02-14 旭東電気株式会社 Terminal part of electrical equipment
JP2001052772A (en) * 1999-08-02 2001-02-23 Sumitomo Wiring Syst Ltd Mounting structure of round plate terminal

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