JP4237431B2 - Pull-out type circuit breaker - Google Patents

Pull-out type circuit breaker Download PDF

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Publication number
JP4237431B2
JP4237431B2 JP2001299090A JP2001299090A JP4237431B2 JP 4237431 B2 JP4237431 B2 JP 4237431B2 JP 2001299090 A JP2001299090 A JP 2001299090A JP 2001299090 A JP2001299090 A JP 2001299090A JP 4237431 B2 JP4237431 B2 JP 4237431B2
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Japan
Prior art keywords
contact
terminal
drawer
shaft
circuit breaker
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Expired - Fee Related
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JP2001299090A
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Japanese (ja)
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JP2003109474A (en
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雅夫 堀川
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寺崎電気産業株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、引出型回路遮断器の遮断器本体と引出枠との間を接続及び断路する引出接触子装置に関する。
【0002】
【従来の技術】
従来の引出型回路遮断器が図4ないし図7に示されている。この引出型回路遮断器は、枠端子51を備えた引出枠52と本体端子53を備え引出枠内を移動する遮断器本体54からなる。本体端子53にはブリッジ形の引出接触子装置55が取り付けられており、図4に示されているように遮断器本体54と引出枠52とが接続状態にあるときは、引出接触子装置55が枠端子51と接触している。また、図5に示されているように遮断器本体54と引出枠52とが断路状態にあるときは、引出接触子装置55と枠端子51が開離している。すなわち、本体端子53は特許請求の範囲において記載されている一方の端子であり、枠端子51は他方の端子である。この引出型回路遮断器とは異なり、枠端子に引出接触子装置が装着されているものもあり、この場合は枠端子が一方の端子となり、本体端子は他方の端子となる。
【0003】
図6及び図7を参照して、引出接触子装置55は、枠端子51及び本体端子53のそれぞれ上面及び下面と接触するそれぞれ複数片の引出接触子56を備えており、上側及び下側の引出接触子56は互いに対向している。なお、端子の上面及び下面は特許請求の範囲に記載されている表及び裏に相当するものである。引出接触子56はその一端部に形成されている上下方向に長い長孔56aを挿通する接触子軸57によって回転自在に保持されている。軸保持板58は断面がコ字状なるように形成されてその両腕において本体端子53の側面部に装着されており、接触子軸57は軸保持板58の両腕部において保持されている。
【0004】
上側の隣り合う一対の引出接触子56と対向する下側の隣り合う一対の引出接触子56を一組として、隣り合う一対の引出接触子56間に装着された上下一対の軸59の間に接触子ばね60が設けられ、接触子ばね60は引出接触子56をその上下の対向間隔が狭まるように付勢している。引出接触子56は共に弧状に形成された本体側接触縁56b及び枠側接触縁56cを有し、本体側接触縁56bは本体端子53と常時接触し、上下の枠側接触縁56cは断路状態において所定の間隔G1をもって対向している。この対向間隔G1は、軸保持板58の両腕をつなぐ連結部58aの上下の縁に引出接触子56が押し付けられることによって形成されている。なお、この対向間隔G1は枠端子51の厚みG2より小さい値に設定されているため、挿入が完了した後においては軸保持板58の連結部58aと引出接触子56との間に隙間が形成されている。しかし、この隙間が小さすぎると枠側接触縁56cや枠端子51に摩耗などが生じて隙間がなくなることがあり、この場合は引出接触子56と枠端子51が接触しなくなるため、G2とG1の間には相応の差ができるように軸保持板58の両腕をつなぐ連結部58aの巾寸法が決められている。
【0005】
この引出型回路遮断器の挿入操作が行われたときの動作は、引出接触子56の枠側接触縁56cが枠端子51の先端の傾斜面51aと接触して、上下の引出接触子56の対向間隔を広げながら傾斜面51a上を摺動して枠端子51の平面部分51bに達する。この動作において、枠側接触縁56cが傾斜面51aを摺動するとき、引出接触子56に接触子ばね60の反作用力Fの接触子軸方向の分力FAが図6に鎖線で示されているごとく接触子軸57を湾曲させるように作用する。この湾曲が発生すれば中央部付近の引出接触子56が左方向に変位し枠側接触縁56cが枠端子51の平面部分51bに達しないこととなるため接続が不完全となる。これを防止するため、ストッパ61が本体端子53上に設けられ引出接触子56の左方向の変位を阻止する構造になっている。
【0006】
【発明が解決しようとする課題】
このような従来の引出形回路遮断器は、枠端子51と本体端子53の上下方向の位置にずれが生じている場合は、上側及び下側のいずれか一方の引出接触子56と枠端子51との接触が不完全になるという問題があり、部品寸法のばらつきや組立のばらつきをきびしく管理する必要があるという問題があった。
【0007】
したがって、本発明は、本体端子と枠端子の上下方向の位置が多少ずれても確実な接触が得られる、製造が簡単で品質の安定した引出接触子装置を有する引出型回路遮断器を提供することにある。
【0008】
【課題を解決するための手段】
上記の問題を解決するために、本発明は、いずれも端子を備えた引出枠及び引出枠内を移動自在の遮断器本体、並びに引出枠及び遮断器本体のいずれか一方の端子に装着され該一方の端子と他方の端子とを接続及び断路させるブリッジ形引出接触子装置を有し、引出接触子装置は、両端子のそれぞれ表側及び裏側で接触するように対向配置された複数片の引出接触子と、表側及び裏側の引出接触子を回転自在に保持する一対の接触子軸と、接触子軸を保持する軸保持部材と、引出接触子の対向間隔を狭める方向に作用する接触子ばねを備えた引出型回路遮断器において、軸保持部材は断面がコ字状であってその両腕において装着側端子の両側面に回転自在に装着されるとともに、表側及び裏側の接触子軸にそれぞれ一方及び他方の腕が回転自在に保持され両腕をつなぐ連結部に装着側端子の移動方向の端面と接触する弧状の接触縁が形成された軸湾曲阻止部材を備えたこととしている。
【0009】
このような構成により、挿入操作中に接触子ばねの反力が接触子軸に作用しても、接触子軸に保持されている軸湾曲阻止部材が端子の端面と接して軸の湾曲を防止する。また、枠端子と本体端子が上下方向にずれている場合は、挿入操作途中に一方の接触子軸が端子の端面に近づく方向に他方の接触子軸が遠ざかる方向に軸保持部材に回転力が作用する。このとき、端面と接触している軸湾曲保持部材の接触縁が弧状であるため軸保持部材が円滑に回転し、対向する双方の引出接触子は確実に両端子と接触する。
【0010】
【発明の実施の形態】
本発明による引出型回路遮断器の実施の形態を、図1ないし図3に示される実施例において説明する。なお、この実施例は従来の技術に記載した回路遮断器と大部分の点で同一であるため、ここでは同一部品は同一符号を付して相異する点だけを説明する。すなわち、相異点は引出接触子装置の構成にあって、本実施例による引出接触子装置1は従来の引出接触子装置55と比較して、従来技術の軸保持板58に相当する軸保持板2を回転自在に装着した点及び挿入操作時に接触子軸57の湾曲を防止する軸湾曲阻止部材3を設けた点にある。
【0011】
軸保持板2はブッシュ4を介してねじ5によって回転自在に本体端子53に装着されており、引出接触子56の枠側接触縁56cの対向間隔G1は軸保持板2の両腕を連結する連結部2aの上下の縁に上下の引出接触子56が係止することによって形成されている。また、軸湾曲阻止部材3は、隣り合う引出接触子56の隙間であって接触子ばね60が装着されていない隙間に装着されている。軸湾曲阻止部材3は略コ字状の金属板であって、その一方及び他方の腕の端部に形成された孔においてそれぞれ上側及び下側の接触子軸57に保持され、両腕をつなぐ連結部の内側に弧状の接触縁3aが形成されている。
【0012】
このように構成されている実施例の引出型回路遮断器の挿入動作において、枠側接触縁56cが枠端子51の傾斜面51aを摺動するとき、接触子ばね60の反作用力が接触子軸57と共に軸湾曲阻止部材3を左方向に付勢する。しかし、軸湾曲阻止部材3の接触縁3aが本体端子53の端面53aと接して軸湾曲阻止部材3が変位しないため接触子軸57の湾曲が阻止される。
【0013】
次に、図3を参照して、この実施例の引出型回路遮断器が枠端子51と本体端子53の上下位置がずれて組み立てられている場合の挿入操作時の動作について説明する。例えば枠端子51より本体端子53が多少下方にある場合は、挿入操作の初期においてまず上側の引出接触子56の枠側接触縁56cが枠端子51の上側の傾斜面51a上を摺動し始める。このとき上側の引出接触子56は左方向へ付勢されるため軸保持板2が取付部を中心として反時計方向へ回転する。続いて下側の引出接触子56の枠側接触縁56cが枠端子51の下側の傾斜面51a上を摺動し始め、軸保持板2に時計方向へ回転させる力が作用する。しかし、反時計方向への回転力の方が強いため軸保持板2は反時計方向へ回転する。すなわち、本体端子53上で上側の引出接触子56は左方向へ変位し下側の引出接触子56は右側へ変位し、図3に示されているごとく、挿入操作が完了したときは軸保持板2が回転した状態で枠端子51と本体端子53が接続される。このような接続状態であっても上下の引出接触子56が共に変位しているため十分な接触余裕が維持される。なお、引出接触子56の本体側接触縁56b及び軸湾曲阻止部材3の接触縁3aもともに弧状に形成されているため、軸保持板2及び軸湾曲阻止部材3が円滑に回転しこの動作は円滑に行われる。
【0014】
上記に、本発明の実施の形態について説明を行ったが、上記に開示された本発明の実施の形態は、あくまでも例示であって、本発明の範囲は上記の発明の実施の形態に限定されるものではない。本発明の範囲は、特許請求の範囲の記載によって示され、さらに特許請求の範囲の記載と均等の意味および範囲内でのすべての変更を含むことが意図される。
【0015】
【発明の効果】
本発明は、以上説明した形態で実施され、端子の表側及び裏側に対向するように引出接触子を備えたブリッジ形引出接触子装置を有する引出型回路遮断器において、引出接触子を保持する接触子軸に保持され端子の端面との弧状の接触縁を有する軸湾曲阻止部材を備えるとともに、軸保持部材を回転自在に装着するようにしたため、枠端子と本体端子が上下方向にずれている場合であっても引出接触子が確実に枠端子及び本体端子と接触し、その結果、部品寸法のばらつきや組立のばらつきをきびしく管理する必要のない、製造が簡単で品質の安定した引出型回路遮断器を提供できるという効果を奏する。
【図面の簡単な説明】
【図1】本発明による実施例の引出型回路遮断器の引出接触子装置が断路状態にあるときの平面図であって一部が破断された図である。
【図2】図1の引出型回路遮断器の挿入操作において引出接触子装置が枠端子と接触した瞬間のY−Yから見た側面断面図である。
【図3】図2の枠端子と本体端子が上下方向にずれている場合の挿入操作が完了した状態を示す説明図である。
【図4】従来の引出型回路遮断器の挿入状態示す側面図である。
【図5】図4の引出型回路遮断器の断路状態を示す図である。
【図6】図4の引出型回路遮断器の引出接触子装置が断路状態にあるときの平面図である。
【図7】図6の引出型回路遮断器の挿入操作において引出接触子装置が枠端子と接触した瞬間のX−Xから見た側面断面図である。
【符号の説明】
1 引出接触子装置、2 軸保持板、2a 連結部、3 軸湾曲阻止部材、3a接触縁、51 枠端子、51a 傾斜面、51b 平面部分、52 引出枠、53 本体端子、 54 遮断器本体、56 引出接触子、56b 本体側接触縁、56c 枠側接触縁、57 接触子軸、60 接触子ばね
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drawer contact device for connecting and disconnecting a circuit breaker body and a drawer frame of a drawer type circuit breaker.
[0002]
[Prior art]
A conventional pull-out type circuit breaker is shown in FIGS. This drawer type circuit breaker comprises a drawer frame 52 having a frame terminal 51 and a breaker body 54 having a body terminal 53 and moving in the drawer frame. A bridge-type drawer contact device 55 is attached to the body terminal 53, and when the circuit breaker body 54 and the drawer frame 52 are in a connected state as shown in FIG. Is in contact with the frame terminal 51. Further, as shown in FIG. 5, when the circuit breaker body 54 and the drawer frame 52 are in the disconnected state, the drawer contact device 55 and the frame terminal 51 are separated. That is, the main body terminal 53 is one terminal described in the claims, and the frame terminal 51 is the other terminal. Unlike this drawer-type circuit breaker, there is a frame terminal in which a drawer contact device is mounted. In this case, the frame terminal serves as one terminal and the main body terminal serves as the other terminal.
[0003]
6 and 7, the drawer contact device 55 includes a plurality of pieces of drawer contacts 56 that come into contact with the upper and lower surfaces of the frame terminal 51 and the main body terminal 53, respectively. The drawer contacts 56 are opposed to each other. In addition, the upper surface and lower surface of a terminal are equivalent to the front and back described in the claim. The pull-out contact 56 is rotatably held by a contact shaft 57 that is inserted into a long hole 56a that is formed in one end of the drawer contact 56 and that is long in the vertical direction. The shaft holding plate 58 is formed to have a U-shaped cross section and is attached to the side surface portion of the main body terminal 53 at both arms, and the contact shaft 57 is held at both arms of the shaft holding plate 58. .
[0004]
Between a pair of upper and lower shafts 59 mounted between a pair of adjacent pulling contacts 56, a pair of lower adjacent pulling contacts 56 facing the upper pair of adjacent pulling contacts 56 is taken as a set. A contact spring 60 is provided, and the contact spring 60 biases the drawer contact 56 so that the upper and lower facing distances thereof are narrowed. The drawer contact 56 has a main body side contact edge 56b and a frame side contact edge 56c both formed in an arc shape, the main body side contact edge 56b is always in contact with the main body terminal 53, and the upper and lower frame side contact edges 56c are disconnected. Are opposed to each other with a predetermined gap G1. The facing gap G1 is formed by pressing the drawing contact 56 against the upper and lower edges of the connecting portion 58a that connects both arms of the shaft holding plate 58. Since the facing gap G1 is set to a value smaller than the thickness G2 of the frame terminal 51, a gap is formed between the connecting portion 58a of the shaft holding plate 58 and the drawing contact 56 after the insertion is completed. Has been. However, if this gap is too small, the frame-side contact edge 56c and the frame terminal 51 may be worn and the gap may be lost. In this case, the drawer contact 56 and the frame terminal 51 are not in contact with each other. The width dimension of the connecting portion 58a that connects the two arms of the shaft holding plate 58 is determined so that a corresponding difference can be made between them.
[0005]
When the drawer type circuit breaker is inserted, the frame-side contact edge 56c of the drawer contact 56 comes into contact with the inclined surface 51a at the tip of the frame terminal 51, and the upper and lower drawer contacts 56 are moved. It slides on the inclined surface 51 a while widening the facing interval and reaches the flat portion 51 b of the frame terminal 51. In this operation, when the frame side contact edge 56c slides on the inclined surface 51a, the component force FA in the contact axial direction of the reaction force F of the contact spring 60 is shown by the chain line in FIG. It acts to bend the contact shaft 57 as it is. If this bending occurs, the drawer contact 56 near the center is displaced leftward and the frame side contact edge 56c does not reach the flat portion 51b of the frame terminal 51, so that the connection is incomplete. In order to prevent this, a stopper 61 is provided on the main body terminal 53 to prevent leftward displacement of the drawing contact 56.
[0006]
[Problems to be solved by the invention]
In such a conventional drawer type circuit breaker, when the vertical position of the frame terminal 51 and the main body terminal 53 is displaced, either the upper or lower drawing contact 56 and the frame terminal 51 are arranged. There is a problem that the contact with the component becomes incomplete, and there is a problem that it is necessary to strictly manage the variation of the component dimensions and the variation of the assembly.
[0007]
Accordingly, the present invention provides a drawer type circuit breaker having a drawer contact device that is easy to manufacture and stable in quality, which can provide reliable contact even if the vertical and vertical positions of the main body terminal and the frame terminal are slightly shifted. There is.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a drawer frame having a terminal, a breaker body movable within the drawer frame, and a terminal attached to any one of the drawer frame and the breaker body. It has a bridge-type drawer contact device that connects and disconnects one terminal and the other terminal, and the drawer contact device is a plurality of pieces of drawer contacts arranged to face each other on the front side and the back side of both terminals. A pair of contactor shafts for rotatably holding the front and back side pull-out contactors, a shaft holding member for holding the contactor shafts, and a contactor spring that acts in a direction to reduce the facing distance between the pullout contactors In the drawer type circuit breaker provided, the shaft holding member has a U-shaped cross section and is rotatably mounted on both side surfaces of the mounting side terminal on both arms, and one on each of the front and back contact shafts. And the other arm Is set to be held with the shaft bending preventing member arcuate contact edge is formed in contact with the end surface of the moving direction of the mounting terminal to the connecting portion connecting the arms to.
[0009]
With such a configuration, even when the reaction force of the contact spring acts on the contact shaft during the insertion operation, the shaft bending prevention member held on the contact shaft contacts the end surface of the terminal to prevent the shaft from bending. To do. In addition, when the frame terminal and the main body terminal are displaced in the vertical direction, the rotational force is applied to the shaft holding member in the direction in which one of the contactor shafts approaches the end surface of the terminal while the other contactor shaft moves away during the insertion operation. Works. At this time, since the contact edge of the shaft bending holding member in contact with the end surface is arcuate, the shaft holding member rotates smoothly, and both the drawing contactors facing each other reliably come into contact with both terminals.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the drawer-type circuits breaker according to the present invention will be described in the embodiment shown in FIGS. Since this embodiment is the same as the circuit breaker described in the prior art in most respects, the same parts are denoted by the same reference numerals and only different points will be described here. That is, the difference is in the configuration of the drawer contact device, and the drawer contact device 1 according to the present embodiment has a shaft holding equivalent to the shaft holding plate 58 of the prior art compared to the conventional drawer contact device 55. The point is that the plate 2 is rotatably mounted and the shaft bending preventing member 3 that prevents the contactor shaft 57 from bending during the insertion operation is provided.
[0011]
The shaft holding plate 2 is rotatably attached to the main body terminal 53 by a screw 5 via a bush 4, and the opposing distance G1 of the frame side contact edge 56 c of the drawer contact 56 connects the both arms of the shaft holding plate 2. The upper and lower drawer contacts 56 are engaged with the upper and lower edges of the connecting portion 2a. Further, the shaft bending prevention member 3 is mounted in a gap between adjacent drawing contactors 56 and not having the contactor spring 60 attached thereto. The shaft bending prevention member 3 is a substantially U-shaped metal plate, and is held by the upper and lower contact shafts 57 in the holes formed in the end portions of one and the other arms to connect the two arms. An arcuate contact edge 3a is formed inside the connecting portion.
[0012]
In the insertion operation of the drawer type circuit breaker of the embodiment configured as described above, when the frame side contact edge 56c slides on the inclined surface 51a of the frame terminal 51, the reaction force of the contact spring 60 is applied to the contact shaft. Along with 57, the shaft bending prevention member 3 is urged to the left. However, since the contact edge 3a of the shaft bending prevention member 3 is in contact with the end surface 53a of the main body terminal 53 and the shaft bending prevention member 3 is not displaced, the contact shaft 57 is prevented from bending.
[0013]
Next, with reference to FIG. 3, the operation | movement at the time of insertion operation in case the drawer type circuit breaker of this embodiment is assembled with the vertical positions of the frame terminal 51 and the main body terminal 53 shifted will be described. For example, when the main body terminal 53 is slightly below the frame terminal 51, the frame-side contact edge 56c of the upper drawing contact 56 begins to slide on the upper inclined surface 51a of the frame terminal 51 in the initial stage of the insertion operation. . At this time, since the upper drawing contact 56 is urged to the left, the shaft holding plate 2 rotates counterclockwise around the mounting portion. Subsequently, the frame side contact edge 56c of the lower drawing contact 56 starts to slide on the lower inclined surface 51a of the frame terminal 51, and a force to rotate the shaft holding plate 2 in the clockwise direction acts. However, since the counterclockwise rotational force is stronger, the shaft holding plate 2 rotates counterclockwise. That is, on the main body terminal 53, the upper drawing contact 56 is displaced to the left and the lower drawing contact 56 is displaced to the right. As shown in FIG. 3, the shaft is held when the insertion operation is completed. The frame terminal 51 and the main body terminal 53 are connected while the plate 2 is rotated. Even in such a connected state, the upper and lower drawer contacts 56 are both displaced, so that a sufficient contact margin is maintained. Since the main body side contact edge 56b of the drawer contact 56 and the contact edge 3a of the shaft bending prevention member 3 are both formed in an arc shape, the shaft holding plate 2 and the shaft bending prevention member 3 rotate smoothly and this operation is performed. It is done smoothly.
[0014]
Although the embodiment of the present invention has been described above, the embodiment of the present invention disclosed above is merely an example, and the scope of the present invention is limited to the embodiment of the above invention. It is not something. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.
[0015]
【The invention's effect】
The present invention is implemented in the form described above, and in a drawer-type circuit breaker having a bridge-type drawer contact device provided with a drawer contact so as to face the front side and the back side of a terminal, the contact holding the drawer contact When the frame terminal and the main body terminal are displaced in the vertical direction because the shaft bending prevention member is held on the slave shaft and has an arc-shaped contact edge having an arcuate contact edge with the end face of the terminal. Even so, the drawer contact makes reliable contact with the frame terminal and the main body terminal, and as a result, it is not necessary to strictly manage the variations in component dimensions and assembly, and it is easy to manufacture and has a stable quality. The effect that it can provide a vessel is produced.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a plan view of a drawer type circuit breaker according to an embodiment of the present invention when the drawer contact device is in a disconnected state and is a partially broken view.
2 is a side cross-sectional view as seen from YY at the moment when the drawer contact device contacts the frame terminal in the insertion operation of the drawer-type circuit breaker of FIG. 1. FIG.
FIG. 3 is an explanatory view showing a state in which the insertion operation is completed when the frame terminal and the main body terminal of FIG. 2 are displaced in the vertical direction.
FIG. 4 is a side view showing an insertion state of a conventional pull-out type circuit breaker.
FIG. 5 is a diagram showing a disconnection state of the drawer-type circuit breaker of FIG. 4;
6 is a plan view of the drawer-type circuit breaker of FIG. 4 when the drawer contact device is in a disconnected state. FIG.
7 is a side cross-sectional view seen from XX at the moment when the drawer contact device contacts the frame terminal in the insertion operation of the drawer-type circuit breaker of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pull-out contact device, 2 axis | shaft holding plate, 2a connection part, 3 axis | shaft curve prevention member, 3a contact edge, 51 frame terminal, 51a inclined surface, 51b plane part, 52 drawer frame, 53 body terminal, 54 circuit breaker body, 56 drawer contact, 56b body side contact edge, 56c frame side contact edge, 57 contact axis, 60 contact spring

Claims (1)

いずれも端子(51,53)を備えた引出枠(52)及び前記引出枠(52)内を移動自在の遮断器本体(54)、並びに前記引出枠(52)及び前記遮断器本体(54)のいずれか一方の端子に装着され該一方の端子と他方の端子とを接続及び断路させるブリッジ形引出接触子装置(1)を有し、
前記引出接触子装置(1)は、前記両端子(51,53)のそれぞれ表側及び裏側で接触するように対向配置された複数片の引出接触子(56)と、表側及び裏側の前記引出接触子(56)を回転自在に保持する一対の接触子軸(57)と、前記接触子軸(57)を保持する軸保持部材(2)と、前記引出接触子(56)の対向間隔を狭める方向に作用する接触子ばね(60)を備えた引出型回路遮断器において、
前記軸保持部材(2)は断面がコ字状であってその両腕において前記装着側端子の両側面に回転自在に装着されるとともに、表側及び裏側の前記接触子軸(57)にそれぞれ一方及び他方の腕が回転自在に保持され両腕をつなぐ連結部に前記装着側端子の移動方向の端面と接触する弧状の接触縁(3a)が形成された軸湾曲阻止部材(3)を備えたことを特徴とする引出型回路遮断器。
Cradle both provided with a pin (51, 53) (52) and freely breaker body moving said lead frame (52) in (54), and said lead frame (52) and said breaker body (54) A bridge-type lead-out contact device (1) that is attached to any one of the terminals and connects and disconnects the one terminal and the other terminal;
The pull-out contact device (1) includes a plurality of pull-out contact members (56) disposed to face each other on the front side and the back side of the terminals (51, 53) , and the pull-out contact on the front side and the back side. A pair of contactor shafts (57 ) for rotatably holding the child (56) , a shaft holding member (2) for holding the contactor shaft (57) , and a spacing between the drawing contactors (56) are reduced. In a drawer type circuit breaker with a contact spring (60) acting in the direction,
The shaft holding member (2) has a U-shaped cross section and is rotatably mounted on both side surfaces of the mounting-side terminal in both arms, and one on each of the front and back contact shafts (57). and with the other arm is rotatably held by arcuate contact edge (3a) shaft bending preventing member is formed in contact with the end surface of the moving direction of the mounting terminal to the connecting portion connecting the arms (3) A draw-out type circuit breaker characterized by that.
JP2001299090A 2001-09-28 2001-09-28 Pull-out type circuit breaker Expired - Fee Related JP4237431B2 (en)

Priority Applications (1)

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JP2001299090A JP4237431B2 (en) 2001-09-28 2001-09-28 Pull-out type circuit breaker

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CN103065834A (en) * 2012-12-18 2013-04-24 天津市百利电气有限公司 Disconnecting switch of arch contacts with high breaking capacity
CN103578877B (en) * 2013-11-08 2015-09-23 沈阳工业大学 Ultrahigh speed mechanical switch

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