JPH0142926Y2 - - Google Patents

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Publication number
JPH0142926Y2
JPH0142926Y2 JP1983202044U JP20204483U JPH0142926Y2 JP H0142926 Y2 JPH0142926 Y2 JP H0142926Y2 JP 1983202044 U JP1983202044 U JP 1983202044U JP 20204483 U JP20204483 U JP 20204483U JP H0142926 Y2 JPH0142926 Y2 JP H0142926Y2
Authority
JP
Japan
Prior art keywords
plate
arc
arc extinguishing
contact
fitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP1983202044U
Other languages
Japanese (ja)
Other versions
JPS60107556U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP20204483U priority Critical patent/JPS60107556U/en
Publication of JPS60107556U publication Critical patent/JPS60107556U/en
Application granted granted Critical
Publication of JPH0142926Y2 publication Critical patent/JPH0142926Y2/ja
Granted legal-status Critical Current

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Description

【考案の詳細な説明】 [技術分野] 本考案は筐体内における消弧室を開閉機構部か
ら隔離した配線用遮断器の消弧装置に関するもの
である。
[Detailed Description of the Invention] [Technical Field] The present invention relates to an arc extinguishing device for a molded case circuit breaker in which an arc extinguishing chamber within a housing is isolated from an opening/closing mechanism.

[背景技術] 配線用遮断器の消弧装置は一般に発弧部から延
出された一対のアーク走行板間に消弧グリツドを
設けたものを筐体の消弧室内に配設することで構
成されているが、この消弧室内を開閉機構部から
隔離するにあたつては、従来消弧グリツドと開閉
機構部との間に絶縁板を配設し、また固定接点が
設けられている固定端子板が遮断時の電磁駆動力
で後退することを防ぐために、固定端子板から延
出されている一方のアーク走行板に設けた突起を
筐体に係合させていたのであるが、短絡遮断時に
おけるガス圧力で絶縁板が浮き上がつて内部アー
ク短絡を引き起こしていた上に、電磁反発力によ
りアーク走行板の筐体との係合部が曲がつてしま
つて固定接点の後退による接点圧低下を招いてい
た。
[Background Art] An arc extinguishing device for a molded circuit breaker is generally constructed by disposing an arc extinguishing grid between a pair of arc traveling plates extending from an arcing part within an arc extinguishing chamber of a housing. However, in order to isolate this arc extinguishing chamber from the opening/closing mechanism, conventionally an insulating plate is placed between the arc extinguishing grid and the opening/closing mechanism, and a fixed contact is provided. In order to prevent the terminal board from retreating due to the electromagnetic driving force at the time of disconnection, a protrusion provided on one of the arc running plates extending from the fixed terminal board was engaged with the housing; At the time, the gas pressure caused the insulating plate to lift up, causing an internal arc short circuit, and the electromagnetic repulsion caused the part of the arc running plate that engaged with the casing to bend, causing contact pressure due to the retreat of the fixed contact. It was causing a decline.

[考案の目的] 本考案はこのような点に鑑み為されたものであ
り、その目的とするところは筐体内部での異極間
短絡及び同極間短絡がなく、また接点圧の低下を
生じることがない配線用遮断器の消弧装置を提供
するにある。
[Purpose of the invention] The present invention was devised in view of the above points, and its purpose is to eliminate short circuits between different poles and short circuits between the same poles inside the casing, and to prevent a drop in contact pressure. An object of the present invention is to provide an arc extinguishing device for a molded case circuit breaker that does not cause arcing.

[考案の開示] しかして本考案は、筐体内の消弧室内に発弧部
より延出された一対のアーク走行板を配設すると
ともに両アーク走行板間に消弧グリツドを配設
し、消弧グリツドの排気側に筐体の底部より立設
された筐体と一体の遮蔽壁を位置させてこの遮蔽
壁に形成されている排気通路としての縦溝を消弧
グリツドの排気側に配し、発弧部に位置する固定
接点と接続用端子板とをつなぐ連結枠を遮蔽壁の
周囲に配設し、筐体の消弧室の縁部及び遮蔽壁に
接するとともに固定接点背面と一方のアーク走行
板背面に当接する絶縁台を設けて絶縁台で連結枠
を押さえ固定したことに特徴を有するものであ
り、遮蔽壁とで消弧室を開閉機構部から隔離して
消弧室内の密閉化を行なう絶縁台で連結枠の固定
及び固定接点やアーク走行板の電磁反発力による
移動を阻止したものである。
[Disclosure of the invention] Accordingly, the present invention includes disposing a pair of arc traveling plates extending from the arc generating part in an arc extinguishing chamber in a housing, and disposing an arc extinguishing grid between both arc traveling plates, A shielding wall integral with the casing, which stands up from the bottom of the casing, is positioned on the exhaust side of the arc extinguishing grid, and a vertical groove as an exhaust passage formed in this shielding wall is arranged on the exhaust side of the arc extinguishing grid. A connecting frame connecting the fixed contact located in the arcing part and the connection terminal board is arranged around the shielding wall, and is in contact with the edge of the arc extinguishing chamber of the casing and the shielding wall, and is connected to the back of the fixed contact on one side. The feature is that an insulating stand is provided that comes into contact with the back of the arc traveling plate, and the connecting frame is held and fixed by the insulating stand, and the shielding wall isolates the arc extinguishing chamber from the opening/closing mechanism. This is an insulating stand that seals the connection frame and prevents movement of the fixed contacts and arc traveling plate due to electromagnetic repulsion.

以下本考案を一実施例として掲げた図面に基づ
いて説明すると、1は遮断器の筐体で、上面が開
口している器台2とこの器台2の上面に取り付け
られる上蓋3とで構成された合成樹脂製のもので
あり、器台2の長手方向一端には電源側端子装置
8が、他端には負荷側端子装置9が設けられてい
る。また器台2の内部はこの器台2と一体に長手
方向に形成された隔壁4と隔壁4上面に形成され
ている溝5に差し込まれる絶縁セパレータ6とで
数室に仕切られている。尚、隔壁4における溝5
は数個に分割され、隔壁4の強度低下とセパレー
タ6の誤装着とに対する対策とされている。また
図示の例では3極型であることから隔壁4を2個
としているが、2極型の場合は1個となる。
The present invention will be explained below based on the drawings showing one embodiment of the invention. Reference numeral 1 denotes a case of a circuit breaker, which is composed of a base 2 whose top surface is open and a top cover 3 attached to the top surface of the base 2. A power supply side terminal device 8 is provided at one longitudinal end of the device stand 2, and a load side terminal device 9 is provided at the other end. The interior of the container stand 2 is partitioned into several chambers by a partition wall 4 formed integrally with the container stand 2 in the longitudinal direction and an insulating separator 6 inserted into a groove 5 formed on the upper surface of the partition wall 4. Note that the groove 5 in the partition wall 4
The separator 6 is divided into several pieces as a countermeasure against a decrease in the strength of the partition wall 4 and the incorrect attachment of the separator 6. Furthermore, in the illustrated example, there are two partition walls 4 because it is a three-pole type, but in the case of a two-pole type, there is one.

前記電源側端子装置8は、第11図に示すよう
に器台2一端の端子座15上面に固定ねじにて固
定される角形ナツト13と、ナツト13のねじ孔
14にねじ込まれる端子ねじ11、そして端子ね
じ11が挿通されるばか孔12を水平片に有する
L字型端子金具10とで構成されたものであり、
端子ねじ11と角形ナツト13で端子金具10が
挟持されている。そして端子金具10の立ち上が
り片には連結枠19が固着されている。この連結
枠19は上下に開口する矩形状に形成されたもの
であつて、長手方向一端が端子金具10に固着さ
れ、他端に固定端子板21が固着されているもの
である。固定端子板21はT字型をして中片に固
定接点20が設けられたもので上部水平片が連結
枠19に固着されており、中片先端からは連結枠
19の両側片の下部間に位置する上側アーク走行
板22が延設されている。そして連結枠19はそ
の両側片が器台2における隔壁4及び側壁の内側
受段23に載せられるものであり、端子座15と
により長い連結枠19は器台2の底壁から浮かさ
れているものの安定した状態で位置する。
As shown in FIG. 11, the power supply side terminal device 8 includes a square nut 13 fixed to the upper surface of the terminal seat 15 at one end of the device stand 2 with a fixing screw, a terminal screw 11 screwed into a screw hole 14 of the nut 13, and an L-shaped terminal fitting 10 having a hole 12 in the horizontal piece through which a terminal screw 11 is inserted.
A terminal fitting 10 is held between a terminal screw 11 and a square nut 13. A connecting frame 19 is fixed to the rising piece of the terminal fitting 10. The connecting frame 19 is formed in a rectangular shape with vertical openings, and one longitudinal end is fixed to the terminal fitting 10, and the other end is fixed to the fixed terminal plate 21. The fixed terminal board 21 is T-shaped and has a fixed contact 20 provided on the middle piece.The upper horizontal piece is fixed to the connecting frame 19, and from the tip of the middle piece there is a terminal between the lower parts of both sides of the connecting frame 19. An upper arc traveling plate 22 located at is extended. Both sides of the connecting frame 19 are placed on the partition wall 4 and the inner support stage 23 of the side wall of the device stand 2, and the long connecting frame 19 is suspended from the bottom wall of the device stand 2 due to the terminal seat 15. Located in a stable condition.

負荷側端子装置9は器台2の端子座28にねじ
止め固定される角形ナツト26と、これに設けら
れているねじ孔27に螺合する端子ねじ25及び
端子金具24からなり、負荷側中継端子金具32
の一端垂下片に共に基端が固着されているバイメ
タル33及びこれと対面する加熱用ヒータ板34
のうちのヒータ板34の自由端に編組線35によ
り端子金具24が接続されている。36は編組線
35に被せられた絶縁チユーブ、37はバイメタ
ル33の自由端に設けられた動作調整ねじであ
る。尚、バイメタル33は中間に銅、両面に低高
膨張係数の鉄が張り合わされたものであり、ヒー
タ板34は銅ニツケル合金で形成されたものであ
る。負荷側中継端子金具32の他端には短絡電流
動作素子となるプランジヤ型電磁石装置Xのコイ
ルCの一端が溶接、ろう付けされ、更にコイルC
の他端は電源側中継端子金具31が接続されてい
る。
The load side terminal device 9 consists of a square nut 26 screwed and fixed to the terminal seat 28 of the device base 2, a terminal screw 25 and a terminal fitting 24 that are screwed into a screw hole 27 provided in the square nut 26, and a load side relay. Terminal fitting 32
A bimetal 33 whose base end is fixed to a hanging piece at one end, and a heating heater plate 34 facing the bimetal 33
A terminal fitting 24 is connected to the free end of the heater plate 34 by a braided wire 35. 36 is an insulating tube placed over the braided wire 35, and 37 is an operation adjustment screw provided at the free end of the bimetal 33. The bimetal 33 is made of copper in the middle and iron with a low and high expansion coefficient on both sides, and the heater plate 34 is made of a copper-nickel alloy. One end of a coil C of a plunger type electromagnet device
The other end is connected to a power supply side relay terminal fitting 31.

プランジヤ型電磁石装置Xは上記コイルCを巻
回する非磁性の絶縁シリンダ38と、シリンダ3
8内を移行するプランジヤ39と、シリンダ38
一端に配設されてプランジヤ39を吸引する固定
鉄芯板40と、固定鉄芯板40に挿通されてプラ
ンジヤ39にて駆動される出力棒41と、プラン
ジヤ39の復帰コイルばねとからなるもので、プ
ランジヤ39はシリンダ38内にて径が大きくな
つていてコイルばねの受けと自身の抜け止めとを
行なつている。そしてこれらはシリンダ38一端
の固定鉄芯板40が挿通固着された一方側板44
と、シリンダ38他端の細径部を挿通した他方側
板45と、両側板44及び45の上端間に架設さ
れる天板46とから構成され且つ側板45がL字
型であつてその水平片先端が側板44下端に連結
されることから箱型となつているヨーク43によ
り囲まれているものである。47は側板44に設
けられた固定鉄芯板40の挿入孔、48は側板4
5におけるシリンダ38細径部の挿入孔である。
各側板44及び45並びに天板46はこれらに設
けられている連結用の角孔49とかしめ用突起5
0とにより組み立てられる。また側板45の水平
片と中継端子金具32とは器台2の下面から挿通
された固定用ねじ51が螺合するねじ孔52を
夫々有しており、更に側板45はその両側縁に隔
壁4及び側壁の縦溝54に差し込まれる突出縁5
3を有していることから器台2に位置決め固定さ
れる。尚、電源側中継端子金具31は後述するア
ーク走行板125の一端にねじ止め固定される。
The plunger type electromagnet device X includes a nonmagnetic insulating cylinder 38 around which the coil C is wound, and a cylinder 3.
Plunger 39 moving within 8 and cylinder 38
It consists of a fixed iron core plate 40 disposed at one end to attract the plunger 39, an output rod 41 inserted through the fixed iron core plate 40 and driven by the plunger 39, and a return coil spring for the plunger 39. The plunger 39 has a larger diameter inside the cylinder 38 to receive the coil spring and to prevent itself from coming off. These are one side plate 44 into which the fixed iron core plate 40 at one end of the cylinder 38 is inserted and fixed.
, the other side plate 45 inserted through the narrow diameter portion of the other end of the cylinder 38, and a top plate 46 installed between the upper ends of both side plates 44 and 45, and the side plate 45 is L-shaped and has a horizontal piece. The tip is connected to the lower end of the side plate 44 and is surrounded by a box-shaped yoke 43. 47 is an insertion hole of the fixed iron core plate 40 provided in the side plate 44, and 48 is the side plate 4.
This is the insertion hole of the small diameter portion of the cylinder 38 in No. 5.
Each of the side plates 44 and 45 and the top plate 46 have square holes 49 for connection and protrusions 5 for caulking provided therein.
It is assembled by 0. Further, the horizontal piece of the side plate 45 and the relay terminal fitting 32 each have a screw hole 52 into which a fixing screw 51 inserted from the lower surface of the device stand 2 is screwed, and the side plate 45 has a partition wall 4 on both sides thereof. and a protruding edge 5 inserted into the longitudinal groove 54 of the side wall.
3, it is positioned and fixed on the table 2. The power supply side relay terminal fitting 31 is screwed and fixed to one end of an arc travel plate 125, which will be described later.

前記固定接点20と相対する可動接点56は銅
または銅合金で作られた可動接点板55の下端に
設けられている。この可動接点板55は前記プラ
ンジヤ39突端の強制駆動ピン42が挿通される
逃げ孔57を有しているとともに両側縁に突起5
5aを、上端一面に打出突起55bを有している
ものであり、鉄にて作成されている接点枠58に
取り付けられるものであるとともに、逆U字型で
両端が前記の電源側中継端子金具31に固着され
ている編組線67の中間部が接点枠58をまたい
で接続されるものである。接点枠58は各上端に
円弧状の軸孔66を有している一対の側片59と
この両者を連結する上下一対の背片63及び60
からなるもので、可動接点板55はその両側縁の
突起55aを各側片59下端の下方に開口する溝
59aに係合させるとともに打出突起55bを背
片63中央の孔に挿入してかしめることで両側片
59間に取り付けられるものである。またこの接
点枠58の背片60中央にはヨークの側片45に
当接することとなるストツパ64と、下方に開口
して前記プランジヤ39突端の強制駆動ピン42
にプランジヤ39の吸引移動方向についてのみ係
合する係合溝61とが形成されている。そしてこ
の接点枠58は支持枠68に取り付けられて上記
軸孔66に挿通される枢支軸65により枢支され
るものである。
A movable contact 56 facing the fixed contact 20 is provided at the lower end of a movable contact plate 55 made of copper or copper alloy. The movable contact plate 55 has an escape hole 57 through which the forced drive pin 42 at the tip of the plunger 39 is inserted, and has protrusions 5 on both side edges.
5a has a protrusion 55b on one side of its upper end, and is attached to a contact frame 58 made of iron, and is in an inverted U shape with both ends connected to the power supply side relay terminal metal fittings. The middle portion of the braided wire 67 fixed to the contact frame 58 is connected to the contact frame 58 . The contact frame 58 has a pair of side pieces 59 each having an arcuate shaft hole 66 at its upper end, and a pair of upper and lower spine pieces 63 and 60 that connect the two sides.
The movable contact plate 55 has protrusions 55a on both side edges thereof engaged with grooves 59a opening below the lower ends of each side piece 59, and a protrusion 55b is inserted into the hole at the center of the back piece 63 and swaged. This allows it to be attached between the pieces 59 on both sides. Further, in the center of the back piece 60 of this contact frame 58, there is a stopper 64 that comes into contact with the side piece 45 of the yoke, and a stopper 64 that opens downward and supports the forced drive pin 42 at the tip of the plunger 39.
An engagement groove 61 is formed in which the plunger 39 engages only in the direction of suction movement. The contact frame 58 is attached to a support frame 68 and is pivotally supported by a pivot shaft 65 inserted into the shaft hole 66.

支持枠68は一対の側板69で構成されてい
る。一方の側板69は上記ヨーク43の一部材で
あるところの天板46が一体に形成されたもので
あるとともに他方の側板69との連結用の連結板
70が一体に形成されたものであり、一方の側板
69の天板69及び連結板70の各先端に設けら
れているかしめ用突起50と他方の側板69に設
けられている角孔49とにより両側板69が結合
されている。そして連結板70は単に両側板69
を連結するだけの部材ではなく、可動接点板55
の上端部に一端を当接させる圧縮コイルばね72
の他端を受ける部材ともなつている。尚、圧縮コ
イルばね72の接点圧の付与と、可動接点板55
の復帰との両作用を受け持つものである。
The support frame 68 is composed of a pair of side plates 69. One side plate 69 is integrally formed with the top plate 46, which is a part of the yoke 43, and also has a connecting plate 70 for connection with the other side plate 69, Both side plates 69 are joined by caulking protrusions 50 provided at the ends of the top plate 69 and connecting plate 70 of one side plate 69 and square holes 49 provided in the other side plate 69. The connecting plate 70 is simply a side plate 69.
It is not just a member that connects the movable contact plate 55.
A compression coil spring 72 with one end in contact with the upper end of the
It also serves as a member for receiving the other end. In addition, application of contact pressure to the compression coil spring 72 and movable contact plate 55
It has both the effect of restoring

支持枠68の各側板69には接点枠68のため
の枢支軸65を取り付ける軸孔71のほか、ハン
ドル軸111用の軸孔114、軸84用の軸孔8
6、軸93用の軸孔95、そして窓80が形成さ
れている。ハンドル軸111はハンドル116と
ハンドル金具107とを支持するものであり、軸
84はラツチ金具81を、軸93は引外し金具8
8を支持するものであつて、これらのうち引外し
金具88から説明すると、これは両側片89と、
この両側片89を連結するとともに前記バイメタ
ル33に取り付けられている調整ねじ37先端に
対接する橋絡片90、ラツチ金具81との係合片
91そして一方の側片89下端より下方へ垂下さ
れて前記電磁石装置Xにおける出力棒41の一端
に対接する垂下片92とからなるもので、側片8
9下部に設けられている軸孔94に軸93が挿通
されることで回動自在に支持され、また一端を支
持枠68の孔97に、他端を垂下片92に引つ掛
けた復帰ばね96により一方向に付勢されてい
る。引外し金具88の両側片89に形成されてい
る孔105は、各極の引外し金具88を連動させ
るための連動棒104が挿通されるものであり、
鉄芯にナイロンチユーブを被せて形成されている
連動棒104は、引外し金具88の両側片89間
に配されるテスト用引外し体98の孔106にも
挿通される。また引外し金具88の支持用の軸9
3はこのテスト用引外し体98にも挿通されてお
り、このためにテスト用引外し体98は引外し金
具88と一体的に回動するものとなつている。
尚、テスト用引外し体98はナイロンで形成され
たもので、上蓋3の凹所102に配されているテ
スト用押釦101によつて押し下げられる操作子
100と、引外し金具88の橋絡片90と相対す
る駆動子99とを一体に備えている。103はテ
スト用押釦101の復帰ばねである。
Each side plate 69 of the support frame 68 has a shaft hole 71 for attaching the pivot shaft 65 for the contact frame 68, a shaft hole 114 for the handle shaft 111, and a shaft hole 8 for the shaft 84.
6. A shaft hole 95 for the shaft 93 and a window 80 are formed. The handle shaft 111 supports the handle 116 and the handle fitting 107, the shaft 84 supports the latch fitting 81, and the shaft 93 supports the tripping fitting 8.
Of these, the tripping fitting 88 will be explained first, and this includes two side pieces 89,
A bridging piece 90 connecting the two side pieces 89 and opposing the tip of the adjustment screw 37 attached to the bimetal 33, an engaging piece 91 with the latch fitting 81, and a lower end of one side piece 89 hanging downward. It consists of a hanging piece 92 that is in contact with one end of the output rod 41 in the electromagnet device X, and a side piece 8
A return spring is rotatably supported by inserting a shaft 93 into a shaft hole 94 provided at the lower part of 9, and has one end hooked to a hole 97 of the support frame 68 and the other end hooked to a hanging piece 92. 96 in one direction. Holes 105 formed in both side pieces 89 of the tripping metal fittings 88 are inserted with interlocking rods 104 for interlocking the tripping metal fittings 88 of each pole.
The interlocking rod 104, which is formed by covering an iron core with a nylon tube, is also inserted into the hole 106 of the test tripping body 98 disposed between the side pieces 89 of the tripping fitting 88. Also, the shaft 9 for supporting the tripping fitting 88
3 is also inserted through this test tripping body 98, so that the test tripping body 98 rotates integrally with the tripping fitting 88.
The test tripping body 98 is made of nylon, and is a bridging piece between the operator 100 pressed down by the test push button 101 arranged in the recess 102 of the top lid 3 and the tripping metal fitting 88. 90 and a driving element 99 facing each other are integrally provided. 103 is a return spring for the test push button 101.

軸84により枢支されるラツチ金具81は一対
の側片82とこの両者をつなぐ橋絡片83とから
なり、両側片82の基端が軸84で支持され、上
記引外し金具88の係合片91における受段91
aとは橋絡片83が係合するものである。またこ
のラツチ金具81の各側片82の途中からは中間
軸78が摺動自在に係合する円弧溝87が形成さ
れている片が突出している。中間軸78は各一端
が接点枠58の中央部に軸74で連結されている
2つのリンク73の各他端と、橋絡片で2つの側
片がつながれたH字型をなして一端がハンドル金
具107に軸110で連結されているリンク77
の他端とを連結するものであつて、その両端は支
持枠68における前記窓80内に位置する。
The latch fitting 81, which is pivotally supported by a shaft 84, is composed of a pair of side pieces 82 and a bridging piece 83 that connects the two. Receptacle 91 in piece 91
The bridging piece 83 engages with a. Further, protruding from the middle of each side piece 82 of the latch fitting 81 is a piece in which an arcuate groove 87 into which the intermediate shaft 78 is slidably engaged is formed. The intermediate shaft 78 has one end connected to the center of the contact frame 58 by a shaft 74, and the other ends of the two links 73, and two side pieces connected by a bridging piece, forming an H-shape. Link 77 connected to handle fitting 107 by shaft 110
The other end is connected to the other end, and both ends thereof are located within the window 80 in the support frame 68.

前記ハンドル軸111で支持されるハンドル1
16は、上蓋3のハンドル窓孔121を通じて上
蓋3の上方に突出する操作部を中央に有している
とともに、上記ハンドル金具107が一体的に取
り付けられたものであつて、ハンドル金具107
における橋絡片109が差し込まれる溝117
と、ハンドル金具107の両側片108先端の上
向突子108aが係合する凹部119と、ハンド
ル金具107の側片108から突出する外向突子
108bがあたる突壁120を備え、ハンドル金
具107自体もハンドル軸111で支持されるこ
とから、ハンドル116とともにハンドル金具1
07も回動するものである。そしてこのハンドル
116及びハンドル金具107は一端を軸78
に、他端を接点枠58の支持用の枢支軸65に係
止した反転ばね115により図中反時計まわり方
向に付勢されている。
A handle 1 supported by the handle shaft 111
16 has an operating part in the center that projects upwardly from the upper lid 3 through the handle window hole 121 of the upper lid 3, and the handle fitting 107 is integrally attached to the handle fitting 107.
Groove 117 into which bridging piece 109 is inserted
, a recess 119 in which the upward protrusion 108a at the tip of both side pieces 108 of the handle metal fitting 107 engages, and a projecting wall 120 in which the outward protrusion 108b protruding from the side pieces 108 of the handle metal fitting 107 contacts, and the handle metal fitting 107 itself is also supported by the handle shaft 111, so the handle metal fitting 1 along with the handle 116
07 also rotates. The handle 116 and the handle fitting 107 have one end connected to the shaft 78.
In addition, it is biased counterclockwise in the figure by a reversing spring 115 whose other end is locked to a pivot shaft 65 for supporting the contact frame 58.

さて、消弧装置であるが、これは第12図から
明らかなように、馬蹄形グリツド123を一定間
隔で多数積層したものを一対の絶縁側板124で
支持するとともに排気孔を有している排気板12
8を取り付けることで形成された消弧グリツドブ
ロツク122と、前述した下側アーク走行板12
5、そして上側アーク走行板22とから構成され
ている。アーク走行板125は斜め上方に立ち上
がる一端が電源側中継端子金具31とねじ止め連
結され、両側縁に絶縁側板124下縁の突起との
連結用切欠を有している他端幅広部は最下段のグ
リツド123下面と間隔をおいて相対する。アー
ク走行板22も先端の幅広部の両側板の切欠に絶
縁側板124上縁の突起が連結されることで最上
段のグリツド123上面と間隔をおいて相対す
る。図中130はグリツドブロツク122と連結
枠19の両側片との間及びグリツドブロツク12
2と器台2の隔壁4や側壁との間を遮蔽する絶縁
板であり、131は矩形状連結枠19の内部に上
方から嵌め付けられる絶縁台、133は固定端子
板21と可動接点板55との間に介在して固定端
子板21の上部水平片と中片を被う逆U字型の絶
縁板で器台2の縦溝54に差し込まれることで取
り付けられるものである。尚、絶縁側板124、
排気板128、絶縁板130及び133並びに絶
縁台131は、メラミン樹脂にガラス繊維を混合
した耐熱性を有するもので形成されている。13
4はゼラミツクにて形成されている絶縁板で、固
定端子板21の中片及びアーク走行板22の左右
並びにアーク走行板125の左右に配されるもの
であり、絶縁板130の内面との間にガス還流通
路となる空間を形成する。
Now, as for the arc extinguishing device, as is clear from FIG. 12, this is an exhaust plate that has a large number of horseshoe-shaped grids 123 stacked at regular intervals, supported by a pair of insulating side plates 124, and has an exhaust hole. 12
The arc extinguishing grid block 122 formed by attaching the
5, and an upper arc running plate 22. One end of the arc traveling plate 125 that rises diagonally upward is screwed and connected to the power supply side relay terminal fitting 31, and both sides have notches for connection with the protrusions on the lower edge of the insulating side plate 124.The wide part of the other end is connected to the bottom end. It faces the lower surface of the grid 123 at a distance. The arc traveling plate 22 also faces the upper surface of the uppermost grid 123 at a distance by connecting the protrusions on the upper edge of the insulating side plate 124 to the notches of both side plates in the wide portion at the tip. In the figure, 130 indicates the space between the grid block 122 and both sides of the connecting frame 19 and the grid block 12.
131 is an insulating plate that is fitted into the rectangular connecting frame 19 from above, and 133 is a fixed terminal plate 21 and a movable contact plate 55. This insulating plate is an inverted U-shaped insulating plate that is interposed between the fixed terminal plate 21 and covers the upper horizontal piece and the middle piece of the fixed terminal plate 21, and is installed by being inserted into the vertical groove 54 of the device stand 2. In addition, the insulating side plate 124,
The exhaust plate 128, the insulating plates 130 and 133, and the insulating stand 131 are made of a heat-resistant material that is a mixture of melamine resin and glass fiber. 13
Reference numeral 4 denotes an insulating plate made of ceramic, which is arranged on the middle piece of the fixed terminal plate 21, on the left and right sides of the arc running plate 22, and on the left and right of the arc running plate 125, and between it and the inner surface of the insulating plate 130. A space is formed as a gas reflux passage.

グリツドブロツク122やその他の部材は、器
台2における隔壁4で分割されている各室の端子
座15側の消弧室7に納められる。端子座15と
の間に器台2と一体に形成されている遮蔽壁14
1が位置している消弧室7の底面には、グリツド
ブロツク122の下端に連結されたアーク走行板
125が器台2底面に突出する凸リブ163によ
り位置決めされて配設され、グリツドブロツク1
22上端に連結されたアーク走行板22がつなが
つている連結枠19はその両側片を器台2の隔壁
4乃至側壁に形成されている内側受段23上に載
せるとともに、一端の端子金具10を端子座15
上に固着されている角形ナツト13上に載せて配
設される。この時、連結枠19はグリツドブロツ
ク122側に上下方向の縦溝142を有している
上記遮蔽壁141の外面及び両側面を囲むもので
あり、また連結枠19は前記絶縁台131により
押さえ固定される。ここで絶縁台131は、上端
部に連結枠19の上縁に載るとともに器台2にお
ける隔壁4乃至側壁に設けられた段部161上に
載るフランジ150と、遮蔽壁141のための逃
げ孔152とを有しているとともに、前述のよう
に連結枠19内に嵌合する嵌合部151を有して
いるものであり、嵌合部151の一端面は固定端
子板21における前面に固定接点20が配されて
いる中片の背面に当接し、下面はアーク走行板2
2の上面に当接する。そして絶縁台131自身は
上蓋3の内面から垂下されている突柱132によ
つて下方へと押さえ込まれる。尚、アーク走行板
125の傾斜片の下面には器台2における傾斜突
部165が当接する。またアーク走行板22は、
連結枠19の内側面との間に位置する絶縁板13
0や絶縁台131及び連結枠19などよりも上方
に立ち上がる遮蔽壁141によつて、連結枠19
や端子金具10との間の同極間短絡が完全に防が
れている。図中150は端子ねじ11と連結枠1
9との間に配される絶縁板で、器台2に形成され
ている縦溝で両側縁が、器台2に被せられる上蓋
3で上縁が保持されるものである。
The grid block 122 and other members are housed in the arc extinguishing chamber 7 on the terminal seat 15 side of each chamber divided by the partition wall 4 in the device stand 2. A shielding wall 14 integrally formed with the device stand 2 between the terminal seat 15 and the terminal seat 15
An arc travel plate 125 connected to the lower end of the grid block 122 is positioned on the bottom surface of the arc extinguishing chamber 7 where the grid block 1 is located, and is positioned by a convex rib 163 protruding from the bottom surface of the table 2.
The connecting frame 19 to which the arc traveling plate 22 connected to the upper end of the connecting frame 22 is placed has both sides placed on the inner support stage 23 formed on the partition wall 4 or the side wall of the device stand 2, and the terminal fitting 10 at one end is Terminal seat 15
It is disposed on a square nut 13 fixed on top. At this time, the connecting frame 19 surrounds the outer surface and both side surfaces of the shielding wall 141, which has vertical grooves 142 on the side of the grid block 122, and the connecting frame 19 is held and fixed by the insulating stand 131. Ru. Here, the insulating stand 131 has a flange 150 at its upper end that rests on the upper edge of the connecting frame 19 and rests on a step 161 provided on the partition wall 4 or the side wall of the instrument stand 2, and an escape hole 152 for the shielding wall 141. It also has a fitting part 151 that fits into the connection frame 19 as described above, and one end surface of the fitting part 151 has a fixed contact on the front surface of the fixed terminal plate 21. 20 is arranged, and the lower surface is the arc traveling plate 2.
It comes into contact with the top surface of 2. The insulating stand 131 itself is pressed down by the protruding pillars 132 hanging down from the inner surface of the upper lid 3. Incidentally, the inclined protrusion 165 of the device stand 2 comes into contact with the lower surface of the inclined piece of the arc traveling plate 125. Further, the arc traveling plate 22 is
Insulating plate 13 located between the inner surface of connecting frame 19
0, the insulating stand 131, the connecting frame 19, and the like, the connecting frame 19 is
A short circuit between the same poles and the terminal fitting 10 is completely prevented. In the figure, 150 is the terminal screw 11 and the connecting frame 1
This is an insulating plate disposed between the holder 9 and the holder 9, whose side edges are held by the longitudinal grooves formed in the holder 2, and whose upper edge is held by the upper lid 3 placed over the holder 2.

しかして第7図及び第13図aはオン状態を示
しており、固定接点20に可動接点56が接触し
ていて、負荷電流は電源側端子装置8から連結枠
19、固定端子板21、固定接点20、可動接点
56、可動接点板55、編組線67、中継端子金
具31、コイルC、中継端子金具32、ヒータ板
34、編組線35を経て負荷側端子装置9へと流
れる。またラツチ金具81と引外し金具88との
係合点と、リンク77により円弧溝87の一端に
押し付けられている中間軸78と、リンク73と
接点枠58とを連結している軸74との3者で構
成されるトツグル並びにハンドル軸111と軸1
10と中間軸78とで構成されるトツグルによ
り、このオン状態が維持される。そして圧縮コイ
ルばね72による付勢で可動接点板55は軸74
を中心とするモーメントを受けるために、接点圧
が与えられている。ハンドル116を図中左方向
に回動させれば、第8図及び第13図bに示すよ
うに、ハンドル金具107が反転してリンク77
を引つ張るために中間軸78がラツチ金具81の
円弧溝87内を移行して上記トツグルがくずれ、
接点枠58は圧縮コイルばね72による付勢で枢
支軸65を中心に回動して可動接点56を固定接
点20から離す。
7 and 13a show the on state, the movable contact 56 is in contact with the fixed contact 20, and the load current is transmitted from the power supply terminal device 8 to the connecting frame 19, the fixed terminal plate 21, and the fixed contact 20. It flows to the load side terminal device 9 via the contact 20, the movable contact 56, the movable contact plate 55, the braided wire 67, the relay terminal fitting 31, the coil C, the relay terminal fitting 32, the heater plate 34, and the braided wire 35. Also, the engagement point between the latch fitting 81 and the tripping fitting 88, the intermediate shaft 78 pressed against one end of the arcuate groove 87 by the link 77, and the shaft 74 connecting the link 73 and the contact frame 58. A toggle consisting of a handle shaft 111 and a shaft 1
This on state is maintained by a toggle comprised of 10 and intermediate shaft 78. Then, the movable contact plate 55 is moved to the shaft 74 by the force applied by the compression coil spring 72.
Contact pressure is applied to receive a moment about . When the handle 116 is rotated to the left in the figure, the handle fitting 107 is reversed and the link 77 is rotated, as shown in FIGS. 8 and 13b.
, the intermediate shaft 78 moves within the arcuate groove 87 of the latch fitting 81 and the toggle collapses.
The contact frame 58 rotates about the pivot shaft 65 under the bias of the compression coil spring 72 to separate the movable contact 56 from the fixed contact 20.

オン状態において短絡電流が流れた時には第9
図及び第13図cに示すように電磁石装置Xにお
けるコイルCに流れる短絡電流の電磁力によりプ
ランジヤ39が吸引駆動される。このプランジヤ
39の動作によりまず出力棒41を介して引外し
金具88の垂下片92が押圧されて引外し金具8
8が回動し、係合片91がラツチ金具81の橋絡
片83から離れるために、ラツチ金具81とリン
ク73及びリンク77並びに接点枠58はバラン
スを崩して接点枠58の保持力をなくす。そして
このような動作に並行してプランジヤ39突端の
強制駆動ピン42が接点枠58を強制的に引つ張
ることから可動接点56は固定接点20から瞬時
に引き離される。またこのトリツプ動作の際に、
圧縮コイルばね72のばね力を受けてラツチ金具
81が落ち込むとともにラツチ金具81の円弧溝
87を中間軸78が動くわけであるが、この中間
軸78の移動経路中に窓80における中間山部8
0aが位置してこれに中間軸78が当たつて停止
するために、ハンドル116は中央位置で止ま
る。トリツプ状態であることの表示がハンドル1
16によりなされるわけである。そしてこのよう
なトリツプ動作は、任意の一極の引外し金具88
が作動すれば他の極の引外し金具88も連動棒1
04により同時に作動することから、他の極も追
随してなされる。
When a short circuit current flows in the on state, the ninth
As shown in the figure and FIG. 13c, the plunger 39 is attracted and driven by the electromagnetic force of the short circuit current flowing through the coil C of the electromagnet device X. By this operation of the plunger 39, the hanging piece 92 of the tripping fitting 88 is first pressed via the output rod 41, and the tripping fitting 88 is pressed.
8 rotates and the engaging piece 91 separates from the bridging piece 83 of the latch fitting 81, the latch fitting 81, the link 73, the link 77, and the contact frame 58 lose their balance and the holding force of the contact frame 58 is lost. . In parallel with this operation, the forced drive pin 42 at the tip of the plunger 39 forcibly pulls the contact frame 58, so that the movable contact 56 is instantly separated from the fixed contact 20. Also, during this tripping operation,
As the latch fitting 81 falls under the spring force of the compression coil spring 72, the intermediate shaft 78 moves in the arcuate groove 87 of the latch fitting 81. During the movement path of the intermediate shaft 78, the intermediate mountain portion 8 of the window 80
0a is located and the intermediate shaft 78 comes into contact with it and stops, so the handle 116 stops at the center position. The indication that the trip is on is on the handle 1.
16. Such a tripping operation can be performed using any one-pole tripping fitting 88.
If the tripping metal 88 of the other pole operates, the interlocking rod 1
04, the other poles follow suit.

過負荷電流が流れた時には、第10図及び第1
3図dに示すようにヒータ板34の発熱で加熱さ
れたバイメタル33が湾曲し、引外し金具88の
橋絡片90を押圧して引外し金具88を回動させ
ることから、引外し金具88とラツチ金具81と
の係合が解除され、上記の場合と同様にトリツプ
動作がなされる。尚、この場合プランジヤ39に
よる強制引外し動作はない。もちろん過負荷電流
でも限界以上ではプランジヤ39も動作する。元
の状態に復帰させるには中央位置で停止している
ハンドル116をいつたん左に倒して中間軸78
を強制的に窓80の中間山部80aを越えさせる
と、前記オフ状態になり、この後ハンドル116
を右側に倒せば前記オン状態に復帰する。
When overload current flows, see Figure 10 and Figure 1.
As shown in FIG. 3D, the bimetal 33 heated by the heat generated by the heater plate 34 curves and presses the bridge piece 90 of the tripping fitting 88 to rotate the tripping fitting 88. The engagement between the latch fitting 81 and the latch fitting 81 is released, and the tripping operation is performed in the same manner as in the above case. In this case, there is no forced tripping operation by the plunger 39. Of course, the plunger 39 also operates when the overload current exceeds the limit. To return to the original state, immediately tilt the handle 116, which is stopped at the center position, to the left, and the intermediate shaft 78
When the handle 116 is forcibly moved over the intermediate mountain portion 80a of the window 80, the above-mentioned OFF state is entered, and after this, the handle 116
If you tilt it to the right, it will return to the on state.

さて、可動接点56が固定接点20から離れる
際に生じるアークであるが、このアークは可動接
点板55を通る電流により接点枠58に生じる磁
束がアークに作用する電磁駆動力を発揮するため
に、可動接点56側においては下側のアーク走行
板125に引き付けられて走り、上側のアーク走
行板22とによりグリツドブロツク122に導か
れて分割される。また一部は絶縁板134と絶縁
板130との間のガス還流通路135を介して還
流して一層弱められ、グリツドブロツク122の
排気側に位置する遮蔽壁141の縦溝142から
上方へと抜ける。上側のアーク走行板22は上方
から絶縁台131によつて押さえ込まれているた
めに、ガス圧力で上方へ浮き上がつて同極間短絡
を招いてしまうようなことはない。また、発弧部
に生じるところの前記電磁駆動力を受けて固定端
子板21が後退して接点圧の変化を招いてしまう
ことも、固定端子板21の背面に当接している絶
縁台131によつて防止されている。
Now, the arc that occurs when the movable contact 56 separates from the fixed contact 20 is generated because the magnetic flux generated in the contact frame 58 due to the current passing through the movable contact plate 55 exerts an electromagnetic driving force acting on the arc. On the movable contact 56 side, it runs attracted to the lower arc traveling plate 125, and is guided to the grid block 122 by the upper arc traveling plate 22 and divided. A portion of the gas is further weakened by being recirculated through the gas return passage 135 between the insulating plates 134 and 130, and passes upward through the vertical groove 142 of the shielding wall 141 located on the exhaust side of the grid block 122. Since the upper arc travel plate 22 is pressed down from above by the insulating stand 131, it will not float upward due to gas pressure and cause a short circuit between the same poles. Furthermore, the fixed terminal board 21 may retreat due to the electromagnetic driving force generated at the arcing portion, causing a change in contact pressure. It is prevented by twisting.

[考案の効果] 以上のように本考案においては消弧室内の密閉
化が絶縁台及び遮蔽壁によりなされるために内部
アーク短絡が防止されるものであり、また絶縁台
によつて連結枠及び固定接点を有している固定端
子板の移動や後退が防がれることからこの点にお
いても同極間短絡が防止されるとともに、電磁駆
動力によるところの固定接点の後退で生じる接点
圧の変動の防止もなされるものである。
[Effects of the invention] As described above, in the present invention, the inside of the arc extinguishing chamber is sealed by the insulating stand and the shielding wall, thereby preventing internal arc short circuits. Since the fixed terminal board containing the fixed contacts is prevented from moving or retracting, short circuits between the same poles are also prevented in this respect, and fluctuations in contact pressure caused by the retraction of the fixed contacts due to electromagnetic driving force are prevented. It is also something that can be prevented.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案一実施例の平面図、第2図は同
上の右側面図、第3図は同上の上蓋の除いた状態
の破断平面図、第4図は同上の縦断面図、第5図
及び第6図は同上の横断面図、第7図は同上のオ
ン状態を示す縦断面図、第8図は同上のオフ状態
を示す縦断面図、第9図及び第10図は同上のト
リツプ状態を示す縦断面図、第11図及び第12
図は同上の分解斜視図、第13図は同上の動作機
構図であつて、1は筐体、10は端子金具、19
は連結枠、20は固定接点、21は固定端子板、
22はアーク走行板、122はグリツドブロツ
ク、123はグリツド、141は遮蔽壁を示す。
Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a right side view of the same, Fig. 3 is a cutaway plan view of the same with the top cover removed, Fig. 4 is a longitudinal sectional view of the same, and Fig. 4 is a longitudinal sectional view of the same. Figures 5 and 6 are cross-sectional views of the same as above, Figure 7 is a vertical cross-sectional view of the same as shown in the on state, Figure 8 is a longitudinal cross-sectional view of the same as shown in the off state, and Figures 9 and 10 are the same as above. 11 and 12 are vertical sectional views showing the trip state of
The figure is an exploded perspective view of the same as above, and FIG.
is a connection frame, 20 is a fixed contact, 21 is a fixed terminal board,
22 is an arc traveling plate, 122 is a grid block, 123 is a grid, and 141 is a shielding wall.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 筐体内の消弧室内に発弧部より延出された一対
のアーク走行板を配設するとともに両アーク走行
板間に消弧グリツドを配設し、消弧グリツドの排
気側に筐体の底部より立設された筐体と一体の遮
蔽壁を位置させてこの遮蔽壁に形成されている排
気通路としての縦溝を消弧グリツドの排気側に配
し、発弧部に位置する固定接点と接続用端子板と
をつなぐ連結枠を遮蔽壁の周囲に配設し、筐体の
消弧室の縁部及び遮蔽壁に接するとともに固定接
点背面と一方のアーク走行板背面に当接する絶縁
台を設けて絶縁台で連結枠を押さえ固定して成る
配線用遮断器の消弧装置。
A pair of arc running plates extending from the arcing part are disposed inside the arc extinguishing chamber in the housing, and an arc extinguishing grid is arranged between both arc running plates, and the bottom of the housing is placed on the exhaust side of the arc extinguishing grid. A shielding wall that is integral with the casing that stands upright is positioned, and a vertical groove serving as an exhaust passage formed in this shielding wall is arranged on the exhaust side of the arc extinguishing grid, and a fixed contact located at the arcing part and A connecting frame connecting the connection terminal board is arranged around the shielding wall, and an insulating stand is placed in contact with the edge of the arc extinguishing chamber of the casing and the shielding wall, as well as the back of the fixed contact and the back of one of the arc traveling plates. An arc extinguishing device for a molded circuit breaker, which is constructed by holding and fixing a connecting frame with an insulating stand.
JP20204483U 1983-12-23 1983-12-23 Arc extinguishing device for hardwire circuit breakers Granted JPS60107556U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20204483U JPS60107556U (en) 1983-12-23 1983-12-23 Arc extinguishing device for hardwire circuit breakers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20204483U JPS60107556U (en) 1983-12-23 1983-12-23 Arc extinguishing device for hardwire circuit breakers

Publications (2)

Publication Number Publication Date
JPS60107556U JPS60107556U (en) 1985-07-22
JPH0142926Y2 true JPH0142926Y2 (en) 1989-12-14

Family

ID=30764397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20204483U Granted JPS60107556U (en) 1983-12-23 1983-12-23 Arc extinguishing device for hardwire circuit breakers

Country Status (1)

Country Link
JP (1) JPS60107556U (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5075015B2 (en) * 2008-05-28 2012-11-14 三菱電機株式会社 Circuit breaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56162444A (en) * 1980-12-27 1981-12-14 Matsushita Electric Works Ltd Circuit breaker

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56162444A (en) * 1980-12-27 1981-12-14 Matsushita Electric Works Ltd Circuit breaker

Also Published As

Publication number Publication date
JPS60107556U (en) 1985-07-22

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