JP2000340076A - Electrode connection terminal and breaker provided with it - Google Patents
Electrode connection terminal and breaker provided with itInfo
- Publication number
- JP2000340076A JP2000340076A JP11143735A JP14373599A JP2000340076A JP 2000340076 A JP2000340076 A JP 2000340076A JP 11143735 A JP11143735 A JP 11143735A JP 14373599 A JP14373599 A JP 14373599A JP 2000340076 A JP2000340076 A JP 2000340076A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- pin
- screw
- electrode
- split
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/6606—Terminal arrangements
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、大電流用遮断器に
組み込まれる真空バルブの電極に固定される電極接続端
子及び該電極接続端子を取付けた遮断器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode connection terminal fixed to an electrode of a vacuum valve incorporated in a large current circuit breaker, and a circuit breaker to which the electrode connection terminal is attached.
【０００２】[0002]
【従来の技術】真空遮断器は、１０-6Torr程度に調整さ
れた真空容器内に固定電極棒及び可動電極棒を配置し、
これらを真空容器外の導体に接続しており、可動電極棒
の進退動作により両電極棒の接点を接離させて主回路電
流を通流，遮断する構成となっている。これらの電極棒
には端子が固定されており、この端子は真空容器外の導
体に接続される。図４は従来の電極接続端子の構造を示
す断面図である。銅合金製の割り型端子２１は、略中央
に真空バルブの電極棒２を嵌入せしめる嵌め孔と、嵌め
孔に連なって中央から端縁側へ延びる割り部２１ｄと、
割り部２１ｄの両側領域に設けられたボルト孔２１ｃと
を備える。ボルト孔２１ｃは、割り部２１ｄを通って割
り型端子２１の両端面に貫通する態様で設けられてい
る。割り型端子２１は、嵌め孔に電極棒２を嵌め入れ、
ボルト孔２１ｃにボルト２４を割り部２１ｄを貫く態様
で挿通せしめ、ナット２５で締結することにより電極棒
２に固定されている。2. Description of the Related Art In a vacuum circuit breaker, a fixed electrode rod and a movable electrode rod are arranged in a vacuum vessel adjusted to about 10 -6 Torr,
These are connected to a conductor outside the vacuum vessel, and the structure is such that the contacts of both electrode rods are brought into contact with and separated from each other by the reciprocating operation of the movable electrode rods, and the main circuit current flows and cuts off. Terminals are fixed to these electrode rods, and the terminals are connected to conductors outside the vacuum vessel. FIG. 4 is a sectional view showing the structure of a conventional electrode connection terminal. The split terminal 21 made of a copper alloy has a fitting hole in which the electrode rod 2 of the vacuum valve is fitted substantially in the center, a split portion 21 d extending from the center to the edge side in connection with the fitting hole,
And a bolt hole 21c provided on both sides of the split portion 21d. The bolt holes 21c are provided so as to penetrate through both ends of the split terminal 21 through the split portion 21d. The split terminal 21 fits the electrode rod 2 into the fitting hole,
The bolt 24 is inserted into the bolt hole 21c in a manner penetrating the split portion 21d, and is fixed to the electrode rod 2 by fastening with a nut 25.
【０００３】また、図５は従来の他の電極接続端子の構
造を示す平面図であり、実公昭49−2841号公報にて提案
された真空バルブの取付け装置である。外部接続端子５
は可撓性導体６を介して割り型端子３１に接続され、割
り型端子３１は電極棒（可動）２に固定されている。割
り型端子３１は銅合金で形成されており、割り部３１ａ
の両側には割り部３１ａを貫く態様で螺子穴が形成さ
れ、該螺子穴の内周部に螺子溝が刻まれている。ボルト
３４が螺子穴に挿入されて螺合し、割り部３１ａが締結
されて割り型端子３１が電極棒２に固定されるようにな
っている。FIG. 5 is a plan view showing the structure of another conventional electrode connection terminal, which is a vacuum valve mounting device proposed in Japanese Utility Model Publication No. 49-2841. External connection terminal 5
Is connected to the split terminal 31 via the flexible conductor 6, and the split terminal 31 is fixed to the electrode rod (movable) 2. The split terminal 31 is formed of a copper alloy and has a split portion 31a.
A screw hole is formed on both sides of the screw hole so as to penetrate the split portion 31a, and a screw groove is formed in an inner peripheral portion of the screw hole. The bolt 34 is inserted into the screw hole and screwed together, and the split portion 31a is fastened to fix the split terminal 31 to the electrode rod 2.
【０００４】[0004]
【発明が解決しようとする課題】このような電極接続端
子を取付けた大電流用遮断器は、可動電極棒の進退動作
により電路を開閉する。そのために、数千回の連続開閉
後に、割り型端子を締結しているボルトに緩みが生じ、
電極と割り型端子との間の接触抵抗が増大するという問
題があった。また、大電流を遮断するために割り型端子
は大型化されつつあり、これに伴い可動部分の質量・運
動エネルギが増大し、開閉動作時の衝撃エネルギ及び減
衰振動が大きくなって、ボルトがさらに緩み易くなると
いう問題があった。The circuit breaker for large currents to which such an electrode connection terminal is mounted opens and closes an electric circuit by moving the movable electrode rod forward and backward. Therefore, after thousands of times of continuous opening and closing, the bolts fastening the split terminals are loosened,
There is a problem that the contact resistance between the electrode and the split terminal increases. In addition, split type terminals are being enlarged in order to cut off large currents, and the mass and kinetic energy of the movable parts increase with this, and the impact energy and damping vibration at the time of opening and closing operations increase, which further increases the bolts. There was a problem that it became easy to loosen.
【０００５】遮断器の構造を大幅に変更することなく、
上述したような数千回の連続開閉によるボルトの緩みを
防止するためには、ボルトの締結力を増大させれば良
い。しかしながら、ボルトの緩みに起因する接触抵抗の
増大を防止するためには、通常の１．８倍の締結トルク
が必要である。図５で示した実公昭49−2841号公報に代
表される通常の割り型端子３１は銅合金で形成されてお
り、高トルクでの締結により、螺子穴の螺子溝が破壊さ
れてしまうという問題があった。[0005] Without significantly changing the structure of the circuit breaker,
In order to prevent the bolt from being loosened due to the continuous opening and closing of thousands of times as described above, the fastening force of the bolt may be increased. However, in order to prevent the contact resistance from increasing due to the loosening of the bolt, a fastening torque that is 1.8 times the normal fastening torque is required. The normal split terminal 31 typified by Japanese Utility Model Publication No. 49-2841 shown in FIG. 5 is formed of a copper alloy, and the screw groove of the screw hole is broken by fastening with high torque. was there.
【０００６】また、図４に示したタイプの割り型端子２
１は、ボルト２４の頭部及びナット２５が割り型端子２
１の端面から露出しているので、締結時にその周囲に工
具スペースが必要となり、例えば端子の周縁部分に放熱
用のフィンを設ける場合に、フィンの取付けスペースが
減少するという問題があった。A split terminal 2 of the type shown in FIG.
1 is a split terminal 2 with a bolt 24 head and a nut 25
Since it is exposed from the end face of the terminal 1, a tool space is required around the terminal at the time of fastening. For example, when fins for heat radiation are provided on the peripheral portion of the terminal, there is a problem that the space for mounting the fins is reduced.
【０００７】本発明は、かかる事情に鑑みてなされたも
のであり、割り型端子よりも強度が高い材質のピンに締
結螺子を螺合させて割り型端子を締結することにより、
高い締結トルクで割り型端子を電極に固定でき、締結螺
子の緩みを防止する電極接続端子及びそれを備える遮断
器を提供することを目的とする。また、締結螺子が螺合
する螺子溝を内部に設けることにより、締結時の工具ス
ペースを小さくできる電極接続端子及びそれを備える遮
断器を提供することを目的とする。[0007] The present invention has been made in view of the above circumstances, and by fastening a split terminal by screwing a fastening screw to a pin made of a material having higher strength than the split terminal,
An object of the present invention is to provide an electrode connection terminal that can fix a split terminal to an electrode with a high fastening torque and prevents loosening of a fastening screw, and a circuit breaker including the same. Another object of the present invention is to provide an electrode connection terminal capable of reducing a tool space at the time of fastening by providing a screw groove into which a fastening screw is screwed, and a circuit breaker including the same.
【０００８】[0008]
【課題を解決するための手段】第１発明に係る電極接続
端子は、電極を挿嵌する嵌め孔と、該嵌め孔に連なる割
り部と、該割り部の両側に設けられ、該割り部を貫いて
締結螺子を挿通せしめる挿通穴と、軸方向を交えて前記
挿通穴に連通され、胴部に螺子穴を有するピンを挿入す
べきピン穴とを備えることを特徴とする。An electrode connecting terminal according to a first aspect of the present invention is provided with a fitting hole for inserting an electrode, a split portion connected to the fitting hole, and provided on both sides of the split portion. It is characterized by comprising an insertion hole through which a fastening screw is inserted, and a pin hole which is communicated with the insertion hole in an axial direction and into which a pin having a screw hole in the body is to be inserted.
【０００９】第２発明に係る電極接続端子は、第１発明
において、少なくとも挿通穴の近傍に、放熱用のフィン
をさらに備えることを特徴とする。According to a second aspect of the present invention, in the electrode connection terminal according to the first aspect, a heat radiation fin is further provided at least in the vicinity of the insertion hole.
【００１０】第３発明に係る遮断器は、真空容器内に配
され、その相対的移動により電気的に接続／遮断される
一対の電極と、少なくとも該電極の一方に固定される１
又は複数の電極接続端子と、該電極接続端子を前記電極
に固定するための螺子部材とを備え、該電極接続端子
は、前記電極を挿嵌する嵌め孔と、該嵌め孔に連なる割
り部と、該割り部の両側に設けられ、該割り部を貫いて
締結螺子を挿通せしめる挿通穴と、軸方向を交えて前記
挿通穴に連通されたピン穴とを有しており、前記螺子部
材は、胴部に螺子穴を有し、前記ピン穴に挿入されたピ
ンと、該ピンの螺子穴に螺合された前記締結螺子とで構
成してあることを特徴とする。A circuit breaker according to a third aspect of the present invention is provided in a vacuum vessel, and a pair of electrodes electrically connected / disconnected by relative movement thereof, and at least one of the electrodes fixed to one of the electrodes.
Or a plurality of electrode connection terminals, comprising a screw member for fixing the electrode connection terminal to the electrode, the electrode connection terminal, a fitting hole for inserting the electrode, a split portion connected to the fitting hole, , Provided on both sides of the split portion, has an insertion hole through which the fastening screw is inserted, and a pin hole communicated with the insertion hole in the axial direction, the screw member is The body has a screw hole, and is constituted by a pin inserted into the pin hole and the fastening screw screwed into the screw hole of the pin.
【００１１】第４発明に係る遮断器は、第３発明におい
て、ピンは、電極接続端子よりも高い強度を有する材料
を用いて形成してあることを特徴とする。A circuit breaker according to a fourth invention is characterized in that, in the third invention, the pins are formed using a material having higher strength than the electrode connection terminals.
【００１２】第５発明に係る遮断器は、第３又は第４発
明において、ピンはステンレス鋼製であり、電極接続端
子は銅合金製であることを特徴とする。A circuit breaker according to a fifth invention is characterized in that, in the third or fourth invention, the pins are made of stainless steel and the electrode connection terminals are made of a copper alloy.
【００１３】[0013]
【発明の実施の形態】以下、本発明をその実施の形態を
示す図面に基づき具体的に説明する。図１は本実施の形
態の電極接続端子の構造を示す横断面図であり、図２は
図１の電極接続端子を取付けた遮断器の主要部を示す縦
断面図である。図２に示すように、遮断器は真空容器７
と、真空容器７を貫通して真空容器７内に同軸上に配置
される可動電極棒２及び固定電極棒２０とを備えてい
る。可動電極棒２及び固定電極棒２０には夫々、電極接
続端子である割り型端子１，１０が固定されている。割
り型端子１，１０はこれに接続された図示しない可撓性
導体を介して真空容器７外の導体（図示せず）に接続さ
れている。このような遮断器は、可動電極棒２を進退さ
せることにより可動電極棒２及び固定電極棒２０の対向
端面を接離せしめ、主回路電流を通流，遮断するように
なっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a transverse sectional view showing the structure of the electrode connecting terminal of the present embodiment, and FIG. 2 is a longitudinal sectional view showing a main part of a circuit breaker to which the electrode connecting terminal of FIG. 1 is attached. As shown in FIG.
And a movable electrode rod 2 and a fixed electrode rod 20 which penetrate through the vacuum vessel 7 and are arranged coaxially in the vacuum vessel 7. Split-type terminals 1 and 10, which are electrode connection terminals, are fixed to the movable electrode rod 2 and the fixed electrode rod 20, respectively. The split terminals 1 and 10 are connected to a conductor (not shown) outside the vacuum vessel 7 via a flexible conductor (not shown) connected thereto. In such a circuit breaker, by moving the movable electrode rod 2 forward and backward, the opposed end faces of the movable electrode rod 2 and the fixed electrode rod 20 are brought into contact with or separated from each other, so that the main circuit current flows and cuts off.
【００１４】図１は可動電極棒（以下、電極棒という）
２側に固定された割り型端子１を示している。固定電極
棒２０に固定された割り型端子１０も同様の構造を有し
ており、その説明を省略する。図１に示すように、銅合
金製の割り型端子１は略矩形板状であり、略中央に電極
棒２を嵌入するための嵌め孔２ａを有し、嵌め孔２ａに
連なって周縁側へ延びる割り部１ａを有している。割り
部１ａの両側領域には割り部１ａを貫く態様でボルト穴
１ｃが設けられ、その開口部分は底部側よりも大径に形
成してあり、挿入すべきボルト４の頭部がボルト穴１ｃ
内に埋め込まれるようになっている。またボルト穴１ｃ
の底部には、本発明の特徴となるピン穴１ｂが連通され
ており、ピン穴１ｂは軸方向が電極棒２と略平行であ
り、即ち、ピン穴１ｂとボルト穴１ｃとは軸方向が互い
に略直交している。FIG. 1 shows a movable electrode rod (hereinafter referred to as an electrode rod).
The split terminal 1 fixed to two sides is shown. The split terminal 10 fixed to the fixed electrode rod 20 has the same structure, and a description thereof will be omitted. As shown in FIG. 1, a split terminal 1 made of a copper alloy has a substantially rectangular plate shape, and has a fitting hole 2 a for fitting an electrode rod 2 at substantially the center, and is connected to the fitting hole 2 a to a peripheral side. It has a split part 1a that extends. Bolt holes 1c are provided in both sides of the split portion 1a so as to penetrate the split portion 1a, and the opening portion is formed to have a larger diameter than the bottom side.
It is designed to be embedded inside. Bolt hole 1c
A pin hole 1b, which is a feature of the present invention, is communicated with the bottom of the electrode hole 2. The pin hole 1b has an axial direction substantially parallel to the electrode rod 2, that is, the pin hole 1b and the bolt hole 1c have an axial direction. They are substantially orthogonal to each other.
【００１５】ピン穴１ｂには、ステンレス鋼製の孔付き
ピン３が挿嵌されている。図３は図１の割り型端子を電
極棒２に固定するための螺子部材を示す斜視図であり、
孔付きピン３及びボルト４の螺合状態を示している。孔
付きピン３は胴部分に直交して貫通する螺子孔３ａを有
しており、螺子孔３ａの内周に刻まれた螺子溝（雌ね
じ）は、ボルト４の外周の螺子溝（雄ねじ）と螺合する
寸法を有している。孔付きピン３は螺子孔３ａの軸方向
がボルト穴１ｃ（図１参照）の軸方向と一致する向きに
挿嵌されており、ボルト４がボルト穴１ｃに挿通されて
螺子孔３ａの途中まで螺子嵌めされている。なお、螺子
孔３ａは貫通孔に限らず、底面を有する螺子穴であって
も良い。A pin 3 with a hole made of stainless steel is inserted into the pin hole 1b. FIG. 3 is a perspective view showing a screw member for fixing the split terminal of FIG. 1 to the electrode rod 2,
3 shows a threaded state of the pin 3 with a hole and the bolt 4. The pin 3 with a hole has a screw hole 3a penetrating at right angles to the trunk portion. A screw groove (female screw) carved on the inner periphery of the screw hole 3a is different from a screw groove (male screw) on the outer periphery of the bolt 4. It has dimensions to be screwed. The pin 3 with a hole is inserted so that the axial direction of the screw hole 3a coincides with the axial direction of the bolt hole 1c (see FIG. 1), and the bolt 4 is inserted through the bolt hole 1c to reach the middle of the screw hole 3a. It is screwed. The screw hole 3a is not limited to a through hole, and may be a screw hole having a bottom surface.
【００１６】割り型端子１の周端には放熱用のフィン
８，８…が設けられており、特に、ボルト穴１ｃ及びピ
ン穴１ｂの周辺には多数のフィン８が形成されている。
ボルト４に螺合される螺子孔３ａを有する孔付きピン３
は、割り型端子１の内部に装入されているので、ボルト
４の締結時はボルト４の頭部に工具を装着するだけであ
る。従って、螺子孔３ａの周辺に工具のためのスペース
を確保する必要はなく、その領域にフィン８を設けるこ
とができる。.. Are provided on the peripheral end of the split terminal 1. In particular, a large number of fins 8 are formed around the bolt hole 1c and the pin hole 1b.
Pin 3 having a screw hole 3a screwed to a bolt 4
Is mounted inside the split terminal 1, so that when the bolt 4 is fastened, a tool is simply mounted on the head of the bolt 4. Therefore, it is not necessary to secure a space for the tool around the screw hole 3a, and the fin 8 can be provided in that area.
【００１７】以上の如き構成の割り型端子１は、ステン
レス鋼製の孔付きピン３が有する螺子孔３ａに、ボルト
４を螺合させて締結するので、銅合金製の割り型端子１
を高い締結トルクで電極棒２に締結した場合でも螺子溝
が破壊されることがなく、ボルト４の緩みに起因する接
触抵抗の増大を防止することができる。また、上述した
如く、締結時の工具に必要なスペースを少なくでき、そ
の領域に放熱用のフィンを設けることができるので、放
熱効率が高まる。In the split terminal 1 having the above-described structure, the bolt 4 is screwed into the screw hole 3a of the pin 3 made of stainless steel and fastened.
Even when is fastened to the electrode rod 2 with a high fastening torque, the screw groove is not destroyed, and an increase in contact resistance due to the loosening of the bolt 4 can be prevented. Further, as described above, the space required for the tool at the time of fastening can be reduced, and the fins for heat radiation can be provided in that area, so that the heat radiation efficiency increases.
【００１８】なお、上述した割り型端子１はその周端に
フィン８を設けた形状を説明しているが、これに限るも
のではなく、フィンを設けていない形状であっても、ボ
ルト４の緩みに起因する接触抵抗の増大を防止すること
ができる。Although the above-described split terminal 1 has been described as having a shape in which fins 8 are provided at its peripheral end, the present invention is not limited to this. An increase in contact resistance due to loosening can be prevented.
【００１９】また、上述した割り型端子１に装入された
孔付きピン３は、ステンレス鋼製の場合を説明している
が、これに限るものではなく、割り型端子１の材質より
も強度が高い材質で形成してあれば良い。さらに、上述
したピン穴１ｂはボルト穴１ｃに垂直に交わる方向に形
成した場合を説明しているが、これに限るものではな
く、ボルト４が螺合できる向きに孔付きピン３が装入で
きれば良い。さらにまた、上述した孔付きピン３の螺子
孔３ａは貫通孔である場合を説明しているが、これに限
るものではなく、底部を有する螺子穴であっても良い。The case where the pin 3 with a hole inserted into the split terminal 1 is made of stainless steel is described. However, the present invention is not limited to this, and the pin 3 is stronger than the material of the split terminal 1. Should be formed of a material having a high value. Furthermore, the case where the above-described pin hole 1b is formed in a direction perpendicular to the bolt hole 1c is described, but the present invention is not limited to this, as long as the pin 3 with holes can be inserted in a direction in which the bolt 4 can be screwed. good. Furthermore, although the case where the screw hole 3a of the pin 3 with a hole described above is a through hole is described, the present invention is not limited to this, and a screw hole having a bottom may be used.
【００２０】さらに、上述した割り型端子１は真空容器
７の外側に固定された場合を説明しているが、これに限
るものではなく、真空容器７内で固定されてあっても良
い。Further, the case where the split terminal 1 is fixed outside the vacuum vessel 7 has been described. However, the present invention is not limited to this, and the split terminal 1 may be fixed inside the vacuum vessel 7.
【００２１】さらにまた、上述した割り型端子１は１つ
の割り部１ａを有する場合を説明しているが、これに限
るものではなく、複数の割り部を有していても良い。こ
の場合、孔付きピン３及びボルト４は割り部の個数に応
じて用いられる。Furthermore, the case where the above-mentioned split terminal 1 has one split portion 1a has been described, but the present invention is not limited to this, and it may have a plurality of split portions. In this case, the pins 3 with holes and the bolts 4 are used in accordance with the number of split portions.
【００２２】[0022]
【発明の効果】以上、詳述した如く、第１発明によれ
ば、締結螺子を通す挿通穴に連通してピン穴を設けてい
るので、このピン穴に電極接続端子とは別材質のピンを
装入することができる。ピンの胴部には螺子溝が刻まれ
た螺子穴を設けており、この螺子穴に締結螺子を螺合さ
せるので、ピンを電極接続端子よりも高強度な材質で形
成した場合は高い締結トルクで締結螺子を締めても螺子
溝が破壊されることはない。従って、ボルトの緩みに起
因する接触抵抗の増大を防止することができる。As described in detail above, according to the first aspect, since the pin hole is provided in communication with the insertion hole through which the fastening screw is passed, the pin hole is made of a different material from the electrode connection terminal. Can be charged. The body of the pin is provided with a screw hole with a thread groove, and the fastening screw is screwed into this screw hole. If the pin is made of a material that is stronger than the electrode connection terminal, a high fastening torque is used. Even when the fastening screw is tightened, the screw groove is not broken. Therefore, it is possible to prevent the contact resistance from increasing due to the loosening of the bolt.
【００２３】第２発明によれば、締結螺子に螺合する螺
子溝を電極接続端子の内部に装入しているので、締結時
の螺子溝側の工具スペースは必要なく、放熱用のフィン
を取付けるスペースを充分に確保できる。According to the second aspect of the present invention, since the screw groove to be screwed into the fastening screw is inserted into the electrode connection terminal, there is no need for a tool space on the screw groove side at the time of fastening. Sufficient mounting space can be secured.
【００２４】第３及び第４発明によれば、電極接続端子
は、締結螺子を通す挿通穴に交差する方向のピン穴を連
通させてあり、該ピン穴に、胴部に螺子穴を有するピン
を挿入し、この螺子穴に締結螺子を螺合させてある。従
って、ピンを電極接続端子よりも高強度な材質で形成し
た場合は、高い締結トルクで締結螺子を締めても螺子溝
が破壊されることはなく、ボルトの緩みに起因する接触
抵抗の増大を防止できる。According to the third and fourth aspects of the present invention, the electrode connection terminal has a pin hole in a direction intersecting the insertion hole through which the fastening screw passes, and the pin hole has a screw hole in the body. And a fastening screw is screwed into this screw hole. Therefore, if the pin is formed of a material having higher strength than the electrode connection terminal, the screw groove will not be broken even if the fastening screw is tightened with a high fastening torque, and the increase in the contact resistance due to the loosening of the bolt will not occur. Can be prevented.
【００２５】第５発明にあっては、ピンは銅合金製の電
極接続端子よりも高強度なステンレス鋼製であるので、
螺子溝が高締結トルクに耐え得る。In the fifth invention, since the pins are made of stainless steel, which has higher strength than the electrode connection terminals made of copper alloy,
The screw groove can withstand high fastening torque.
【図１】 本実施の形態の電極接続端子の構造を示す横
断面図である。FIG. 1 is a cross-sectional view showing a structure of an electrode connection terminal of the present embodiment.
【図２】 図１の電極接続端子を取付けた遮断器の主要
部を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing a main part of the circuit breaker to which the electrode connection terminal of FIG. 1 is attached.
【図３】 図１の割り型端子を電極棒に固定するための
螺子部材の螺合状態を示す斜視図である。FIG. 3 is a perspective view showing a screwed state of a screw member for fixing the split terminal of FIG. 1 to an electrode rod.
【図４】 従来の電極接続端子の構造を示す断面図であ
る。FIG. 4 is a cross-sectional view showing the structure of a conventional electrode connection terminal.
【図５】 従来の真空バルブの取付け装置の構造を示す
平面図である。FIG. 5 is a plan view showing the structure of a conventional vacuum valve mounting device.
１ 割り型端子、１ａ 割り部、１ｂ ピン穴、１ｃ
ボルト穴、２ 電極棒２ａ 嵌め孔、３ 孔付きピン、
３ａ 螺子孔、４ ボルト、７ 真空容器。1 split type terminal, 1a split section, 1b pin hole, 1c
Bolt hole, 2 electrode rod 2a fitting hole, 3 hole pin,
3a Screw holes, 4 volts, 7 vacuum vessel.
Claims (5)
なる割り部と、該割り部の両側に設けられ、該割り部を
貫いて締結螺子を挿通せしめる挿通穴と、軸方向を交え
て前記挿通穴に連通され、胴部に螺子穴を有するピンを
挿入すべきピン穴とを備えることを特徴とする電極接続
端子。1. A fitting hole for inserting an electrode, a split portion connected to the fitting hole, an insertion hole provided on both sides of the split portion, through which the fastening screw is inserted, and an axial direction. A pin hole to which a pin having a screw hole in a body portion is to be inserted.
ィンをさらに備える請求項１記載の電極接続端子。2. The electrode connection terminal according to claim 1, further comprising a radiating fin at least near the insertion hole.
より電気的に接続／遮断される一対の電極と、少なくと
も該電極の一方に固定される１又は複数の電極接続端子
と、該電極接続端子を前記電極に固定するための螺子部
材とを備え、該電極接続端子は、前記電極を挿嵌する嵌
め孔と、該嵌め孔に連なる割り部と、該割り部の両側に
設けられ、該割り部を貫いて締結螺子を挿通せしめる挿
通穴と、軸方向を交えて前記挿通穴に連通されたピン穴
とを有しており、前記螺子部材は、胴部に螺子穴を有
し、前記ピン穴に挿入されたピンと、該ピンの螺子穴に
螺合された前記締結螺子とで構成してあることを特徴と
する遮断器。3. A pair of electrodes arranged in a vacuum vessel and electrically connected / disconnected by relative movement thereof, at least one electrode connection terminal fixed to at least one of the electrodes, and A screw member for fixing the connection terminal to the electrode, the electrode connection terminal is provided on both sides of the fitting hole for inserting the electrode, a split portion connected to the fitting hole, and the split portion, It has an insertion hole through which the fastening screw is inserted through the split portion, and a pin hole that is communicated with the insertion hole across the axial direction, and the screw member has a screw hole in the body, A circuit breaker comprising: a pin inserted into the pin hole; and the fastening screw screwed into a screw hole of the pin.
有する材料を用いて形成してある請求項３記載の遮断
器。4. The circuit breaker according to claim 3, wherein the pins are formed using a material having higher strength than the electrode connection terminals.
端子は銅合金製である請求項３又は４記載の遮断器。5. The circuit breaker according to claim 3, wherein the pins are made of stainless steel, and the electrode connection terminals are made of a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14373599A JP3841589B2 (en) | 1999-05-24 | 1999-05-24 | Electrode connection terminal and circuit breaker having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14373599A JP3841589B2 (en) | 1999-05-24 | 1999-05-24 | Electrode connection terminal and circuit breaker having the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000340076A true JP2000340076A (en) | 2000-12-08 |
| JP3841589B2 JP3841589B2 (en) | 2006-11-01 |
Family
ID=15345803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14373599A Expired - Fee Related JP3841589B2 (en) | 1999-05-24 | 1999-05-24 | Electrode connection terminal and circuit breaker having the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3841589B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017179315A1 (en) * | 2016-04-12 | 2017-10-19 | 三菱電機株式会社 | Vacuum circuit breaker and gas-insulated switchgear and air-insulated switchgear having integrated vacuum circuit breaker |
| CN109119304A (en) * | 2017-12-20 | 2019-01-01 | 深圳市心版图科技有限公司 | A kind of spiral arc-extinguishing mechanism of power circuit breaker |
-
1999
- 1999-05-24 JP JP14373599A patent/JP3841589B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017179315A1 (en) * | 2016-04-12 | 2017-10-19 | 三菱電機株式会社 | Vacuum circuit breaker and gas-insulated switchgear and air-insulated switchgear having integrated vacuum circuit breaker |
| JP6227210B1 (en) * | 2016-04-12 | 2017-11-08 | 三菱電機株式会社 | Vacuum circuit breaker, gas insulated switchgear equipped with vacuum circuit breaker and air insulated switchgear |
| US10923303B2 (en) | 2016-04-12 | 2021-02-16 | Mitsubishi Electric Corporation | Vacuum circuit breaker, gas insulated switchgear and air insulated switchgear mounted with the vacuum circuit breaker |
| CN109119304A (en) * | 2017-12-20 | 2019-01-01 | 深圳市心版图科技有限公司 | A kind of spiral arc-extinguishing mechanism of power circuit breaker |
| CN109119304B (en) * | 2017-12-20 | 2019-09-03 | 嘉兴市加控电气设备制造有限公司 | A kind of spiral arc-extinguishing mechanism of power circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3841589B2 (en) | 2006-11-01 |
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