JP4693141B2 - Circuit breaker terminal device - Google Patents

Circuit breaker terminal device Download PDF

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Publication number
JP4693141B2
JP4693141B2 JP2000376150A JP2000376150A JP4693141B2 JP 4693141 B2 JP4693141 B2 JP 4693141B2 JP 2000376150 A JP2000376150 A JP 2000376150A JP 2000376150 A JP2000376150 A JP 2000376150A JP 4693141 B2 JP4693141 B2 JP 4693141B2
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Prior art keywords
terminal
circuit breaker
electric wire
box
terminal device
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Expired - Fee Related
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JP2000376150A
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JP2002184293A (en
Inventor
光昭 助川
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河村電器産業株式会社
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  • Breakers (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、回路遮断器のねじ締め式の端子装置に関する。
【０００２】
【従来の技術】
図５に示すように、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２２を形成し、箱形端子金具２２の上板部２２ａに穿設した螺孔２２ｂに端子ねじ２３を螺合し、端部に固定接点２４ａが設けられた端子座２４を箱形端子金具２２の内部の底板部２２ｃに添装して成る回路遮断器の端子装置２１は、端子ねじ２３の外形の半径以下の電線２５を箱形端子金具２２に挿入し固定する場合、電線２５の位置によって端子ねじ２３の回転により図６（ａ）に示すように電線２５が回路遮断器内に引き込まれたり、図６（ｂ）に示すように回路遮断器から押し出されたりする。電線２５が回路遮断器内に引き込まれると、端子ねじ２３の先端で電線２５の被覆を噛んだり、端子座２４に設けられた固定接点２４ａまで電線が挿入されると、主回路のオン・オフができないという問題があり、また、電線２５が回路遮断器から押し出される方向に移動すると、電線２５が堅固に固定されず外れる虞があった。
【０００３】
そこで、電線２５が固定接点２４ａまで挿入されるのを防止するために、従来は、図７に示すように端子座２４の短手方向に別部材のストッパ部材２６を垂設したり、図８に示すように端子座２４の短手方向に断面略Ｌ字状のストッパ部材２７を螺子２８により固定したり、図９に示すように遮断器ケース２９の一部を突出させて電線２５の進入防止リブ３０を形成していた。また、電線２５が回路遮断器から押し出されるのを防止するために、図９に示すように端子ねじ２３の先端と端子座２４との間に端子ねじ２３の回転が伝わらないようにするための線押さえ板３１を介在させていた。
【０００４】
【発明が解決しようとする課題】
上記従来の図７に端子装置と図８に示す端子装置は、部品点数が増加するためコストが高くなり、図９に示す端子装置は、進入防止リブに強い力が加わると破損する虞があり、線押さえ板３１を設けると、部品点数が増加しコストが高くなり、而も箱形端子金具の電線の挿入口が狭くなるので箱形端子金具を大きくする必要があった。
【０００５】
【課題を解決するための手段】
上記従来の回路遮断器の端子装置の問題点に鑑み、本発明の目的は、部品点数を増加させることなく、電線が回路遮断器内に過度に挿入されるのを防止するとともに、電線を確実に固定することができる回路遮断器の端子装置を提供するもので、その構造は、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の底板部に添装して成る回路遮断器の端子装置において、端子座は、端子ねじの回転により電線が回路遮断器内に引き込まれる長手方向の端縁の少なくとも一方側に電線の進入を制限するストッパ部を一体に形成し、長手方向の端縁の他方側に電線を端子座の一方側へ誘う案内部を一体に形成したことである。
【０００６】
【発明の実施の形態】
本発明によれば、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の底板部に添装して成る回路遮断器の端子装置において、端子座は、端子ねじの回転により電線が回路遮断器内に引き込まれる長手方向に対して幅方向の端縁の少なくとも一方側に電線の進入を制限するストッパ部を一体に形成し、幅方向の端縁の他方側に電線を端子座の一方側へ誘う案内部を一体に形成したことにより、部品点数を増加させることなく、電線が回路遮断器内に過度に挿入されるのを防止するとともに、電線を確実に固定することができる。
【０００７】
【実施例】
本発明に係る回路遮断器の端子装置の第１実施例を図１及び図２の添付図面に基づいて説明する。
【０００８】
回路遮断器（図示せず）の端子装置１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２を形成し、箱形端子金具２の上板部２ａに穿設した螺孔２ｂに端子ねじ３を螺合し、端部に固定接点４ａが設けられた端子座４を箱形端子金具２の内部の底板部２ｃに添装して構成している。
【０００９】
長板状の端子座４は、端子ねじ３の外形の半径以下の電線５を箱形端子金具２に挿入し固定する際に端子座４の長手方向の一方側４ｂでは端子ねじ３の回転により電線５が回路遮断器内に引き込まれる。この端子座４の一方側４ｂの一部に切り込みを入れてＬ字状に長手方向に切り起こし、電線５が回路遮断器内に過度に挿入されないように電線５の進入を制限するストッパ部４ｃを形成している。
【００１０】
また、端子座４の他方側４ｄの端縁を端子座４の一方側４ｂの端縁方向に２本の切り込みを入れて切り起こし、端子ねじ３を締め付けた際に電線５を一方側４ｂへ誘う案内部４ｅを複数箇所に形成している。
【００１１】
箱形端子金具２に挿入された電線５は、端子ねじ３を締め付けると案内部４ｅに沿って端子座４の一方側４ｂに案内されるので押し出されることはなく、更に端子ねじ３を締め付けてもストッパ部４ｃにより電線５が引き込まれるのを制限するので、確実に固定することができる。
【００１２】
本発明に係る回路遮断器の端子装置の第２実施例を図３及び図４の添付図面に基づいて説明する。
【００１３】
回路遮断器（図示せず）の端子装置１１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１２を形成し、箱形端子金具１２の上板部１２ａに穿設した螺孔１２ｂに端子ねじ１３を螺合し、端部に固定接点１４ａが設けられた端子座１４を箱形端子金具１２の内部の底板部１２ｃに添装して構成している。
【００１４】
端子座１４は、展開時に長手方向の両端縁から突出する部分を折曲して箱形端子金具１２に挿入した電線１５が回路遮断器内に過度に挿入されないように電線１５の進入を制限するストッパ部１４ｃを形成している。
【００１５】
端子ねじ１３の外形の半径以下の電線１５を箱形端子金具１２に挿入し固定する際に端子座４の長手方向の一方側４ｂでは端子ねじ１３の回転により電線１５が回路遮断器内に引き込まれる。この端子座１４の一方側１４ｂに向けて他方側１４ｄの端縁に２本の切り込みを入れて切り起こし、端子ねじ１３を締め付けた際に電線１５を一方側１４ｂへ誘う案内部１４ｅを形成している。
【００１６】
箱形端子金具１２に挿入された電線１５は、端子ねじ１３を締め付けると案内部１４ｅに沿って端子座１４の一方側１４ｂに案内されるので押し出されることはなく、更に端子ねじ１３を締め付けてもストッパ部１４ｃにより電線１５が引き込まれるのを制限するので、確実に固定することができる。
【００１７】
本実施例において、端子座４の幅方向の両端縁にストッパ部１４ｃを形成したが、電線１５を固定する際に端子ねじ１３の回転により電線１５が回路遮断器１１内に引き込まれる一方側だけにストッパ部１４ｃを形成しても良い。
【００１８】
【発明の効果】
以上のように本発明に係る回路遮断器の端子装置は、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の底板部に添装して成る回路遮断器の端子装置において、端子座は、端子ねじの回転により電線が回路遮断器内に引き込まれる長手方向に対して幅方向の端縁の少なくとも一方側に電線の進入を制限するストッパ部を一体に形成し、幅方向の端縁の他方側に電線を端子座の一方側へ誘う案内部を一体に形成したことにより、部品点数を増加させることなく、電線が回路遮断器内に過度に挿入されるのを防止するとともに、電線を確実に固定することができるという効果がある。
【図面の簡単な説明】
【図１】 本発明の第１実施例に係る回路遮断器の端子装置を示す斜視図である。
【図２】 本発明の第１実施例に係る端子装置を示す分解斜視図である。
【図３】 本発明の第２実施例に係る回路遮断器の端子装置を示す斜視図である。
【図４】 本発明の第２実施例に係る端子装置を示す分解斜視図である。
【図５】 従来の回路遮断器の端子装置を示す斜視図である。
【図６】 従来の回路遮断器の端子装置において、（ａ）は電線が回路遮断器内に引き込まれる端子座の一方側に電線を接続する様子を示す平面図であり、（ｂ）は電線が回路遮断器から押し出される端子座の他方側に電線を接続する様子を示す平面図である。
【図７】 端子座にストッパ部材を垂設した従来の端子装置を示す縦断面図である。
【図８】 端子座に断面略Ｌ字状のストッパ部材を螺着した従来の端子装置を示す縦断面図である。
【図９】 電線の進入防止リブと線押さえ板を設けた従来の端子装置を示す縦断面図である。
【符号の説明】
１ 端子装置
２ 箱形端子金具
２ａ 上板部
２ｂ 螺孔
２ｃ 下板部
３ 端子ねじ
４ 端子座
４ａ 固定接点
４ｂ 一方側
４ｃ ストッパ部
４ｄ 他方側
５ 電線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a screw-type terminal device for a circuit breaker.
[0002]
[Prior art]
As shown in FIG. 5, the metal plate material is bent into a substantially rectangular shape in cross section, and the respective end portions are joined to form a box-shaped terminal fitting 22, which is formed in the upper plate portion 22 a of the box-shaped terminal fitting 22. A terminal device 21 for a circuit breaker comprising a terminal seat 24 having a fixed contact 24a at an end thereof and a bottom plate portion 22c inside the box-shaped terminal fitting 22 is screwed into a screw hole 22b. When the electric wire 25 having a radius less than the outer diameter of the terminal screw 23 is inserted and fixed to the box-shaped terminal fitting 22, the electric wire 25 is connected to the circuit as shown in FIG. It is drawn into the circuit breaker or pushed out of the circuit breaker as shown in FIG. When the electric wire 25 is drawn into the circuit breaker, the terminal of the terminal screw 23 bites the coating of the electric wire 25, or when the electric wire is inserted to the fixed contact 24a provided on the terminal seat 24, the main circuit is turned on / off. In addition, there is a problem that if the electric wire 25 moves in the direction of being pushed out of the circuit breaker, the electric wire 25 is not firmly fixed and may come off.
[0003]
Therefore, in order to prevent the electric wire 25 from being inserted up to the fixed contact 24a, conventionally, as shown in FIG. 7, a stopper member 26, which is a separate member, is suspended in the short direction of the terminal seat 24, or FIG. As shown in FIG. 9, a stopper member 27 having a substantially L-shaped cross section is fixed by a screw 28 in the short direction of the terminal seat 24, or a part of the circuit breaker case 29 is protruded as shown in FIG. The prevention rib 30 was formed. In order to prevent the electric wire 25 from being pushed out of the circuit breaker, the rotation of the terminal screw 23 is not transmitted between the tip of the terminal screw 23 and the terminal seat 24 as shown in FIG. The wire pressing plate 31 was interposed.
[0004]
[Problems to be solved by the invention]
The conventional terminal device shown in FIG. 7 and the terminal device shown in FIG. 8 are expensive because the number of parts increases, and the terminal device shown in FIG. 9 may be damaged when a strong force is applied to the ingress prevention rib. When the wire holding plate 31 is provided, the number of parts is increased and the cost is increased. In addition, since the insertion port for the electric wire of the box-type terminal fitting becomes narrow, it is necessary to enlarge the box-type terminal fitting.
[0005]
[Means for Solving the Problems]
In view of the problems of the conventional circuit breaker terminal device described above, the object of the present invention is to prevent the wires from being excessively inserted into the circuit breaker without increasing the number of components and to secure the wires. A circuit breaker terminal device that can be fixed to a metal plate is formed by bending a metal plate into a substantially rectangular cross-section and connecting the respective ends to form a box-shaped terminal fitting. A circuit in which a terminal screw is screwed into a screw hole drilled in the top plate of a box-type terminal fitting, and a terminal seat with a fixed contact at the end is attached to the bottom plate inside the box-type terminal fitting in the terminal device of the circuit breaker, terminals locus wires formed integrally with the stopper portion for restricting the entry of wire on at least one side of the longitudinal edges to be drawn into the circuit breaker by rotation of terminal screws, longitudinal integral guide portions invites wire on the other side in the direction of the edge to one side of the terminal seat It is that the formed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention, a metal plate material is bent into a substantially rectangular shape in cross section, and each end portion is joined to form a box-shaped terminal fitting, and a terminal is inserted into a screw hole drilled in the upper plate portion of the box-shaped terminal fitting. In a circuit breaker terminal device in which a screw is screwed and a terminal seat provided with a fixed contact at the end is attached to the bottom plate inside the box-type terminal fitting, the terminal seat is rotated by the rotation of the terminal screw. A stopper part that restricts entry of the electric wire is integrally formed on at least one side of the edge in the width direction with respect to the longitudinal direction in which the electric wire is drawn into the circuit breaker, and the electric wire is connected to the other side of the edge in the width direction. By integrally forming the guide part that invites to one side of the seat, it is possible to prevent the wire from being excessively inserted into the circuit breaker without increasing the number of parts and to securely fix the wire. it can.
[0007]
【Example】
A first embodiment of a terminal device for a circuit breaker according to the present invention will be described with reference to the attached drawings of FIGS.
[0008]
A terminal device 1 of a circuit breaker (not shown) includes a box-shaped terminal fitting 2 formed by bending a metal plate material into a substantially square-shaped cross section and joining the respective ends thereof. A terminal screw 3 is screwed into a screw hole 2b drilled in the plate portion 2a, and a terminal seat 4 provided with a fixed contact 4a at the end is attached to the bottom plate portion 2c inside the box-shaped terminal fitting 2. is doing.
[0009]
The long plate-like terminal seat 4 is formed by the rotation of the terminal screw 3 on one side 4b in the longitudinal direction of the terminal seat 4 when an electric wire 5 having a radius equal to or smaller than the outer diameter of the terminal screw 3 is inserted into the box-shaped terminal fitting 2 and fixed. The electric wire 5 is drawn into the circuit breaker. A stopper portion 4c that cuts a part of one side 4b of the terminal seat 4 and cuts and raises it in the longitudinal direction in an L-shape so as to prevent the wire 5 from being excessively inserted into the circuit breaker. Is forming.
[0010]
Further, the edge of the other side 4d of the terminal seat 4 is cut and raised in the direction of the edge of the one side 4b of the terminal seat 4, and when the terminal screw 3 is tightened, the electric wire 5 is moved to the one side 4b. The guiding part 4e to invite is formed in several places.
[0011]
When the terminal screw 3 is tightened, the electric wire 5 inserted into the box-type terminal fitting 2 is guided to the one side 4b of the terminal seat 4 along the guide portion 4e, and is not pushed out. Since the electric wire 5 is restricted from being pulled in by the stopper portion 4c, it can be reliably fixed.
[0012]
A second embodiment of a terminal device for a circuit breaker according to the present invention will be described with reference to the attached drawings of FIGS.
[0013]
A terminal device 11 of a circuit breaker (not shown) is formed by bending a metal plate material into a substantially rectangular shape in cross section and connecting each end to form a box-shaped terminal fitting 12. A terminal screw 13 is screwed into a screw hole 12b drilled in the plate portion 12a, and a terminal seat 14 provided with a fixed contact 14a at an end portion is attached to the bottom plate portion 12c inside the box-shaped terminal fitting 12. is doing.
[0014]
The terminal seat 14 limits the entry of the electric wire 15 so that the electric wire 15 inserted into the box-shaped terminal fitting 12 by bending a portion protruding from both longitudinal edges at the time of deployment is not excessively inserted into the circuit breaker. A stopper portion 14c is formed.
[0015]
When the electric wire 15 having a radius equal to or smaller than the outer diameter of the terminal screw 13 is inserted and fixed to the box-shaped terminal fitting 12, the electric wire 15 is drawn into the circuit breaker by the rotation of the terminal screw 13 on one side 4b in the longitudinal direction of the terminal seat 4. It is. A guide portion 14e is formed to cut and raise two cuts at the edge of the other side 14d toward the one side 14b of the terminal seat 14, and to guide the electric wire 15 to the one side 14b when the terminal screw 13 is tightened. ing.
[0016]
When the terminal screw 13 is tightened, the electric wire 15 inserted into the box-shaped terminal fitting 12 is not pushed out because it is guided to the one side 14b of the terminal seat 14 along the guide portion 14e, and the terminal screw 13 is further tightened. In addition, since the electric wire 15 is restricted from being pulled in by the stopper portion 14c, it can be reliably fixed.
[0017]
In this embodiment, the stopper portions 14c are formed at both end edges in the width direction of the terminal seat 4, but when the electric wire 15 is fixed, the electric wire 15 is drawn into the circuit breaker 11 by the rotation of the terminal screw 13. Alternatively, the stopper portion 14c may be formed.
[0018]
【The invention's effect】
As described above, the terminal device for a circuit breaker according to the present invention is configured such that a metal plate material is bent into a substantially rectangular cross section, and ends thereof are joined to form a box-shaped terminal fitting, In a terminal device for a circuit breaker, in which a terminal screw is screwed into a screw hole formed in a plate portion, and a terminal seat having a fixed contact at an end portion is attached to a bottom plate portion inside a box-shaped terminal fitting. , the terminal seat, the wire is formed integrally with the stopper portion for restricting the entry of wire on at least one side in the width direction of the edge with respect to the longitudinal direction drawn in the circuit breaker by rotation of terminal screws, the width direction By integrally forming a guide part for guiding the electric wire to one side of the terminal seat on the other side of the edge of the wire, it is possible to prevent the electric wire from being excessively inserted into the circuit breaker without increasing the number of parts. In addition, there is an effect that the electric wire can be securely fixed.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a terminal device of a circuit breaker according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a terminal device according to a first embodiment of the present invention.
FIG. 3 is a perspective view showing a circuit breaker terminal device according to a second embodiment of the present invention;
FIG. 4 is an exploded perspective view showing a terminal device according to a second embodiment of the present invention.
FIG. 5 is a perspective view showing a terminal device of a conventional circuit breaker.
6A is a plan view showing a state in which an electric wire is connected to one side of a terminal seat in which the electric wire is drawn into the circuit breaker, and FIG. It is a top view which shows a mode that an electric wire is connected to the other side of the terminal seat extruded from a circuit breaker.
FIG. 7 is a longitudinal sectional view showing a conventional terminal device in which a stopper member is suspended from a terminal seat.
FIG. 8 is a longitudinal sectional view showing a conventional terminal device in which a stopper member having a substantially L-shaped cross section is screwed to a terminal seat.
FIG. 9 is a longitudinal sectional view showing a conventional terminal device provided with a wire entry prevention rib and a wire pressing plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Terminal device 2 Box-shaped terminal metal fitting 2a Upper board part 2b Screw hole 2c Lower board part 3 Terminal screw 4 Terminal seat 4a Fixed contact 4b One side 4c Stopper part 4d The other side 5 Electric wire

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の底板部に添装して成る回路遮断器の端子装置において、前記端子座は、前記端子ねじの回転により前記回路遮断器内に電線が引き込まれる長手方向に対して幅方向の端縁の少なくとも一方側に前記電線の進入を制限するストッパ部を一体に形成し、幅方向の端縁の他方側に前記電線を前記端子座の一方側へ誘う案内部を一体に形成し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. A terminal device of a circuit breaker comprising a terminal seat provided with a fixed contact at an end attached to a bottom plate portion inside the box-type terminal fitting, wherein the terminal seat is rotated by the terminal screw. A stopper portion for restricting the entry of the electric wire is integrally formed on at least one side of the edge in the width direction with respect to the longitudinal direction in which the electric wire is drawn into the circuit breaker, and the electric wire is provided on the other side of the edge in the width direction. A terminal device for a circuit breaker, wherein a guide portion for guiding the terminal seat to one side is formed integrally.
JP2000376150A 2000-12-11 2000-12-11 Circuit breaker terminal device Expired - Fee Related JP4693141B2 (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100459215B1 (en) * 2001-12-07 2004-12-03 엘지산전 주식회사 connection structure between terminal of MCCB and Circuit Breaker Terminal
KR100670993B1 (en) 2004-10-07 2007-01-17 엘에스산전 주식회사 Structural terminal of coil terminal
CZ300276B6 (en) * 2005-08-30 2009-04-08 Oez S. R. O. Terminal for electric appliances, particularly circuit breakers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013180U (en) * 1973-05-30 1975-02-12
JPS5152889U (en) * 1974-10-17 1976-04-22
JPS5412082U (en) * 1977-06-28 1979-01-26
JPS55170766U (en) * 1979-05-25 1980-12-08
JPS5955861U (en) * 1982-10-04 1984-04-12 旭東電気株式会社 Wire connection part of electrical equipment case
JPS61156180U (en) * 1985-03-18 1986-09-27
JPS6393044U (en) * 1986-12-08 1988-06-16

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5013180U (en) * 1973-05-30 1975-02-12
JPS5152889U (en) * 1974-10-17 1976-04-22
JPS5412082U (en) * 1977-06-28 1979-01-26
JPS55170766U (en) * 1979-05-25 1980-12-08
JPS5955861U (en) * 1982-10-04 1984-04-12 旭東電気株式会社 Wire connection part of electrical equipment case
JPS61156180U (en) * 1985-03-18 1986-09-27
JPS6393044U (en) * 1986-12-08 1988-06-16

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