JP6009340B2 - Circuit breaker and electromagnetic trip device - Google Patents
Circuit breaker and electromagnetic trip device Download PDFInfo
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- JP6009340B2 JP6009340B2 JP2012270922A JP2012270922A JP6009340B2 JP 6009340 B2 JP6009340 B2 JP 6009340B2 JP 2012270922 A JP2012270922 A JP 2012270922A JP 2012270922 A JP2012270922 A JP 2012270922A JP 6009340 B2 JP6009340 B2 JP 6009340B2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 383
- 230000007246 mechanism Effects 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 description 28
- 230000002093 peripheral effect Effects 0.000 description 14
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- 238000010891 electric arc Methods 0.000 description 1
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Description
この発明は、電源側端子と負荷側端子との間に可動接触子及び固定接触子と直列に接続された電磁コイルとこの電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置を有し、前記可動鉄心が前記固定鉄心に吸引されると開閉機構部によって前記可動接触子が前記固定接触子から開離されることにより遮断動作する回路遮断器、及びその電磁引き外し装置に関するものである。 According to the present invention, an electromagnetic coil connected in series with a movable contact and a stationary contact between a power supply side terminal and a load side terminal, and a fixed iron core and a movable iron core disposed in the magnetic path of the electromagnetic coil are provided. An electromagnetic trip device in which the movable iron core is attracted to the fixed iron core by electromagnetic attraction when a current of a predetermined magnitude flows in the electromagnetic coil, and the movable iron core is attracted to the fixed iron core The present invention relates to a circuit breaker that operates to be cut off when the movable contact is separated from the fixed contact by an opening / closing mechanism, and an electromagnetic trip device thereof.
回路遮断器は、スイッチ機能としての回路遮断器に具備されたハンドルの操作による電路の開閉だけではなく、過電流が流れた際に電線や負荷機器の焼損を未然に防止するために電路を遮断するという大きな役目を担っている。 The circuit breaker not only opens and closes the electric circuit by operating the handle provided in the circuit breaker as a switch function, but also interrupts the electric circuit to prevent burnout of the wires and load equipment when an overcurrent flows. It has a big role to do.
瞬時引き外し特性を担う電磁引き外し装置は、電磁コイルと、この電磁コイルの内部に設けられた固定鉄心と、同じく電磁コイルの内部に設けられ、ばねにより固定鉄心から引き離す方向に付勢された可動鉄心とを備え、短絡電流などの大電流で電磁コイルが励磁されることによって、可動鉄心をばねの付勢力に抗して固定鉄心に吸引させるものである。そして、この可動鉄心の移動により、開閉機構部を作動させ、電路の遮断を行うものである。 The electromagnetic trip device responsible for instantaneous trip characteristics is an electromagnetic coil, a fixed iron core provided inside the electromagnetic coil, and also provided inside the electromagnetic coil, and biased in a direction away from the fixed iron core by a spring. The movable iron core is provided, and when the electromagnetic coil is excited by a large current such as a short circuit current, the movable iron core is attracted to the fixed iron core against the biasing force of the spring. And by this movement of a movable iron core, an opening-and-closing mechanism part is operated and an electric circuit is interrupted | blocked.
瞬時引き外し特性の目安となる瞬時引き外し電流の値（以下「瞬時引き外し電流値」と記す）は、他の機器、例えば、回路遮断器の上位に位置するヒューズの短時間許容特性や、下位に位置する電動機の始動電流特性との強調を得るために、細かく設定される必要がある。 The value of the instantaneous trip current (hereinafter referred to as “instant trip current value”), which is a measure of the instantaneous trip characteristics, is the short-time permissible characteristics of fuses located above other devices, for example, circuit breakers, In order to obtain an emphasis on the starting current characteristics of the motor located at the lower level, it is necessary to set the details finely.
例えば、IEC（International Electrotechnical Commission、国際規格）６０８９８では、瞬時引き外し電流値は、定格電流の３倍を超え５倍以下（B特性）、５倍を超え１０倍以下（C特性）、および１０倍を超え２０倍以下（D特性）にそれぞれ設定されている。 For example, in IEC (International Electrotechnical Commission) 60898, the instantaneous tripping current value is more than 3 times the rated current and less than 5 times (B characteristic), more than 5 times and less than 10 times (C characteristic), and 10 It is set to more than 20 times and less than 20 times (D characteristics).
従来の回路遮断器の電磁引き外し装置では、ばねを組み込んだ時点で、可動鉄心と固定鉄心の間隔、すなわち可動鉄心の移動代、およびこの移動に必要な力（吸引力）が決定される。 In the conventional electromagnetic tripping device for a circuit breaker, when the spring is incorporated, the distance between the movable iron core and the fixed iron core, that is, the movement allowance of the movable iron core, and the force (attraction force) required for this movement are determined.
上記のような規格の要求に応じて、瞬時引き外し電流値の種類を増やそうとすると、ばねの荷重が様々なものを用意する必要があり、また、コイルの巻き数が様々なものを用意する必要があり、ばね、電磁コイル等の部品の種類が増えるため、これら部品の管理も繁雑になるという問題があり、また、部品の標準化および低コスト化の観点においても標準化および低コスト化をしにくいという問題があった。 In order to increase the types of instantaneous tripping current values according to the requirements of the above standards, it is necessary to prepare various spring loads and various coil turns. As the number of parts such as springs and electromagnetic coils increases, management of these parts becomes complicated, and standardization and cost reduction are also required from the viewpoint of standardization and cost reduction of parts. There was a problem that it was difficult.
そこで、従来の回路遮断器では可動鉄心と固定鉄心の間の距離や可動鉄心と固定鉄心間のばねの付勢力を制御する制御手段を備えたものが開示されている（例えば、特許文献１参照。）。 Therefore, a conventional circuit breaker has been disclosed which includes a control means for controlling the distance between the movable iron core and the fixed iron core and the biasing force of the spring between the movable iron core and the fixed iron core (see, for example, Patent Document 1). .)
しかしながら、上記のような制御手段においては可動鉄心が、回路遮断器の開閉機構部を引き外し動作させるための引き外しストロークを変化させることになり、開閉機構部が作動した時の可動代や引き外し余裕等が変化してしまうため、出荷検査や、製品ばらつきの管理が容易ではなかった。また、引き外し装置組立完了後においては吸引力調整が不可能だったため、あくまで標準化および製造工程の簡略化といった効果にとどまっていた。 However, in the control means as described above, the movable iron core changes the tripping stroke for tripping the opening / closing mechanism of the circuit breaker. Since the removal margin and the like change, it is not easy to perform shipping inspection and product variation management. In addition, since the suction force cannot be adjusted after the assembly of the trip device, the effects of standardization and simplification of the manufacturing process are limited.
本発明は、上記のような課題を解決するためになされたもので、ばねや電磁コイルの種類を抑えつつ、且つ可動鉄心の引き外しストロークを変えることなく、瞬時引き外し電流値の変更ができるようにすることを目的とするものである。 The present invention has been made to solve the above-described problems, and can instantaneously change the tripping current value without changing the tripping stroke of the movable iron core while suppressing the types of springs and electromagnetic coils. The purpose is to do so.
この発明に係る回路遮断器は、電源側端子と負荷側端子との間に可動接触子及び固定接触子と直列に接続された電磁コイルとこの電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置を有し、前記可動鉄心が前記固定鉄心に吸引されると開閉機構部によって前記可動接触子が前記固定接触子から開離されることにより遮断動作する回路遮断器において、前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心を有し、前記固定鉄心は、前記吸引時に前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面と当接しない磁気対向面を備え、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されることにより複数種類の引き外し特性に設定されるものである。
また、この発明に係る電磁引き外し装置は、回路遮断器の電源側端子と前記回路遮断器の負荷側端子との間に前記回路遮断器の可動接触子及び前記回路遮断器の固定接触子と直列に接続される電磁コイルと、この電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え、前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置であって、前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心が設けられ、前記固定鉄心は、前記吸引時に前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面と当接しない磁気対向面を備え、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されるものである。
A circuit breaker according to the present invention includes an electromagnetic coil connected in series with a movable contact and a fixed contact between a power supply side terminal and a load side terminal, and a fixed iron core disposed in a magnetic path of the electromagnetic coil. And a movable iron core, and an electromagnetic trip device in which the movable iron core is attracted to the fixed iron core by electromagnetic attraction when a current of a predetermined magnitude flows through the electromagnetic coil, and the movable iron core is the fixed iron core. In a circuit breaker that operates when the movable contact is separated from the fixed contact by the opening / closing mechanism, the circuit breaker can move in the suction direction between the movable core and the fixed core. An electromagnetic attraction force setting auxiliary iron core , and the fixed iron core has a magnetic facing surface that does not come into contact with the magnetic facing surface that controls the attraction of the electromagnetic attraction force setting auxiliary iron core during the attraction. Force setting And is set to a plurality of types of tripping characteristics by the direction of the position of the suction auxiliary core is adjusted by the position adjusting mechanism.
The electromagnetic trip device according to the present invention includes a movable contact of the circuit breaker and a fixed contact of the circuit breaker between a power supply side terminal of the circuit breaker and a load side terminal of the circuit breaker. An electromagnetic coil connected in series, and a fixed iron core and a movable iron core disposed in the magnetic path of the electromagnetic coil, and when a current of a predetermined magnitude flows through the electromagnetic coil, the movable iron core becomes the fixed iron core An electromagnetic tripping device that is attracted by an electromagnetic attraction force is provided with an electromagnetic attraction force setting auxiliary iron core that can move in the direction of attraction between the movable iron core and the fixed iron core, and the fixed iron core Includes a magnetic facing surface that does not contact the magnetic facing surface that controls the attraction of the electromagnetic attraction force setting auxiliary iron core during the attraction, and the position of the attraction direction of the electromagnetic attraction force setting auxiliary iron core is a position adjustment mechanism Adjusted by Than is.
この発明による回路遮断器は、電源側端子と負荷側端子との間に可動接触子及び固定接触子と直列に接続された電磁コイルとこの電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置を有し、前記可動鉄心が前記固定鉄心に吸引されると開閉機構部によって前記可動接触子が前記固定接触子から開離されることにより遮断動作する回路遮断器において、前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心を有し、前記固定鉄心は、前記吸引時に前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面と当接しない磁気対向面を備え、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されることにより複数種類の引き外し特性に設定され、また、この発明による電磁引き外し装置は、回路遮断器の電源側端子と前記回路遮断器の負荷側端子との間に前記回路遮断器の可動接触子及び前記回路遮断器の固定接触子と直列に接続される電磁コイルと、この電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え、前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置であって、前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心が設けられ、前記固定鉄心は、前記吸引時に前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面と当接しない磁気対向面を備え、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されるので、ばねや電磁コイルの種類を抑えつつ、且つ可動鉄心の引き外しストロークを変えることなく、瞬時引き外し電流値の変更ができる効果がある。 A circuit breaker according to the present invention includes an electromagnetic coil connected in series with a movable contact and a fixed contact between a power supply side terminal and a load side terminal, a fixed iron core disposed in a magnetic path of the electromagnetic coil, and A movable iron core, and an electromagnetic trip device in which the movable iron core is attracted to the stationary iron core by electromagnetic attraction when a current of a predetermined magnitude flows through the electromagnetic coil, and the movable iron core is attached to the stationary iron core In a circuit breaker that operates to be cut off when the movable contact is separated from the fixed contact by an opening / closing mechanism when sucked, the circuit breaker is movable between the movable core and the fixed core in the suction direction. An electromagnetic attraction force setting auxiliary iron core , and the fixed iron core includes a magnetic facing surface that does not contact the magnetic facing surface that controls the attraction of the electromagnetic attraction force setting auxiliary iron core during the attraction, and the electromagnetic attraction force Configuration The position of the suction core in the suction direction is adjusted by a position adjustment mechanism to set a plurality of types of tripping characteristics, and the electromagnetic tripping device according to the present invention includes a power supply side terminal of a circuit breaker and the circuit An electromagnetic coil connected in series with the movable contact of the circuit breaker and the fixed contact of the circuit breaker between the load side terminal of the breaker and a fixed disposed in the magnetic path of the electromagnetic coil An electromagnetic trip device comprising an iron core and a movable iron core, wherein the movable iron core is attracted to the fixed iron core by electromagnetic attraction when a current of a predetermined magnitude flows through the electromagnetic coil, wherein the movable iron core and the movable iron core An electromagnetic attraction force setting auxiliary iron core movable in the direction of attraction is provided between the fixed iron core, and the fixed iron core has a magnetic facing surface that controls the attraction of the electromagnetic attraction force setting auxiliary iron core during the attraction. Contact Comprises a no magnetic facing surface, since the position of the suction of the electromagnetic attractive force setting auxiliary core is adjusted by the position adjusting mechanism, while suppressing the spring and the type of the electromagnetic coil, and a tripping stroke of the movable iron core There is an effect that the instantaneous tripping current value can be changed without changing.
実施の形態１．
以下、この発明の実施の形態１を図１〜図７に基づいて説明する。図１は回路遮断器の一例の全体構造を縦断側面図で示す図、図２は回路遮断器の引き外し装置の一例を斜視図で示す図、図３は回路遮断器の引き外し装置の一例を縦断側面図で示す図、図４は回路遮断器の引き外し装置の一例を平面図で示す図、図５は回路遮断器の引き外し装置の一例を横断平面図で示す図、図６は回路遮断器の引き外し装置の吸引状態一例を縦断側面図で示す図、図７は回路遮断器の引き外し装置の電磁的吸引力設定補助鉄心の位置が吸引の方向の他の位置に移動した状態に調整された状態の一例を縦断側面図で示す図である。
Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional side view of an example of the overall structure of a circuit breaker, FIG. 2 is a perspective view of an example of a circuit breaker tripping device, and FIG. 3 is an example of a circuit breaker tripping device. FIG. 4 is a plan view showing an example of a circuit breaker tripping device, FIG. 5 is a cross-sectional view showing an example of a circuit breaker tripping device, and FIG. FIG. 7 is a longitudinal sectional side view showing an example of the suction state of the circuit breaker tripping device, and FIG. 7 shows that the position of the magnetic suction force setting auxiliary iron core of the circuit breaker tripping device has moved to another position in the suction direction. It is a figure which shows an example of the state adjusted to the state by a vertical side view.
図１〜図５において、回路遮断器１１１は、ベース１、カバー２、電源側端子３ａ、負荷側端子３ｂ、可動子ホルダ４、取付けねじ（電磁引き外し装置取付けねじ）５、トリップバー６、可動子７、可動接触子８ａ、固定接触子８ｂ、消弧室９、開閉ハンドル１０、開閉機構部１１、及び電磁引き外し装置２１を備えている。 1 to 5, the circuit breaker 111 includes a base 1, a cover 2, a power supply side terminal 3a, a load side terminal 3b, a mover holder 4, a mounting screw (electromagnetic tripping device mounting screw) 5, a trip bar 6, A movable element 7, a movable contact 8 a, a fixed contact 8 b, an arc extinguishing chamber 9, an opening / closing handle 10, an opening / closing mechanism 11, and an electromagnetic trip device 21 are provided.
ベース１及びカバー２は、何れも合成樹脂材料で形成され、回路遮断器１１１の外筐を構成している。
取付けねじ（電磁引き外し装置取付けねじ）５は、可動子ホルダ４を貫通して電磁引き外し装置２１の固定鉄心３３に螺着されることにより、電磁引き外し装置２１と可動子ホルダ４とを機械的及び電気的に接続するもので、この接続により、電磁引き外し装置２１は可動子ホルダ４を介してベース１に取り付けられる。
The base 1 and the cover 2 are both made of a synthetic resin material and constitute an outer casing of the circuit breaker 111.
A mounting screw (electromagnetic tripping device mounting screw) 5 passes through the mover holder 4 and is screwed to the fixed iron core 33 of the electromagnetic tripping device 21, thereby connecting the electromagnetic tripping device 21 and the mover holder 4 to each other. The electromagnetic trip device 21 is attached to the base 1 via the mover holder 4 by mechanical and electrical connection.
開閉機構部１１は、トリップバー６を備えており、短絡電流や過電流等の過大電流が回路に流れた際の電磁引き外し装置２１の吸引動作によってトリップバー６が電磁引き外し装置２１の動作片３８で駆動されると、可動子７の先端部の可動接触子８ａが固定接触子８ｂから開離する方向に可動子７を介して駆動され、図１に図示のように可動接触子８ａが固定接触子８ｂから完全に開離した状態になる。可動接触子８ａが固定接触子８ｂから開離する際に可動接触子８ａと固定接触子８ｂとの間に発生する電弧は消弧室９で消弧される。
なお、開閉ハンドル１０の人為的操作によっても、開閉機構部１１を介して可動接触子８ａは固定接触子８ｂから開離する。
The opening / closing mechanism unit 11 includes a trip bar 6, and the trip bar 6 operates by the attraction operation of the electromagnetic trip device 21 when an excessive current such as a short circuit current or an overcurrent flows in the circuit. When driven by the piece 38, the movable contact 8a at the front end of the mover 7 is driven through the mover 7 in the direction away from the fixed contact 8b, and the movable contact 8a as shown in FIG. Is completely separated from the stationary contact 8b. The electric arc generated between the movable contact 8a and the fixed contact 8b when the movable contact 8a is separated from the fixed contact 8b is extinguished in the arc extinguishing chamber 9.
Note that the movable contact 8a is separated from the fixed contact 8b through the opening / closing mechanism 11 also by an artificial operation of the opening / closing handle 10.
以下、電磁引き外し装置２１の詳細な構造及び各部の機能を説明する。
電磁引き外し装置２１は、電磁コイル３１、円筒状電磁コイルボビン３２、電磁コイルボビン内周突起部３２ａ、電磁コイルボビン上端上底部３２ｂ、電磁コイルボビン上端上底部の可動鉄心第一首部案内孔３２ｂａ、固定鉄心３３、固定鉄心上面部磁気対向面３３ａ、固定鉄心上部円柱状押しばね支持部３３ｂ、固定鉄心上端押しばね受け有底穴３３ｂａ、継鉄３４、継鉄垂直部３４ａ、継鉄係合部３４ｂａ，３４ｂｂ、可動鉄心３５、可動鉄心頭部３５ａ、可動鉄心頭部上面溝部３５ａａ、可動鉄心第一首部３５ｂ、可動鉄心第二首部３５ｃ、可動鉄心電磁コイルボビン内鍔状摺動部３５ｄ、可動鉄心下端雄ねじ部３５ｅ、可動鉄心下端押しばね受け有底穴３５ｆ、可動鉄心下面部磁気対向面３５ｇ、円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６、円筒状補助可動鉄心内周雌ねじ部３６ａ、円筒状補助可動鉄心外周凹み部３６ｂ、円筒状補助可動鉄心下面部磁気対向面３６ｃ、コイル状押しばね３７、動作片３８、動作片被駆動部３８ａ、動作片被駆動部可動鉄心頭部係合部３８ａａ、動作片被駆動部可動鉄心頭部対応開放部３８ａｂ、及び動作片被駆動部可動鉄心第二首部貫通孔３８ａｃを有している。
Hereinafter, the detailed structure of the electromagnetic trip device 21 and the function of each part will be described.
The electromagnetic trip device 21 includes an electromagnetic coil 31, a cylindrical electromagnetic coil bobbin 32, an electromagnetic coil bobbin inner peripheral projection 32a, an electromagnetic coil bobbin upper end upper bottom portion 32b, an electromagnetic coil bobbin upper end upper bottom movable arm core first neck guide hole 32ba, and a fixed iron core 33. , Fixed core top surface magnetic facing surface 33a, fixed core upper cylindrical push spring support portion 33b, fixed core top push spring receiving bottomed hole 33ba, yoke 34, yoke vertical portion 34a, yoke engaging portions 34ba, 34bb The movable iron core 35, the movable iron core head 35a, the movable iron core top surface groove 35aa, the movable iron core first neck 35b, the movable iron core second neck 35c, the movable iron core electromagnetic coil bobbin inner flange-like sliding part 35d, and the movable iron core lower end male screw part 35e, movable core lower end push spring receiving bottom hole 35f, movable core lower surface magnetic facing surface 35g, cylindrical auxiliary movable iron core (electromagnetic attractive force Constant auxiliary iron core) 36, cylindrical auxiliary movable iron core inner peripheral female threaded portion 36a, cylindrical auxiliary movable iron core outer peripheral recessed portion 36b, cylindrical auxiliary movable iron core lower surface magnetic facing surface 36c, coiled push spring 37, operating piece 38, operation Single-side driven portion 38a, moving piece driven portion movable core head engaging portion 38aa, moving piece driven portion movable core head corresponding open portion 38ab, and moving piece driven portion movable iron core second neck through-hole 38ac are provided. doing.
電磁コイル３１は、円筒状電磁コイルボビン３２の外周に巻回され、その電源側の端部は、電磁コイル電源側端子間可撓接続導体３１３を介して電源側端子３ａに電気的に接続され、負荷側の端部は、投入状態の可動接触子８ａ及び固定接触子８ｂを介して負荷側端子３ｂに電気的に接続される。
従って、電磁コイル３１は、可動接触子８ａと固定接触子８ｂとが投入状態の場合には、回路電流つまり負荷電流が流れ、可動接触子８ａと固定接触子８ｂとが開離状態（過大電流に基づく回路遮断器トリップ状態及び人為的開離の状態）の場合には回路電流は流れない。
The electromagnetic coil 31 is wound around the outer periphery of the cylindrical electromagnetic coil bobbin 32, and the power source side end is electrically connected to the power source side terminal 3a via the electromagnetic coil power source side terminal flexible connection conductor 313. The end on the load side is electrically connected to the load side terminal 3b via the movable contact 8a and the fixed contact 8b in the input state.
Therefore, in the electromagnetic coil 31, when the movable contact 8a and the fixed contact 8b are turned on, a circuit current, that is, a load current flows, and the movable contact 8a and the fixed contact 8b are separated (overcurrent). In the case of a circuit breaker trip state and an artificially separated state based on the above, no circuit current flows.
円筒状電磁コイルボビン３２の内周には、電磁コイルボビン内周突起部３２ａが、円筒状電磁コイルボビン３２と一体に形成されている。電磁コイルボビン内周突起部３２ａは少なくとも円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６の移動範囲に亘って延在するように形成されている。
電磁コイルボビン上端上底部３２ｂの中心部には、可動鉄心第一首部案内孔３２ｂａが形成されている。
On the inner periphery of the cylindrical electromagnetic coil bobbin 32, an electromagnetic coil bobbin inner peripheral protrusion 32 a is formed integrally with the cylindrical electromagnetic coil bobbin 32. The electromagnetic coil bobbin inner circumferential protrusion 32 a is formed so as to extend at least over the moving range of the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36.
A movable iron core first neck guide hole 32ba is formed at the center of the upper bottom portion 32b at the upper end of the electromagnetic coil bobbin.
円柱状の固定鉄心３３には、固定鉄心上面部磁気対向面３３ａが固定鉄心上部円柱状押しばね支持部３３ｂの周りに形成されている。
固定鉄心上部円柱状押しばね支持部３３ｂは、固定鉄心３３の中心部の上端側（可動鉄心３５側）に固定鉄心３３と一体に突設され、電磁コイル３１、円筒状電磁コイルボビン３２、及び可動鉄心３５と同心状をなしている。
また、固定鉄心上部円柱状押しばね支持部３３ｂの上端側（可動鉄心３５側）には、固定鉄心上端押しばね受け有底穴３３ｂａが、固定鉄心上部円柱状押しばね支持部３３ｂ、電磁コイル３１、円筒状電磁コイルボビン３２、及び可動鉄心３５と同心状をなして、穿設されている。
The cylindrical fixed iron core 33 has a fixed iron core upper surface portion magnetic facing surface 33a formed around the fixed iron core upper cylindrical push spring support portion 33b.
The fixed iron core upper cylindrical push spring support portion 33b protrudes integrally with the fixed iron core 33 on the upper end side (movable iron core 35 side) of the center portion of the fixed iron core 33, and includes an electromagnetic coil 31, a cylindrical electromagnetic coil bobbin 32, and a movable iron core. Concentric with the iron core 35.
A fixed core upper end push spring receiving bottomed hole 33ba is provided on the upper end side (movable iron core 35 side) of the fixed core upper cylindrical push spring support portion 33b. The cylindrical electromagnetic coil bobbin 32 and the movable iron core 35 are formed concentrically.
継鉄３４は、相互に一体形成された継鉄垂直部３４ａ及び継鉄係合部３４ｂａ，３４ｂｂを有している。
継鉄垂直部３４ａの下端部（固定鉄心３３との対向部）の継鉄係合部３４ｂａは、固定鉄心３３と係合し、固定鉄心３３と磁気的に結合されている。
継鉄垂直部３４ａの上端部（可動鉄心３３の可動鉄心第一首部３５ｂとの対向部）の継鉄係合部３４ｂｂは、電磁コイルボビン上端上底部３２ｂと係合している。
The yoke 34 has a yoke vertical portion 34a and yoke engaging portions 34ba and 34bb which are integrally formed with each other.
The yoke engaging portion 34ba at the lower end portion of the yoke vertical portion 34a (the portion facing the fixed iron core 33) engages with the fixed iron core 33 and is magnetically coupled to the fixed iron core 33.
The yoke engaging portion 34bb of the upper end portion of the yoke vertical portion 34a (the portion facing the movable iron core first neck portion 35b of the movable iron core 33) is engaged with the upper upper bottom portion 32b of the electromagnetic coil bobbin.
可動鉄心３５は、可動鉄心頭部３５ａ、可動鉄心頭部上面溝部３５ａａ、可動鉄心第一首部３５ｂ、可動鉄心第二首部３５ｃ、可動鉄心電磁コイルボビン内鍔状摺動部３５ｄ、可動鉄心下端雄ねじ部３５ｅ、可動鉄心下端押しばね受け有底穴３５ｆ、及び可動鉄心下面部磁気対向面３５ｇを一体に有し、その全体の形状が略コマ（独楽）状を成しており、電磁コイル３１の中心を中心として可回動である。
可動鉄心頭部３５ａ、可動鉄心頭部上面溝部３５ａａ、可動鉄心第一首部３５ｂ、可動鉄心第二首部３５ｃ、可動鉄心電磁コイルボビン内鍔状摺動部３５ｄ、可動鉄心下端雄ねじ部３５ｅ、及び可動鉄心下端押しばね受け有底穴３５ｆは、固定鉄心３３、電磁コイル３１、及び円筒状電磁コイルボビン３２と同心状をなしている。
The movable iron core 35 has a movable iron core head 35a, a movable iron core head upper surface groove 35aa, a movable iron core first neck 35b, a movable iron core second neck 35c, a movable iron core electromagnetic coil bobbin inner flange-like sliding part 35d, and a movable iron core lower end male screw part. 35e, the bottom end of the movable core pressing spring receiving hole 35f, and the bottom surface portion magnetic facing surface 35g of the movable core are integrally formed, and the overall shape thereof is substantially a top (top), and the center of the electromagnetic coil 31 It is pivotable around the center.
Movable iron core head 35a, movable iron core head upper surface groove 35aa, movable iron core first neck 35b, movable iron core second neck 35c, movable iron magnet coil bobbin inner flange-like sliding part 35d, movable iron core lower end male screw part 35e, and movable iron core The bottom push spring receiving bottomed hole 35f is concentric with the fixed iron core 33, the electromagnetic coil 31, and the cylindrical electromagnetic coil bobbin 32.
可動鉄心電磁コイルボビン内鍔状摺動部３５ｄは、電磁コイルボビンの内周に、上下方向（固定鉄心３３による円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６の吸引の方向）に可摺動に嵌合している。
可動鉄心電磁コイルボビン内鍔状摺動部３５ｄの上側（反固定鉄心３３側）に、可動鉄心第一首部３５ｂが、可動鉄心電磁コイルボビン内鍔状摺動部３５ｄと一体に形成され、この可動鉄心第一首部３５ｂは、電磁コイルボビン上端上底部３２ｂの可動鉄心第一首部案内孔３２ｂａ内を、前記吸引の方向に移動可能に、貫通している。
The inner core-shaped sliding portion 35d of the movable core electromagnetic coil bobbin is slidable in the vertical direction (the direction of suction of the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core 36) by the fixed iron core 33) on the inner periphery of the electromagnetic coil bobbin. It is fitted to the movement.
A movable iron core first neck portion 35b is formed integrally with the flange-shaped sliding portion 35d in the movable core electromagnetic coil bobbin on the upper side (on the anti-fixed iron core 33 side) of the flange-shaped sliding portion 35d in the movable core electromagnetic coil bobbin. The first neck portion 35b penetrates the movable iron core first neck portion guide hole 32ba of the electromagnetic coil bobbin upper end upper bottom portion 32b so as to be movable in the suction direction.
可動鉄心第一首部３５ｂの上側（反固定鉄心３３側）に、可動鉄心第二首部３５ｃが、可動鉄心第一首部３５ｂと一体に形成され、この可動鉄心第二首部３５ｃは、動作片３８の動作片被駆動部可動鉄心第二首部貫通孔３８ａｃ内を、移動可能に貫通している。 A movable iron core second neck portion 35c is formed integrally with the movable iron core first neck portion 35b on the upper side (the anti-fixed iron core 33 side) of the movable iron core first neck portion 35b. The movable piece driven part movable iron core second neck part through-hole 38ac is movably penetrated.
可動鉄心第二首部３５ｃの上側（反固定鉄心３３側）に、可動鉄心頭部３５ａが、可動鉄心第二首部３５ｃと一体に形成され、その上側（反固定鉄心３３側）の面に、可動鉄心頭部上面溝部３５ａａが形成されている。 A movable iron core head 35a is formed integrally with the movable iron core second neck 35c on the upper side (anti-fixed iron core 33 side) of the movable iron core second neck portion 35c, and is movable on the upper surface (anti-fixed iron core 33 side). An iron core top surface groove portion 35aa is formed.
可動鉄心頭部３５ａ及びその可動鉄心頭部上面溝部３５ａａは、その上方（反固定鉄心３３側）が、動作片被駆動部３８ａによって覆われることなく、動作片被駆動部３８ａの動作片被駆動部可動鉄心頭部対応開放部３８ａｂによって、開放されている。
可動鉄心頭部３５ａ及びその可動鉄心頭部上面溝部３５ａａは、その上方（反固定鉄心３３側）が、動作片被駆動部３８ａによって覆われることなく開放されているので、この解放された部分からドライバ（ねじ回し）等の工具を上方から挿入して可動鉄心頭部上面溝部３５ａａに嵌合し電磁コイル３１の中心を中心として例えば右回りに回動すれば、可動鉄心３５は、電磁コイル３１の中心を中心として右回りに回動し、逆に左回りに回動すれば、可動鉄心３５は、電磁コイル３１の中心を中心として左回りに回動する。
The movable iron core head 35a and the movable iron core head upper surface groove 35aa are not covered with the moving piece driven portion 38a at the upper side (the anti-fixed iron core 33 side), and the moving piece driven portion 38a of the moving piece driven portion 38a is driven. It is opened by the open part 38ab corresponding to the movable iron core head.
The movable iron core head 35a and the movable iron core head upper surface groove 35aa are opened above the anti-fixed iron core 33 side without being covered by the operating piece driven portion 38a. If a tool such as a screwdriver (screwdriver) is inserted from above and fitted into the upper surface groove portion 35aa of the movable iron core and rotated, for example, clockwise around the center of the electromagnetic coil 31, the movable iron core 35 is moved to the electromagnetic coil 31. As a result, the movable iron core 35 rotates counterclockwise around the center of the electromagnetic coil 31.
円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６は、円筒状補助可動鉄心内周雌ねじ部３６ａ、円筒状補助可動鉄心外周凹み部３６ｂ、及び円筒状補助可動鉄心下面部磁気対向面３６ｃを有している。
円筒状補助可動鉄心内周雌ねじ部３６ａは、円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６の内周面に施された雌ねじ部であり、可動鉄心３５の可動鉄心下端雄ねじ部３５ｅに螺合している。
The cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 includes a cylindrical auxiliary movable iron core inner peripheral female thread portion 36a, a cylindrical auxiliary movable iron core outer peripheral recess portion 36b, and a cylindrical auxiliary movable iron core lower surface magnetic facing surface 36c. have.
The cylindrical auxiliary movable iron core inner peripheral female screw portion 36 a is a female screw portion provided on the inner peripheral surface of the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36, and the movable iron core lower end male screw portion 35 e of the movable iron core 35. Are screwed together.
円筒状補助可動鉄心外周凹み部３６ｂは、円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６の外周面に形成された凹み部であり、この円筒状補助可動鉄心外周凹み部３６ｂに電磁コイルボビン内周突起部３２ａが係合しており、この円筒状補助可動鉄心外周凹み部３６ｂと電磁コイルボビン内周突起部３２ａとの係合により、電磁コイルボビン内周突起部３２ａが固定であることから、円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６は、電磁コイル３１の中心を中心として非回動である。 The cylindrical auxiliary movable iron core outer periphery recessed portion 36b is a recess formed on the outer peripheral surface of the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36. The coil bobbin inner peripheral protrusion 32a is engaged, and the electromagnetic coil bobbin inner peripheral protrusion 32a is fixed by the engagement between the cylindrical auxiliary movable iron core outer peripheral recess 36b and the electromagnetic coil bobbin inner peripheral protrusion 32a. The cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 is non-rotating around the center of the electromagnetic coil 31.
円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６は、電磁コイル３１の中心を中心として非回動であるので、可動鉄心３５が電磁コイル３１の中心を中心として例えば右回りに回動すれば、上方に（反固定鉄心３３側へ）移動し、可動鉄心３５が電磁コイル３１の中心を中心として例えば左回りに回動すれば、下方に（固定鉄心３３側へ）移動する。 Since the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 is non-rotating around the center of the electromagnetic coil 31, the movable iron core 35 rotates around the center of the electromagnetic coil 31, for example, clockwise. Then, it moves upward (to the anti-fixed iron core 33 side), and if the movable iron core 35 rotates, for example, counterclockwise around the center of the electromagnetic coil 31, it moves downward (to the fixed iron core 33 side).
コイル状押しばね３７は、その一端が固定鉄心３３の固定鉄心上端押しばね受け有底穴３３ｂａ内に嵌入され、他端が可動鉄心３５の可動鉄心下端押しばね受け有底穴３５ｆ内に嵌入されている。従って、円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６が固定鉄心３３に吸引されて固定鉄心３３の方向に移動することによって、可動鉄心３５が円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６と共に固定鉄心３３の方向に移動することによって、コイル状押しばね３７は圧縮され、固定鉄心３３による円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６の吸引が解除されると、圧縮されたコイル状押しばね３７の前記吸引の前の状態へ復旧する解放力によって、可動鉄心３５及び円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６は前記吸引の前の状態へ戻る。 One end of the coiled push spring 37 is fitted into the fixed core upper end push spring receiving bottom hole 33ba of the fixed iron core 33, and the other end is fitted into the movable iron core lower end push spring receiving bottom hole 35f of the movable iron core 35. ing. Accordingly, the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 is attracted to the fixed iron core 33 and moves in the direction of the fixed iron core 33, so that the movable iron core 35 becomes the cylindrical auxiliary movable iron core (electromagnetic attractive force). By moving in the direction of the fixed iron core 33 together with the setting auxiliary iron core 36, the coiled push spring 37 is compressed, and the suction of the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 by the fixed iron core 33 is released. Then, the movable iron core 35 and the cylindrical auxiliary movable iron core (electromagnetic attraction force setting auxiliary iron core) 36 are moved before the attraction by the releasing force of the compressed coil-shaped push spring 37 to restore the state before the attraction. Return to state.
次に動作について説明する。
図１に示す回路遮断器１１１において、通常の通電時で、電源から負荷への主回路に過電流が発生していない状態（つまり、電源側端子３ａと負荷側端子３ｂとの間に、電磁コイル３１、可動子７、可動接触子８ａ、及び固定接触子８ｂを介して流れる電流が定常電流であり過電流ではない状態）では、可動接触子８ａが固定接触子８ｂに接触したＯＮ状態を保持する。
主回路に短絡電流などの大電流が流れた場合（つまり、電源側端子３ａと負荷側端子３ｂとの間に、電磁コイル３１、可動子７、可動接触子８ａ、及び固定接触子８ｂを介して流れる電流が短絡電流などの大電流となった場合）は、この大電流が電磁コイル３１に流れ、この電流により電磁コイル３１が励磁され、電磁コイル３１が発生する磁束により可動鉄心３５、円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６、固定鉄心３３に電磁力が図１の上下方向に働く。
Next, the operation will be described.
In the circuit breaker 111 shown in FIG. 1, no overcurrent has occurred in the main circuit from the power source to the load during normal energization (that is, between the power source side terminal 3a and the load side terminal 3b, In the state where the current flowing through the coil 31, the movable element 7, the movable contact 8a, and the fixed contact 8b is a steady current and not an overcurrent), the ON state in which the movable contact 8a is in contact with the fixed contact 8b is Hold.
When a large current such as a short circuit current flows through the main circuit (that is, between the power supply side terminal 3a and the load side terminal 3b, the electromagnetic coil 31, the movable element 7, the movable contact element 8a, and the fixed contact element 8b). When the current flowing into the current becomes a large current such as a short-circuit current), this large current flows in the electromagnetic coil 31, the electromagnetic coil 31 is excited by this current, and the movable iron core 35 and the cylinder are generated by the magnetic flux generated by the electromagnetic coil 31. Electromagnetic force acts in the vertical direction in FIG. 1 on the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 and the fixed iron core 33.
円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６及び可動鉄心３５に働く電磁力が、コイル状押しばね３７の付勢力を超えると、図６のように円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６及び可動鉄心３５は、電磁コイル３１の内部の固定鉄心３３上面の固定鉄心上面部磁気対向面３３ａまで吸引される。円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６及び可動鉄心３５が固定鉄心３３に吸引されると、当該吸引による可動鉄心３５の動きに連動して、回転中心３８ｃを中心に回転する動作片３８がトリップバー６を押圧し、開閉機構部１１が動作して回路遮断器１１１をトリップさせる。 When the electromagnetic force acting on the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 and the movable iron core 35 exceeds the urging force of the coiled push spring 37, the cylindrical auxiliary movable iron core (electromagnetic The attractive force setting auxiliary iron core) 36 and the movable iron core 35 are attracted to the fixed iron upper surface magnetic facing surface 33a on the upper surface of the fixed iron core 33 inside the electromagnetic coil 31. When the cylindrical auxiliary movable iron core (electromagnetic attraction force setting auxiliary iron core) 36 and the movable iron core 35 are attracted to the fixed iron core 33, they rotate around the rotation center 38c in conjunction with the movement of the movable iron core 35 by the suction. The operating piece 38 presses the trip bar 6 and the opening / closing mechanism 11 operates to trip the circuit breaker 111.
ここで、相対的に吸引される鉄心間の吸引力は当該鉄心３３，３６間の磁気ギャップの２乗比例的に変化するため、例えば、図３のように可動鉄心電磁コイルボビン内鍔状摺動部３５ｄと円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６との間の初期ギャップ長ＬｎがＬ１の状態にあるときは定格電流の３倍の瞬時引き外し特性、図７のように前記ＬｎがＬ２の状態にあるときは定格電流の１０倍の瞬時引き外し特性を付与することが、全くの同一部品を使用した場合でも可能となる。また、可動鉄心３５上部の可動鉄心頭部３５ａの上面のネジ回し用の可動鉄心頭部上面溝部３５ａａにより、電磁引き外し装置２１の組立完了後も、ドライバ等の工具で前記初期ギャップ長Ｌｎの調整が可能となっている、つまり任意の瞬時引き外し特性への設定が可能となっている。 Here, since the attractive force between the relatively attracted iron cores changes proportionally to the square of the magnetic gap between the iron cores 33 and 36, for example, as shown in FIG. When the initial gap length Ln between the portion 35d and the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 is in the L1 state, the instantaneous trip characteristic is three times the rated current, as shown in FIG. When the Ln is in the L2 state, it is possible to give an instantaneous trip characteristic of 10 times the rated current even when using exactly the same parts. In addition, even after the assembly of the electromagnetic trip device 21 is completed, the initial gap length Ln can be set with a tool such as a screwdriver by the movable iron head upper surface groove portion 35aa for screwing on the upper surface of the movable iron core head 35a above the movable iron core 35. Adjustment is possible, that is, any instantaneous trip characteristic can be set.
本実施の形態１によれば、電磁コイル３１の内部の固定鉄心３３と補助可動鉄心（電磁的吸引力設定補助鉄心）３６との間の磁気ギャップ長を所定距離に制御することにより吸引力を制御できるようにしたので、コイル状押しばね３７や電磁コイル３１の交換、可動鉄心の引き外しストロークの変化を伴うことなく、瞬時引き外し電流値を変更することができる。 According to the first embodiment, the attractive force is controlled by controlling the magnetic gap length between the fixed iron core 33 inside the electromagnetic coil 31 and the auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 to a predetermined distance. Since it can be controlled, the instantaneous tripping current value can be changed without changing the coiled spring 37 and the electromagnetic coil 31 and changing the tripping stroke of the movable core.
また、コイル状押しばね３７や電磁コイル３１の交換、可動鉄心の引き外しストロークの変化を伴うことなく、瞬時引き外し電流値を変更することができるので、コイル状押しばね３７や電磁コイル３１の識別管理を含めた製造工程が簡略化でき、標準化および低コスト化を図ることができる。 In addition, since the instantaneous tripping current value can be changed without changing the coiled push spring 37 and the electromagnetic coil 31 and changing the tripping stroke of the movable iron core, the coiled push spring 37 and the electromagnetic coil 31 can be changed. The manufacturing process including identification management can be simplified, and standardization and cost reduction can be achieved.
また、電磁引き外し装置２１の組立完了後においても可動鉄心３５の上部をドライバ等の工具で回すことにより、引き外し電流値の調整ができるため、出荷検査において瞬時ひき外し電流値が基準外のものについても、良品化でき歩留まり向上が期待できる。 Further, even after the assembly of the electromagnetic trip device 21 is completed, the tripping current value can be adjusted by turning the upper part of the movable core 35 with a tool such as a screwdriver. Products can also be improved and yields can be expected to improve.
前述のように、本実施の形態１の回路遮断器は、電源側端子と負荷側端子との間に可動接触子及び固定接触子と直列に接続された電磁コイルとこの電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置を有し、前記可動鉄心が前記可動鉄心に吸引されると開閉機構部によって前記可動接触子が前記固定接触子から開離されることにより遮断動作する回路遮断器において、前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心が設けられ、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されることにより複数種類の引き外し特性に設定されるものである。 As described above, the circuit breaker according to the first embodiment includes the electromagnetic coil connected in series with the movable contact and the stationary contact between the power supply side terminal and the load side terminal, and the magnetic path of the electromagnetic coil. A fixed iron core and a movable iron core disposed on the electromagnetic coil, and when an electric current of a predetermined magnitude flows through the electromagnetic coil, the movable iron core has an electromagnetic trip device that is attracted to the fixed iron core by an electromagnetic attraction force, In the circuit breaker that operates when the movable iron core is attracted to the movable iron core and then the movable contact is separated from the fixed contact by the opening / closing mechanism, the circuit breaker operates between the movable iron core and the fixed iron core. An electromagnetic attraction force setting auxiliary iron core that can move in the direction of attraction is provided, and the position of the attraction direction of the electromagnetic attraction force setting auxiliary iron core is adjusted by a position adjustment mechanism, whereby a plurality of types of tripping special features are provided. And it is set to.
また、前述のように、本実施の形態１の電磁引き外し装置は、回路遮断器の電源側端子と前記回路遮断器の負荷側端子との間に前記回路遮断器の可動接触子及び前記回路遮断器の固定接触子と直列に接続される電磁コイルと、この電磁コイルの磁路内に配設された固定鉄心及び可動鉄心とを備え、前記電磁コイルに所定の大きさの電流が流れると前記可動鉄心が前記固定鉄心に電磁的吸引力により吸引される電磁引き外し装置であって、前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心が設けられ、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されるものである。 Further, as described above, the electromagnetic trip device of Embodiment 1 includes the movable contact of the circuit breaker and the circuit between the power supply side terminal of the circuit breaker and the load side terminal of the circuit breaker. An electromagnetic coil connected in series with the stationary contact of the circuit breaker, and a fixed iron core and a movable iron core arranged in the magnetic path of the electromagnetic coil, and when a current of a predetermined magnitude flows through the electromagnetic coil An electromagnetic trip device in which the movable iron core is attracted to the fixed iron core by an electromagnetic attraction force, and an electromagnetic attraction force setting auxiliary iron core movable between the movable iron core and the fixed iron core in the suction direction. And the position of the electromagnetic attraction force setting auxiliary iron core in the attraction direction is adjusted by a position adjusting mechanism.
また、前述のように、本実施の形態１の回路遮断器及びその電磁引き外し装置は、前記電磁的吸引力設定補助鉄心が、前記可動鉄心に、前記吸引の方向に移動可能に取り付けられているものであり、また、前記固定鉄心の前記吸引を司る磁気対向面と前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面とが互いに平行であり、前記固定鉄心の前記磁気対向面及び前記電磁的吸引力設定補助鉄心の前記磁気対向面の何れも前記吸引の方向と直交するものである。 As described above, in the circuit breaker and the electromagnetic tripping device according to the first embodiment, the electromagnetic attraction force setting auxiliary iron core is attached to the movable iron core so as to be movable in the attraction direction. The magnetic facing surface that controls the attraction of the fixed iron core and the magnetic facing surface that controls the attraction of the electromagnetic attracting force setting auxiliary iron core are parallel to each other, and the magnetic facing surface of the fixed iron core And both of the magnetic facing surfaces of the electromagnetic attractive force setting auxiliary iron core are orthogonal to the direction of the attractive force.
また、前述のように、本実施の形態１の回路遮断器及びその電磁引き外し装置は、前記電磁的吸引力設定補助鉄心が、前記可動鉄心に、前記吸引の方向に移動可能に螺着されているものであり、また、前記電磁的吸引力設定補助鉄心に雌ねじ部が形成され、前記可動鉄心に、前記電磁的吸引力設定補助鉄心の前記雌ねじ部に螺合する雄ねじ部が形成され、前記可動鉄心が前記電磁コイルの中心を中心として可回動であり、前記電磁的吸引力設定補助鉄心が前記電磁コイルの中心を中心として非回動であり、前記可動鉄心が前記電磁コイルの中心を中心として回動されることにより、前記電磁的吸引力設定補助鉄心の前記吸引方向の位置が調整されるものである。 As described above, in the circuit breaker and the electromagnetic trip device thereof according to the first embodiment, the electromagnetic attraction force setting auxiliary iron core is screwed to the movable iron core so as to be movable in the attraction direction. A female screw portion is formed in the electromagnetic attractive force setting auxiliary iron core, and a male screw portion that is screwed into the female screw portion of the electromagnetic attractive force setting auxiliary iron core is formed in the movable iron core, The movable iron core is rotatable about the center of the electromagnetic coil, the electromagnetic attractive force setting auxiliary iron core is non-rotating about the center of the electromagnetic coil, and the movable iron core is the center of the electromagnetic coil. , The position in the suction direction of the electromagnetic attractive force setting auxiliary iron core is adjusted.
実施の形態２．
以下、この発明の実施の形態２を図８によって説明する。図８は回路遮断器の電磁引き外し装置の他の例を縦断側面図で示す図である。
本実施の形態２においては、図８に例示のように、巻回された電磁コイル３１の内部に略円筒状の電磁コイルボビン３２が緩挿され、電磁コイルボビン３２の図中下側の一端には円錐台状の固定鉄心３３が遊嵌して設けられている。観点を変えれば、固定鉄心３３の前記吸引を司る磁気対向面３３ａと円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）３６の前記吸引を司る磁気対向面３６ｃとが互いに平行であり、前記固定鉄心の前記磁気対向面３３ａ及び前記電磁的吸引力設定補助鉄心３６の前記磁気対向面３６ｃの何れも前記吸引の方向に対して傾斜している。これらの構造以外の構造及び機能は、前述の実施の形態１と同じであるので、その説明は割愛する。
Embodiment 2. FIG.
A second embodiment of the present invention will be described below with reference to FIG. FIG. 8 is a longitudinal sectional side view showing another example of an electromagnetic trip device for a circuit breaker.
In the second embodiment, as illustrated in FIG. 8, a substantially cylindrical electromagnetic coil bobbin 32 is loosely inserted into the wound electromagnetic coil 31, and at the lower end of the electromagnetic coil bobbin 32 in the figure, A frustoconical fixed iron core 33 is provided loosely. In other words, the magnetic facing surface 33a that controls the attraction of the fixed iron core 33 and the magnetic facing surface 36c that controls the attraction of the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) 36 are parallel to each other. Both the magnetic facing surface 33a of the fixed iron core and the magnetic facing surface 36c of the electromagnetic attracting force setting auxiliary iron core 36 are inclined with respect to the attracting direction. Since structures and functions other than these structures are the same as those in the first embodiment, the description thereof will be omitted.
本実施の形態２においては、電磁的吸引力設定補助鉄心３６の磁気対向面３６ｃが固定鉄心３３の吸引を司る磁気対向面３３ａに沿うような形状とし、磁気対向面積を増加させてあるので、一般の回路遮断器に比べ瞬時引外し電流値を低く設定した半導体装置の過電流保護等を用途にした低インスタント形の回路遮断器にも好適である。 In the second embodiment, the magnetic facing surface 36c of the electromagnetic attractive force setting auxiliary iron core 36 is shaped so as to follow the magnetic facing surface 33a that controls the attraction of the fixed iron core 33, and the magnetic facing area is increased. It is also suitable for a low-instant circuit breaker that is used for overcurrent protection of a semiconductor device whose instantaneous tripping current value is set lower than that of a general circuit breaker.
実施の形態３．
以下、この発明の実施の形態３を図９によって説明する。図９は回路遮断器の電磁引き外し装置の更に他の例を縦断側面図で示す図である。
本実施の形態３においては、図９に例示のように、固定鉄心３３側に可動補助固定鉄心（電磁的吸引力設定補助鉄心）３９を設け、可動補助固定鉄心位置調整子４０を設けた事例である。
Embodiment 3 FIG.
A third embodiment of the present invention will be described below with reference to FIG. FIG. 9 is a longitudinal sectional side view showing still another example of an electromagnetic trip device for a circuit breaker.
In the third embodiment, as illustrated in FIG. 9, the movable auxiliary fixed iron core (electromagnetic attractive force setting auxiliary iron core) 39 is provided on the fixed iron core 33 side, and the movable auxiliary fixed iron core position adjuster 40 is provided. It is.
可動補助固定鉄心（電磁的吸引力設定補助鉄心）３９は、可動補助固定鉄心上端鍔状摺動部３９ａ、可動補助固定鉄心上端鍔状摺動部３９ａの上面部の磁気対向面３９ａａ、可動補助固定鉄心上端鍔状摺動部３９ａの押しばね支持部３３ｂの案内孔３９ａｂ、可動補助固定鉄心３９の下端の円筒状摺動部３９ｂ、可動補助固定鉄心３９の下端円筒状摺動部３９ｂのラック部３９ｂａ、及び可動補助固定鉄心下端円筒状摺動部案内の環状穴３９ｃを有している。
可動補助固定鉄心位置調整子４０は、可動補助固定鉄心位置調整子内端のピニオン部４０ａ、及び可動補助固定鉄心位置調整子外端の調整摘み部４０ｂを有している。また、可動補助固定鉄心位置調整子４０は、固定鉄心３３の側壁低部に設けられた可動補助固定鉄心位置調整子挿通孔３３ｃに挿通されている。
The movable auxiliary fixed iron core (electromagnetic attractive force setting auxiliary iron core) 39 includes a movable auxiliary fixed iron core upper end hook-shaped sliding portion 39a, a magnetic facing surface 39aa on the upper surface portion of the movable auxiliary fixed iron core upper end hook-shaped sliding portion 39a, and a movable auxiliary Rack of the guide hole 39ab of the push spring support portion 33b of the fixed iron core upper end saddle-shaped sliding portion 39a, the cylindrical sliding portion 39b at the lower end of the movable auxiliary fixed iron core 39, and the lower cylindrical slide portion 39b of the movable auxiliary fixed iron core 39 Part 39ba, and a movable auxiliary fixed iron core lower end cylindrical sliding part guide annular hole 39c.
The movable auxiliary fixed iron core position adjuster 40 has a pinion portion 40a at the inner end of the movable auxiliary fixed iron core position adjuster and an adjustment knob 40b at the outer end of the movable auxiliary fixed iron core position adjuster. The movable auxiliary fixed iron core position adjuster 40 is inserted into a movable auxiliary fixed iron core position adjuster insertion hole 33 c provided in the lower side wall of the fixed iron core 33.
可動補助固定鉄心位置調整子外端の調整摘み部４０ｂを回動すればピニオン部４０ａが回動し、この回動に伴って、ピニオン部４０ａが噛合したラック部３９ｂａが上下方向（前記吸引の方向）に移動し、ラック部３９ｂａと一体の可動補助固定鉄心（電磁的吸引力設定補助鉄心）も上下方向（前記吸引の方向）に移動する。
従って、前述の実施の形態１と同様に、コイル状押しばね３７や電磁コイル３１の交換、可動鉄心の引き外しストロークの変化を伴うことなく、瞬時引き外し電流値を変更することができる。
これらの構造以外の構造及び機能は、前述の実施の形態１と同じであるので、その説明は割愛する。
When the adjustment knob 40b at the outer end of the movable auxiliary fixed iron core position adjuster is rotated, the pinion 40a is rotated. With this rotation, the rack 39ba engaged with the pinion 40a is moved in the vertical direction (the suction The movable auxiliary fixed iron core (electromagnetic attractive force setting auxiliary iron core) integrated with the rack portion 39ba also moves in the vertical direction (the direction of attraction).
Therefore, as in the first embodiment, the instantaneous tripping current value can be changed without changing the coiled spring 37 and the electromagnetic coil 31 and changing the tripping stroke of the movable core.
Since structures and functions other than these structures are the same as those in the first embodiment, the description thereof will be omitted.
なお、本実施の形態３において、前述の実施の形態２と同様に、前記可動鉄心の前記磁気対向面及び前記電磁的吸引力設定補助鉄心の前記磁気対向面の何れも前記吸引の方向に対して傾斜している構造とすれば、前述の実施の形態２と同様に、磁気対向面積が増加し、一般の回路遮断器に比べ瞬時引外し電流値を低く設定した半導体装置の過電流保護等を用途にした低インスタント形の回路遮断器にも好適なものとなる。 In the third embodiment, as in the second embodiment, both the magnetic facing surface of the movable iron core and the magnetic facing surface of the electromagnetic attractive force setting auxiliary iron core are in the direction of attraction. If the structure is inclined, the magnetic facing area increases as in the second embodiment, and the overcurrent protection of the semiconductor device in which the instantaneous tripping current value is set lower than that of a general circuit breaker, etc. It is also suitable for a low-instant circuit breaker for the purpose of use.
なお、図１〜図８の各図中、同一符合は同一または相当部分を示す。 In addition, in each figure of FIGS. 1-8, the same code | symbol shows the same or an equivalent part.
なお、本発明は、その発明の範囲内において、各実施の形態を適宜、変形、省略することができる。 In the present invention, each embodiment can be appropriately modified or omitted within the scope of the invention.
１ ベース、 ２ カバー、 ３ａ 電源側端子、３ｂ 負荷側端子、
４ 可動子ホルダ、 ５ 取付けねじ（電磁引き外し装置取付けねじ）、
６ トリップバー、７ 可動子、８ａ 可動接触子、８ｂ 固定接触子、
９ 消弧室、 １０ 開閉ハンドル、 １１ 開閉機構部、
１１１ 回路遮断器、 ２１ 電磁引き外し装置、 ３１ 電磁コイル、
３１３ 電磁コイル電源側端子間可撓接続導体、
３２ 円筒状電磁コイルボビン、 ３２ａ 電磁コイルボビン内周突起部、
３２ｂ 電磁コイルボビン上端上底部、
３２ｂａ 電磁コイルボビン上端上底部の可動鉄心第一首部案内孔、
３３ 固定鉄心、 ３３ａ 固定鉄心上面部磁気対向面、
３３ｂ 固定鉄心上部円柱状押しばね支持部、
３３ｂａ 固定鉄心上端押しばね受け有底穴、
３３ｃ 可動補助固定鉄心位置調整子挿通孔、
３４ 継鉄、 ３４ａ 継鉄垂直部、 ３４ｂ 継鉄係合部、
３５ 可動鉄心、３５ａ 可動鉄心頭部、３５ａａ 可動鉄心頭部上面溝部、 ３５ｂ 可動鉄心第一首部、 ３５ｃ 可動鉄心第二首部、
３５ｄ 可動鉄心電コイルボビン内鍔状摺動部、３５ｅ 可動鉄心下端雄ねじ部、
３５ｆ 可動鉄心下端押しばね受け有底穴、
３５ｇ 可動鉄心下面部磁気対向面、
３６ 円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）、
３６ａ 円筒状補助可動鉄心内周雌ねじ部、３６ｂ 円筒状補助可動鉄心外周凹み部、
３６ｃ 円筒状補助可動鉄心下面部磁気対向面、
３７ コイル状押しばね、 ３８ 動作片、 ３８ａ 動作片被駆動部、
３８ａａ 動作片被駆動部可動鉄心頭部係合部、
３８ａｂ 動作片被駆動部可動鉄心頭部対応開放部、
３８ａｃ 動作片被駆動部可動鉄心第二首部貫通孔、
３９ 可動補助固定鉄心（電磁的吸引力設定補助鉄心）、
３９ａ 可動補助固定鉄心上端鍔状摺動部、
３９ａａ 可動補助固定鉄心上端鍔状摺動部の上面部の磁気対向面、
３９ａｂ 可動補助固定鉄心上端鍔状摺動部の押しばね支持部の案内孔、
３９ｂ 可動補助固定鉄心の下端円筒状摺動部、
３９ｂａ 可動補助固定鉄心の下端円筒状摺動部のラック部、
３９ｃ 可動補助固定鉄心下端円筒状摺動部案内の環状穴、
４０ 可動補助固定鉄心位置調整子、
４０ａ 可動補助固定鉄心位置調整子内端のピニオン部、
４０ｂ 可動補助固定鉄心位置調整子外端の調整摘み部、
Ｌｎ，Ｌ１，Ｌ２ 円筒状補助可動鉄心（電磁的吸引力設定補助鉄心）と固定鉄心と の初期ギャップ（可動補助固定鉄心（電磁的吸引力設定補助鉄心）と可動鉄心との初期 ギャップ）。
1 base, 2 cover, 3a power supply side terminal, 3b load side terminal,
4 mover holder, 5 mounting screw (electromagnetic tripping device mounting screw),
6 Trip bar, 7 Movable element, 8a Movable contactor, 8b Fixed contactor,
9 arc extinguishing chamber, 10 opening / closing handle, 11 opening / closing mechanism,
111 circuit breaker, 21 electromagnetic trip device, 31 electromagnetic coil,
313, flexible connection conductor between the electromagnetic coil power supply side terminals,
32 cylindrical electromagnetic coil bobbin, 32a electromagnetic coil bobbin inner peripheral protrusion,
32b electromagnetic coil bobbin upper end upper bottom part,
32ba movable iron core first neck guide hole in the upper upper part of the electromagnetic coil bobbin,
33 fixed iron core, 33a fixed iron core top surface magnetic facing surface,
33b Fixed iron core upper cylindrical push spring support,
33ba Fixed core top end push spring receiving bottom hole,
33c Movable auxiliary fixed iron core position adjuster insertion hole,
34 yoke, 34a yoke vertical part, 34b yoke engaging part,
35 Movable iron core, 35a Movable iron core head, 35aa Movable iron core head upper surface groove, 35b Movable iron core first neck, 35c Movable iron core second neck,
35d Movable iron core coil bobbin saddle-like sliding part, 35e movable iron core lower end male thread part,
35f Movable iron core lower end push spring receiving bottom hole,
35g The bottom surface of the movable core, the magnetic facing surface,
36 cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core),
36a Cylindrical auxiliary movable iron core inner periphery female thread part, 36b Cylindrical auxiliary movable iron core outer periphery recessed part,
36c A cylindrical auxiliary movable iron core bottom surface magnetic facing surface,
37 coiled spring, 38 operating piece, 38a operating piece driven part,
38aa operation piece driven part movable iron core head engaging part,
38ab operation piece driven part movable iron core corresponding opening part,
38ac operation piece driven part movable iron core second neck through hole,
39 Movable auxiliary fixed iron core (electromagnetic attractive force setting auxiliary iron core),
39a Movable auxiliary fixed iron core upper end bowl-shaped sliding part,
39aa The magnetically opposed surface of the upper surface of the movable auxiliary fixed iron core top bowl-shaped sliding part,
39ab guide hole of the pressing spring support part of the movable auxiliary fixed iron core upper end saddle-like sliding part,
39b Cylindrical sliding part at the lower end of the movable auxiliary fixed iron core,
39ba The rack portion of the bottom cylindrical sliding portion of the movable auxiliary fixed iron core,
39c An annular hole in the guide of the cylindrical sliding part at the lower end of the movable auxiliary fixed iron core
40 Movable auxiliary fixed iron core position adjuster,
40a The pinion part of the inner end of the movable auxiliary fixed iron core position adjuster,
40b Adjustable knob on the outer end of the movable auxiliary fixed iron core position adjuster,
Ln, L1, L2 Initial gap between the cylindrical auxiliary movable iron core (electromagnetic attractive force setting auxiliary iron core) and the fixed iron core (initial gap between the movable auxiliary fixed iron core (electromagnetic attractive force setting auxiliary iron core) and the movable iron core).
Claims (10)
前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心を有し、
前記固定鉄心は、前記吸引時に前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面と当接しない磁気対向面を備え、
前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されることにより複数種類の引き外し特性に設定されることを特徴とする回路遮断器。 The electromagnetic coil comprising: an electromagnetic coil connected in series with a movable contact and a stationary contact between a power supply side terminal and a load side terminal; and a fixed iron core and a movable iron core disposed in a magnetic path of the electromagnetic coil When an electric current of a predetermined magnitude flows, the movable iron core has an electromagnetic trip device that is attracted to the fixed iron core by an electromagnetic attraction force. When the movable iron core is attracted to the fixed iron core, the opening / closing mechanism portion In the circuit breaker that operates to be cut off when the movable contact is separated from the fixed contact,
An electromagnetic attraction force setting auxiliary iron core movable in the direction of attraction between the movable iron core and the fixed iron core ;
The fixed iron core includes a magnetic facing surface that does not come into contact with the magnetic facing surface that controls the attraction of the electromagnetic attracting force setting auxiliary iron core during the attraction,
A circuit breaker characterized in that a plurality of types of tripping characteristics are set by adjusting a position of the attraction direction of the electromagnetic attraction force setting auxiliary iron core by a position adjusting mechanism.
前記電磁的吸引力設定補助鉄心が、前記可動鉄心に、前記吸引の方向に移動可能に取り付けられていることを特徴とする回路遮断器。 The circuit breaker according to claim 1,
The circuit breaker, wherein the electromagnetic attractive force setting auxiliary iron core is attached to the movable iron core so as to be movable in the attraction direction.
前記固定鉄心の前記磁気対向面と前記電磁的吸引力設定補助鉄心の前記磁気対向面とが互いに平行であり、 前記固定鉄心の前記磁気対向面及び前記電磁的吸引力設定補助鉄心の前記磁気対向面の何れも前記吸引の方向と直交することを特徴とする回路遮断器。 The circuit breaker according to claim 1,
Wherein said magnetic opposing surfaces of the fixed iron core and the front Ki磁 air facing surface of the electromagnetic attractive force setting auxiliary cores are parallel to each other, wherein the magnetic facing surface and the electromagnetic attraction force setting auxiliary iron core of the stator core A circuit breaker characterized in that all of the magnetic facing surfaces are orthogonal to the direction of attraction.
前記固定鉄心の前記磁気対向面と前記電磁的吸引力設定補助鉄心の前記磁気対向面とが互いに平行であり、
前記固定鉄心の前記磁気対向面及び前記電磁的吸引力設定補助鉄心の前記磁気対向面の何れも前記吸引の方向に対して傾斜していることを特徴とする回路遮断器。 The circuit breaker according to claim 1,
The front Ki磁 gas facing surface of the fixed iron core and the front Ki磁 air facing surface of the electromagnetic attractive force setting auxiliary cores are parallel to each other,
The circuit breaker characterized in that both the magnetic facing surface of the fixed iron core and the magnetic facing surface of the electromagnetic attractive force setting auxiliary iron core are inclined with respect to the direction of attraction.
前記電磁的吸引力設定補助鉄心が、前記可動鉄心に、前記吸引の方向に移動可能に螺着されていることを特徴とする回路遮断器。 The circuit breaker according to any one of claims 1 to 4,
The circuit breaker, wherein the electromagnetic attractive force setting auxiliary iron core is screwed to the movable iron core so as to be movable in the attraction direction.
前記電磁的吸引力設定補助鉄心に雌ねじ部が形成され、
前記可動鉄心に、前記電磁的吸引力設定補助鉄心の前記雌ねじ部に螺合する雄ねじ部が形成され、
前記可動鉄心が前記電磁コイルの中心を中心として回動可能であり、 前記電磁的吸引力設定補助鉄心が前記電磁コイルの中心を中心として非回動であり、
前記可動鉄心が前記電磁コイルの中心を中心として回動されることにより、前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が調整される
ことを特徴とする回路遮断器。 The circuit breaker according to any one of claims 1 to 4,
A female thread portion is formed in the electromagnetic attractive force setting auxiliary iron core,
The movable iron core is formed with a male screw portion that is screwed into the female screw portion of the electromagnetic attractive force setting auxiliary iron core,
The movable iron core is rotatable around the center of the electromagnetic coil, and the electromagnetic attractive force setting auxiliary iron core is non-rotating around the center of the electromagnetic coil;
The circuit breaker according to claim 1, wherein the position of the electromagnetic attraction force setting auxiliary iron core in the attraction direction is adjusted by rotating the movable iron core about the center of the electromagnetic coil.
前記電磁的吸引力設定補助鉄心が、前記固定鉄心に、前記吸引の方向に移動可能に取り付けられていることを特徴とする回路遮断器。 The circuit breaker according to claim 1,
The circuit breaker, wherein the electromagnetic attracting force setting auxiliary iron core is attached to the fixed iron core so as to be movable in the sucking direction.
前記可動鉄心の前記吸引を司る磁気対向面と前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面とが互いに平行であり、
前記可動鉄心の前記磁気対向面及び前記電磁的吸引力設定補助鉄心の前記磁気対向面の何れも前記吸引の方向と直交することを特徴とする回路遮断器。 The circuit breaker according to claim 7,
The magnetic facing surface that controls the attraction of the movable iron core and the magnetic facing surface that controls the attraction of the electromagnetic attraction force setting auxiliary iron core are parallel to each other,
The circuit breaker characterized in that both the magnetic facing surface of the movable iron core and the magnetic facing surface of the electromagnetic attractive force setting auxiliary iron core are orthogonal to the direction of attraction.
前記可動鉄心の前記吸引を司る磁気対向面と前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面とが互いに平行であり、
前記可動鉄心の前記磁気対向面及び前記電磁的吸引力設定補助鉄心の前記磁気対向面の何れも前記吸引の方向に対して傾斜していることを特徴とする回路遮断器。 The circuit breaker according to claim 7,
The magnetic facing surface that controls the attraction of the movable iron core and the magnetic facing surface that controls the attraction of the electromagnetic attraction force setting auxiliary iron core are parallel to each other,
The circuit breaker characterized in that both the magnetic facing surface of the movable iron core and the magnetic facing surface of the electromagnetic attractive force setting auxiliary iron core are inclined with respect to the direction of attraction.
前記可動鉄心と前記固定鉄心との間に前記吸引の方向に移動可能な電磁的吸引力設定補助鉄心が設けられ、
前記固定鉄心は、前記吸引時に前記電磁的吸引力設定補助鉄心の前記吸引を司る磁気対向面と当接しない磁気対向面を備え、
前記電磁的吸引力設定補助鉄心の前記吸引の方向の位置が位置調整機構によって調整されることを特徴とする電磁引き外し装置。 An electromagnetic coil connected in series with a movable contact of the circuit breaker and a fixed contact of the circuit breaker between a power supply side terminal of the circuit breaker and a load side terminal of the circuit breaker, and the electromagnetic coil A fixed iron core and a movable iron core disposed in the magnetic path of the electromagnetic coil, and when a current of a predetermined magnitude flows through the electromagnetic coil, the movable iron core is attracted to the fixed iron core by an electromagnetic attraction force. A device,
An electromagnetic attraction force setting auxiliary iron core movable in the direction of attraction is provided between the movable iron core and the fixed iron core,
The fixed iron core includes a magnetic facing surface that does not come into contact with the magnetic facing surface that controls the attraction of the electromagnetic attracting force setting auxiliary iron core during the attraction,
An electromagnetic trip device characterized in that a position adjusting mechanism adjusts the position of the electromagnetic attraction force setting auxiliary iron core in the attraction direction.
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| CN104124114B (en) * | 2014-06-24 | 2016-08-24 | 上海诺雅克电气有限公司 | The short-circuit protection action current control method of multipolar electromagnetic electrical apparatus release and device |
| CN108695118A (en) * | 2017-04-07 | 2018-10-23 | 王静洋 | A kind of circuit breaker operation mechanism with solenoid actuated |
| CN111886668B (en) * | 2018-03-23 | 2023-03-10 | 三菱电机株式会社 | Trip device |
| CN108321056B (en) * | 2018-04-02 | 2024-05-03 | 浙江智美电气有限公司 | Circuit breaker pushed by electromagnet |
| WO2020026357A1 (en) * | 2018-07-31 | 2020-02-06 | 三菱電機株式会社 | Breaker |
| CN110299271B (en) * | 2019-07-05 | 2024-06-04 | 苏州未来电器股份有限公司 | Bistable electromagnetic mechanism |
| JP7407565B2 (en) * | 2019-11-12 | 2024-01-04 | 河村電器産業株式会社 | Tripping devices and circuit breakers |
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| JPS53132779A (en) * | 1977-04-22 | 1978-11-18 | Matsushita Electric Works Ltd | Shorttcircuit current detector |
| US4288770A (en) * | 1979-11-28 | 1981-09-08 | General Electric Company | Thermal override for static trip circuit breakers |
| FR2557353B1 (en) * | 1983-12-26 | 1986-04-11 | Merlin Gerin | MAGNETOTHERMAL TRIGGER IN SHAPE MEMORY MATERIAL, ASSOCIATED WITH A CIRCUIT BREAKER MECHANISM |
| JPS6176660U (en) * | 1984-10-25 | 1986-05-23 | ||
| FR2639148B1 (en) * | 1988-11-16 | 1991-08-02 | Merlin Gerin | MAGNETIC TRIGGER WITH WIDE TRIGGER THRESHOLD ADJUSTMENT RANGE |
| DE4004359A1 (en) * | 1990-02-13 | 1991-08-14 | Kloeckner Moeller Gmbh | Electro-magnetic quick-release mechanism for electric switch - has magnetic circuit incorporating bottom wall section of ferromagnetic housing of quick-release mechanism |
| JPH10125206A (en) * | 1996-10-24 | 1998-05-15 | Fuji Electric Co Ltd | Electromagnetic trip device for circuit breaker |
| US5886605A (en) * | 1998-05-07 | 1999-03-23 | Eaton Corporation | Actuator assembly with calibration means and electrical power switch apparatus incorporating the actuator assembly with calibration means |
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