JPS645340Y2 - - Google Patents
Info
- Publication number
- JPS645340Y2 JPS645340Y2 JP12570383U JP12570383U JPS645340Y2 JP S645340 Y2 JPS645340 Y2 JP S645340Y2 JP 12570383 U JP12570383 U JP 12570383U JP 12570383 U JP12570383 U JP 12570383U JP S645340 Y2 JPS645340 Y2 JP S645340Y2
- Authority
- JP
- Japan
- Prior art keywords
- arc
- container
- extinguishing
- pressure
- movable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000005452 bending Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 description 12
- 239000004020 conductor Substances 0.000 description 11
- 239000011368 organic material Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 8
- 229910010272 inorganic material Inorganic materials 0.000 description 6
- 239000011147 inorganic material Substances 0.000 description 6
- 230000007423 decrease Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000013212 metal-organic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
この考案は開閉器に関するものであり、特に容
器内の圧力を抑制するようにした開閉器に関する
ものである。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a switch, and particularly to a switch that suppresses the pressure inside a container.
なおこの考案でいう開閉器とは、特に回路しや
断器、限流器、電磁開閉器などの容器、通常は小
型容器内でアークを生じるものを示し、以下回路
しや断器を例に説明する。 In addition, the switch referred to in this invention refers to a container such as a circuit breaker, current limiter, or electromagnetic switch, which usually generates an arc within a small container. explain.
第１図ないし第３図は従来の回路しや断器を示
す断面図で、それぞれ異なつた動作状態を示して
いる。第４図は第１図ないし第３図に示す消弧板
の拡大斜視図である。
1 to 3 are cross-sectional views of conventional circuits and disconnectors, each showing different operating conditions. FIG. 4 is an enlarged perspective view of the arc-extinguishing plate shown in FIGS. 1 to 3.
第１図ないし第３図において、１はカバー、２
はベースで、カバー１とベース２とで容器３を構
成している。４は固定接触子で、固定導体５と、
固定導体５の一端に設けられた固定接点６とで構
成され、固定導体５の他端は外部導体（図示せ
ず）に接続される端子部になつている。７は可動
接触子で、可動導体８と、可動導体８の一端に固
定接点６に対向して設けられた可動接点９とで構
成されている。１０は可動接触子装置で、可動導
体８の他端部を回動可能に支持する可動子腕１１
と、可動子腕１１の他端部を回動可能に支持する
クロスバー１２とで構成され、各極同時に開閉さ
れるようになされている。１３は消弧室で、Ｖ字
状もしくはＵ字状の切欠きを有する消弧板１４
と、消弧板１４を挾持する一対の側板１５とによ
つて構成されており、消弧板１４は両側の突起１
４０により側板１５に保持されている。１６はト
グルリンク機構で、上リンク１７と下リンク１８
とで構成されており、上リンク１７の一端はクレ
ドル１９に軸２０によつて回動可能に連結され、
上リンク１７の他端は下リンク１８の一端に軸２
１により回動可能に連結されている。また下リン
ク１８の他端は可動接触子装置１０の可動子腕１
１の中間部に回動可能に連結されている。２２は
起到形操作ハンドルで、可動子腕１１を開閉操作
するものである。２３は作動ばねで、トグルリン
ク機構１６の軸２１と操作ハンドル２２との間に
架張されている。２４，２５はそれぞれ熱動およ
び電磁引きはずし機構で、作動時にはそれぞれバ
イメタル２６および可動鉄心２７により、トリツ
プバー２８を反時計方向に回動させるようになつ
ている２９はラツチで、その一端はトリツプバー
２８に係止され、他端はクレドル１９に係止され
ている。 In Figures 1 to 3, 1 is a cover, 2
is a base, and a cover 1 and a base 2 constitute a container 3. 4 is a fixed contact, and a fixed conductor 5,
A fixed contact 6 is provided at one end of a fixed conductor 5, and the other end of the fixed conductor 5 is a terminal portion connected to an external conductor (not shown). A movable contact 7 is composed of a movable conductor 8 and a movable contact 9 provided at one end of the movable conductor 8 to face the fixed contact 6. Reference numeral 10 denotes a movable contact device, and a movable arm 11 rotatably supports the other end of the movable conductor 8.
and a cross bar 12 that rotatably supports the other end of the movable arm 11, and each pole is opened and closed at the same time. 13 is an arc extinguishing chamber, and an arc extinguishing plate 14 having a V-shaped or U-shaped notch
and a pair of side plates 15 that sandwich the arc-extinguishing plate 14, and the arc-extinguishing plate 14 has protrusions 1 on both sides.
40 to the side plate 15. 16 is a toggle link mechanism, with an upper link 17 and a lower link 18
One end of the upper link 17 is rotatably connected to the cradle 19 by a shaft 20,
The other end of the upper link 17 is connected to the shaft 2 at one end of the lower link 18.
1 is rotatably connected. The other end of the lower link 18 is connected to the movable arm 1 of the movable contact device 10.
It is rotatably connected to the middle part of 1. Reference numeral 22 denotes a raised-type operating handle for opening and closing the movable arm 11. Reference numeral 23 denotes an operating spring, which is stretched between the shaft 21 of the toggle link mechanism 16 and the operating handle 22. Reference numerals 24 and 25 indicate thermal and electromagnetic tripping mechanisms, respectively, which rotate the trip bar 28 counterclockwise by means of a bimetal 26 and a movable iron core 27 when activated. Reference numeral 29 indicates a latch, one end of which rotates the trip bar 28 in the counterclockwise direction. The other end is locked to the cradle 19.
次に動作について説明する。今、クレドル１９
がラツチ２９に係止した状態で操作ハンドル２２
を閉路位置に倒せば、トグルリンク機構１６が伸
長して軸２１がクレドル１９に係止され、可動接
点９は固定接点６に接合される。この状態が第１
図である。 Next, the operation will be explained. Now, Credle 19
is locked in the latch 29, the operation handle 22 is
When the toggle link mechanism 16 is moved to the closed position, the toggle link mechanism 16 is extended, the shaft 21 is locked to the cradle 19, and the movable contact 9 is joined to the fixed contact 6. This state is the first
It is a diagram.
次いで操作ハンドル２２を開路位置に倒せば、
トグルリンク機構１６は屈曲して、可動接点９を
固定接点６から開離させ、可動子腕１１がクレド
ル軸３０に係止される。この状態が第２図であ
る。 Then, by tilting the operating handle 22 to the open position,
The toggle link mechanism 16 is bent to separate the movable contact 9 from the fixed contact 6, and the movable arm 11 is locked to the cradle shaft 30. This state is shown in FIG.
また前記第１図に示す閉路状態で回路に過電流
が流れると、熱動引きはずし機構２４あるいは電
磁引きはずし機構２５が作動して、クレドル１９
とラツチ２９との係合が解除され、クレドル軸３
０を中心に時計方向にクレドル１９が回転し、ス
トツパー軸３１に係止される。この場合、クレド
ル１９と上リンク１７との連結点が、作動ばね２
３の作用線を越えるため、作動ばね２３のばね力
によつてトグルリンク機構１６が屈曲して、クロ
スバー１２を中心に可動子腕１１が反時計方向に
回動し、各極連動して自動しや断を行なう。この
状態が第３図である。 Furthermore, if an overcurrent flows through the circuit in the closed state shown in FIG.
The engagement with the latch 29 is released, and the cradle shaft 3
The cradle 19 rotates clockwise around 0 and is locked to the stopper shaft 31. In this case, the connection point between the cradle 19 and the upper link 17 is connected to the operating spring 2.
3, the toggle link mechanism 16 is bent by the spring force of the operating spring 23, and the movable arm 11 rotates counterclockwise around the cross bar 12, and each pole interlocks. Performs automatic cutting. This state is shown in FIG.
次に回路しや断器が電流しや断時に発生するア
ークの状態について説明する。今、可動接点９と
固定接点６とが接触している場合においては、そ
の電力は電源側より固定導体５→固定接点６→可
動接点９→可動導体８を順次経由して負荷側へ供
給される。この状態において、短絡電流等大電流
がこの回路に流れると、前述したように、可動接
点９を固定接点６から開離させる。この際、固定
接点６と可動接点９間に第３図に示すようにアー
ク３２が発生し、固定、可動接点６，９間にはア
ーク電圧が発生する。このアーク電圧は、固定接
点６からの可動接点９の開離距離が増大するに従
つて上昇し、また、同時にアーク３２が消弧板１
４の方向へ磁気力によつて３２Ａで示すように引
き付けられ伸長するために、更に上昇する。この
ようにして、アーク３２は電流零点を迎えて消弧
され、しや断が完結する。しかし、この注入され
た莫大なアークエネルギは、最終的には熱エネル
ギの形になり完全に容器外に逃げ去るが、過渡的
には限られた容器内のガスの温度を上昇させ、引
いてはガス圧力を急激に上昇させることになる。
これにより回路しや断器内部の絶縁劣化、回路し
や断器外部への放出火花量の増大による電源短絡
事故、回路しや断器本体の破壊等の重大な事故が
発生する欠点があつた。 Next, the state of the arc that occurs when the circuit or breaker interrupts the current flow will be explained. Now, when the movable contact 9 and the fixed contact 6 are in contact, the power is supplied from the power supply side to the load side via the fixed conductor 5 → fixed contact 6 → movable contact 9 → movable conductor 8. Ru. In this state, when a large current such as a short circuit current flows through this circuit, the movable contact 9 is separated from the fixed contact 6 as described above. At this time, an arc 32 is generated between the fixed contact 6 and the movable contact 9 as shown in FIG. 3, and an arc voltage is generated between the fixed and movable contacts 6 and 9. This arc voltage increases as the separation distance of the movable contact 9 from the fixed contact 6 increases, and at the same time, the arc 32
It further rises because it is attracted and elongated in the direction of 4 by the magnetic force as shown at 32A. In this way, the arc 32 reaches the current zero point and is extinguished, completing the shearing. However, this huge amount of arc energy that is injected eventually becomes thermal energy and completely escapes from the container, but it temporarily increases the temperature of the gas inside the container, which is will cause the gas pressure to rise rapidly.
This has the drawback of causing serious accidents such as deterioration of the insulation inside the circuit breaker or disconnector, power supply short-circuit accidents due to an increase in the amount of sparks emitted to the outside of the circuit breaker or disconnector, and destruction of the circuit breaker or disconnector itself. .
次に、アークエネルギによる容器内のガス圧力
上昇抑制のメカニズムについて詳述する。容器内
圧力Ｐは
Ｐ∝kNT（atm） 〔〕
ただしｋ：ボルツマン定数 （Ｊ／Ｋ）
Ｎ：容器内粒子数
Ｔ：容器内平均温度(K)
で表わされる。つまり、容器内の圧力Ｐを抑制す
るためには、容器内粒子数Ｎを低減させるか、容
器内平均温度Ｔを低減させればよい。 Next, the mechanism of suppressing the increase in gas pressure within the container due to arc energy will be described in detail. The pressure inside the container P is expressed as P∝kNT (atm) [] where k: Boltzmann constant (J/K) N: number of particles inside the container T: average temperature inside the container (K). That is, in order to suppress the pressure P in the container, it is sufficient to reduce the number N of particles in the container or to reduce the average temperature T in the container.
ここで、回路しや断器、限流器、電磁開閉器等
の開閉器の容器内での容器内粒子数Ｎ、容器内平
均温度Ｔの様子と、容器内圧力Ｐについての関連
をみてみる。 Here, let's look at the relationship between the number of particles N in the container, the average temperature T in the container, and the pressure P in the container of switches such as circuit breakers, current limiters, and electromagnetic switches. .
容器内粒子数Ｎと容器内圧力Ｐとの関連は次の
ようである。すなわち、アークが発弧するとアー
ク陽光柱から2000〜3000度のガスが容器内に放出
される。その際、容器内粒子数Ｎにより容器内圧
力Ｐを上昇させる要因として、次の二点が考えら
れる。まず、アーク陽光柱近傍に、有機材料のよ
うに昇華点温度が200℃程度のものがある場合に
は、その材料の蒸気により容器内粒子数Ｎが増加
するため、容器内圧力Ｐが増加する。従つて、容
器内圧力Ｐを抑制するためには、アーク陽光柱近
傍に有機材料を配置しないようにするか、アーク
に曝される有機材料の部分に無機質のような高融
点で蒸気の出にくい材料を配置すればよい。ちな
みに、アーク陽光柱近傍に有機材料を配置した場
合の容器内圧力Ｐが、どのようになるかのモデル
実験データを第５図に示す。 The relationship between the number N of particles in the container and the pressure P in the container is as follows. That is, when the arc ignites, gas at a temperature of 2,000 to 3,000 degrees is released into the container from the arc's positive column. At this time, the following two points can be considered as factors for increasing the pressure P inside the container due to the number N of particles inside the container. First, if there is something with a sublimation point temperature of about 200°C, such as an organic material, near the arc positive column, the vapor of that material will increase the number of particles N in the container, and therefore the pressure P in the container will increase. . Therefore, in order to suppress the pressure inside the container P, it is necessary to avoid arranging organic materials near the arc positive column, or to use inorganic materials that have a high melting point and are difficult to vaporize in the part of the organic material that is exposed to the arc. Just place the materials. Incidentally, FIG. 5 shows model experimental data of what the pressure P inside the container will be when an organic material is placed near the arc positive column.
第５図ａは一対の電極３４ａ，３４ｂに対して
容器内で配置材料３５ａ，３５ｂを距離ｌへだて
て設置した状態を示し、第５図ｂは第５図ａの距
離ｌに対する容器内圧力Ｐとの関係を示す特性曲
線図で、特性曲線イは配置材料３５ａ，３５ｂと
してベークライトを用いたものを、特性曲線ロは
銅板を用いたものを、特性曲線ハはガラス入りポ
リエステルを用いたものをそれだけ示したもので
ある。これは、密閉方形１容器にて時間8msの
パルス電流の波高値約15KA時に、アーク陽光柱
近傍に配置材料３５ａ，３５ｂを設けないとこの
容器内圧力Ｐを１とし、配置材料３５ａ，３５ｂ
の電極３４ａ，３４ｂからの距離ｌを種々に変え
た際の規格化された圧力値を示している。 Fig. 5a shows a state in which the arrangement materials 35a and 35b are set apart from each other at a distance l in the container with respect to the pair of electrodes 34a and 34b, and Fig. 5b shows the pressure inside the container P for the distance l shown in Fig. 5a. In the characteristic curve diagram showing the relationship between That's all it shows. This means that when the peak value of a pulse current of 8 ms is approximately 15 KA in one closed rectangular container, the pressure inside this container is 1 unless the placement materials 35a and 35b are provided near the arc positive column, and the placement materials 35a and 35b are
The normalized pressure values are shown when the distance l from the electrodes 34a, 34b is varied.
次に容器内粒子数Ｎを増加させる要因として、
電極材料の蒸気がある。これによる容器内圧力Ｐ
を抑制するためには、電極材料の蒸気を軽減させ
ること、つまり電極消耗量を軽減させることが必
要である。電極の消耗量Ｗ（mg）は
ただし Ｉ：通過電流(A)
Ｓ：アークの足の大きさ（mm2）
として実験的に表わされる。このため、電極の消
耗量Ｗを軽減させ、容器内粒子数Ｎを下げ、容器
内圧力Ｐを抑制するためには、アークの足の大き
さＳを大きくしてやればよい。 Next, the factors that increase the number of particles in the container N are:
There is vapor of electrode material. The pressure inside the container P due to this
In order to suppress this, it is necessary to reduce the vapor of the electrode material, that is, to reduce the amount of electrode consumption. The amount of electrode consumption W (mg) is However, it is expressed experimentally as: I: Passing current (A) S: Size of arc foot (mm 2 ). Therefore, in order to reduce the consumption amount W of the electrode, reduce the number N of particles in the container, and suppress the pressure P in the container, the size S of the arc foot may be increased.
容器内平均温度Ｔと容器内圧力Ｐとの関連は次
のようである。すなわち、アークが発弧するとア
ーク陽光柱から数千度のガスが容器内に放出され
る。その際、容器内平均温度Ｔが上昇するため、
容器内圧力Ｐが上昇する。容器内圧力Ｐを抑制す
るには、アーク陽光柱からの数千度のガスをでき
るだけ短時間で冷却してやればよい。その冷却手
法としては次の２点がある。まず第１として第５
図の実験例からも分かるように、アーク陽光柱近
傍に金属板、無機材料などのような高融点で熱吸
収能のよい、つまり、比熱、熱伝導率、蒸発潜
熱、誘解潜熱の高いものを配置すればよい。金属
板、無機材料なども有機材料と同様に蒸気を出
し、容器内粒子数は増加するが、それ以上に熱吸
収能がよく容器内平均温度Ｔが低下する。ちなみ
に銅0.1ｇを蒸発させるに必要なエネルギは0.6KJ
である。第５図のモデル実験では配置材料３５
ａ，３５ｂのアークからの距離が10mmのところ
で、銅の蒸気は総量0.3mg程度であつた。その蒸
気に要するエネルギは1.6KJ（容器内の全注入エ
ネルギは約8KJ）になつており、アークからのガ
スにより金属材料、無機材料が蒸気する際には、
多量の熱交換が行なわれることがわかる。 The relationship between the average temperature T in the container and the pressure P in the container is as follows. That is, when the arc ignites, gas at several thousand degrees Celsius is emitted from the arc positive column into the container. At that time, since the average temperature T inside the container increases,
Pressure P inside the container increases. In order to suppress the pressure P inside the container, it is sufficient to cool down the several thousand degree gas from the arc positive column in as short a time as possible. There are two cooling methods as follows. First of all, the fifth
As can be seen from the experimental example in the figure, materials such as metal plates and inorganic materials with a high melting point and good heat absorption ability, such as metal plates and inorganic materials, are used near the arc positive column, in other words, with high specific heat, thermal conductivity, latent heat of vaporization, and latent heat of induction. All you have to do is place the . Metal plates, inorganic materials, etc. emit steam in the same way as organic materials, and the number of particles in the container increases, but they have better heat absorption ability and the average temperature T in the container decreases. By the way, the energy required to evaporate 0.1g of copper is 0.6KJ.
It is. In the model experiment shown in Figure 5, the arrangement material 35
At a distance of 10 mm from the arc at points a and 35b, the total amount of copper vapor was about 0.3 mg. The energy required for the steam is 1.6KJ (the total energy injected into the container is approximately 8KJ), and when metal and inorganic materials are vaporized by the gas from the arc,
It can be seen that a large amount of heat exchange takes place.
次の手法としては、有機材料においても熱伝導
のよいある種の有機材料では、陽光柱からある程
度離れたところにあるものについては、例えば第
５図の配置材料３５ａ，３５ｂがガラス入りポリ
エステルにて電極３４ａ，３４ｂからの距離が20
mm前後のところにあるものについては、有機材料
から蒸気を出すことなく熱吸収が行なえ、容器内
平均温度Ｔが低下し、容器内圧力Ｐの抑制が可能
となる。 The next method is to use glass-containing polyester as the arrangement materials 35a and 35b in Fig. 5, for example, for certain types of organic materials that have good thermal conductivity and are located a certain distance from the sunlight column. The distance from the electrodes 34a and 34b is 20
For those around mm, heat can be absorbed without emitting steam from the organic material, the average temperature T in the container decreases, and the pressure P in the container can be suppressed.
以上述べたように、容器内圧力Ｐの抑制は、Ｐ
∝kNTの容器内粒子数Ｎ、容器内温度Ｔを下げ
ることにより可能となるものである。 As mentioned above, suppressing the pressure inside the container P
This is made possible by lowering the number N of particles in the container of ∝kNT and the temperature T inside the container.
この考案は消弧板の側板に接する部分を折曲げ
ることにより、前述のアーク陽光柱近傍にある有
機材料である側板の昇華を防ぎ、容器内粒子数Ｎ
を低下させ、容器内圧力Ｐを抑制した開閉器を提
供することを目的としている。
This idea prevents sublimation of the side plate, which is an organic material near the aforementioned arc positive column, by bending the part of the arc extinguishing plate that contacts the side plate, and the number of particles in the container is N.
The purpose of the present invention is to provide a switch that suppresses the internal pressure P of the container.
以下この考案の一実施例を図について説明す
る。第６図はこの考案に係る開閉器の一実施例を
示す側断面図、第７図は第６図に示す消弧室の拡
大斜視図、第８図は第７図に示す消弧板の斜視図
である。図中第１図ないし第４図と同一部分には
同一符号を付している。第６図ないし第８図にお
いて、消弧室１３Ａは、例えば鉄、ステンレス等
の金属材料もしくはコージライト、アルミナ等の
無機材料からなりＶ字状もしくはＵ字状の切欠き
１４１と両側部の折曲げ部１４２，１４３とを有
する消弧板１４Ａと、例えばガラス入りポリエス
テル等の有機材料からなり消弧板１４Ａを挾持す
る一対の側板１５Ａ，１５Ｂとによつて構成され
ている。なお、上記実施例では突起１４０部分の
欠ける折曲げ部１４２，１４３を示したが、折曲
げ部１４２，１４３を消弧板１４Ａの全長にわた
り折曲げて形成してもよい。この場合突起１４０
は別設しても良く、消弧板１４Ａの側板１５Ａ，
１５Ｂへの取付は任意適当な手段で行なうことが
できる。
An embodiment of this invention will be described below with reference to the drawings. Fig. 6 is a side sectional view showing an embodiment of the switch according to this invention, Fig. 7 is an enlarged perspective view of the arc extinguishing chamber shown in Fig. 6, and Fig. 8 is an enlarged perspective view of the arc extinguishing plate shown in Fig. 7. FIG. In the drawings, the same parts as in FIGS. 1 to 4 are designated by the same reference numerals. In FIGS. 6 to 8, the arc extinguishing chamber 13A is made of a metal material such as iron or stainless steel, or an inorganic material such as cordierite or alumina, and has a V-shaped or U-shaped notch 141 and folds on both sides. The arc-extinguishing plate 14A includes bent portions 142 and 143, and a pair of side plates 15A and 15B made of an organic material such as glass-filled polyester and sandwiching the arc-extinguishing plate 14A. In addition, although the bending parts 142, 143 in which the protrusion 140 portion is missing are shown in the above embodiment, the bending parts 142, 143 may be formed by bending over the entire length of the arc-extinguishing plate 14A. In this case, the protrusion 140
may be provided separately, and the side plate 15A of the arc extinguishing plate 14A,
Attachment to 15B can be done by any suitable means.
この考案は以上のように構成され、消弧板１４
Ａの折曲げ部１４２，１４３が側板１５Ａ，１５
Ｂに接して取付けられているため、アーク３２Ａ
が直接側板１５Ａ，１５Ｂに触れることなく、消
弧板１４Ａの折曲げ部１４２，１４３に当たる。
従つて、有機材料で構成されている一対の側板１
５Ａ，１５Ｂは昇華されにくく、消弧室１３Ａ内
の容器内粒子数Ｎは増加しない。また熱吸収能が
よい折曲げ部１４２，１４３にアーク３２Ａが直
接当るため、容器内平均温度が低下し、容器内圧
力Ｐも低下する。このため、開閉器外部への放出
火花量の抑制が可能となり、電源短絡事故、開閉
器容器本体の破壊を防ぐことができる。
This invention is constructed as described above, and the arc-extinguishing plate 14
The bent portions 142 and 143 of A are the side plates 15A and 15
Since it is installed in contact with B, arc 32A
hits the bent portions 142, 143 of the arc-extinguishing plate 14A without directly touching the side plates 15A, 15B.
Therefore, a pair of side plates 1 made of organic material
5A and 15B are difficult to sublimate, and the number N of particles in the container in the arc extinguishing chamber 13A does not increase. Further, since the arc 32A directly hits the bent portions 142 and 143, which have good heat absorption ability, the average temperature inside the container decreases, and the pressure P inside the container also decreases. Therefore, it is possible to suppress the amount of sparks emitted to the outside of the switch, and it is possible to prevent a power short circuit accident and destruction of the switch container body.
なお、上記実施例では全ての消弧板１４Ａに折
曲げ部１４２，１４３を設けた場合を示したが、
一枚もしくは複数枚の消弧板１４Ａにのめ折曲げ
部１４２，１４３を設けても、同様の効果を得る
ことができる。 In addition, although the case where the bending parts 142 and 143 were provided in all the arc-extinguishing plates 14A was shown in the said Example,
The same effect can be obtained even if the bending portions 142, 143 are provided on one or more arc-extinguishing plates 14A.
以上のようにこの考案によれば、電源短絡事
故、開閉器容器本体の破壊が防止でき、信頼度が
向上する等の諸効果を有する。 As described above, this invention has various effects such as being able to prevent power supply short-circuit accidents and destruction of the switch container body, and improving reliability.
第１図ないし第３図は従来の回路しや断器のそ
れぞれ異なつた動作状態を示す側断面図、第４図
は第１図ないし第３図に示す消弧板の拡大斜視
図、第５図ａ，ｂは容器内圧力抑制の説明図、第
６図はこの考案に係る回路しや断器の一実施例を
示す側断面図、第７図は第６図に示す消弧室の拡
大斜視図、第８図は第７図に示す消弧板の斜視図
である。
図において、４は固定接触子、５は固定導体、
６は固定接点、７は可動接触子、８は可動導体、
９は可動接点、１３Ａは消弧室、１４１は切欠
き、１４２，１４３は折曲げ部、１５Ａ，１５Ｂ
は一対の側板である。なお各図中同一符号は同一
部分を示す。
Figures 1 to 3 are side sectional views showing different operating states of conventional circuit breakers; Figure 4 is an enlarged perspective view of the arc extinguishing plate shown in Figures 1 to 3; Figures a and b are explanatory diagrams for suppressing the pressure inside the container, Figure 6 is a side sectional view showing an embodiment of the circuit breaker and circuit breaker according to this invention, and Figure 7 is an enlarged view of the arc extinguishing chamber shown in Figure 6. A perspective view, FIG. 8 is a perspective view of the arc-extinguishing plate shown in FIG. In the figure, 4 is a fixed contact, 5 is a fixed conductor,
6 is a fixed contact, 7 is a movable contact, 8 is a movable conductor,
9 is a movable contact, 13A is an arc extinguishing chamber, 141 is a notch, 142, 143 are bent parts, 15A, 15B
are a pair of side plates. Note that the same reference numerals in each figure indicate the same parts.
Claims (1)
よび消弧板と前記消弧板の両側部を挾持する一
対の側板とからなり前記一対の接触子の開離時
に発生するアークを消弧する消弧室を備え、前
記側板の内表面を覆うように前記消弧板の両側
部を折曲げてなる開閉器。 ２ 消弧板は複数枚一対の側板に挾持され、前記
複数枚の消弧板の少なくとも一枚の両側部は、
それぞれ前記側板の内表面を覆うように折曲げ
られた実用新案登録請求の範囲第１項記載の開
閉器。[Claims for Utility Model Registration] 1. Comprised of at least one pair of contacts that open and close, and an arc-extinguishing plate and a pair of side plates that clamp both sides of the arc-extinguishing plate, and generated when the pair of contacts open and close. The switch is provided with an arc extinguishing chamber for extinguishing an arc caused by the arc, and is formed by bending both sides of the arc extinguishing plate so as to cover the inner surface of the side plate. 2. A plurality of arc-extinguishing plates are held between a pair of side plates, and at least one side portion of the plurality of arc-extinguishing plates is
The switch according to claim 1, wherein each switch is bent so as to cover the inner surface of the side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12570383U JPS6032746U (en) | 1983-08-11 | 1983-08-11 | switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12570383U JPS6032746U (en) | 1983-08-11 | 1983-08-11 | switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6032746U JPS6032746U (en) | 1985-03-06 |
| JPS645340Y2 true JPS645340Y2 (en) | 1989-02-09 |
Family
ID=30286091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12570383U Granted JPS6032746U (en) | 1983-08-11 | 1983-08-11 | switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032746U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5838056B2 (en) * | 2011-08-11 | 2015-12-24 | 富士通コンポーネント株式会社 | Switches and connectors |
-
1983
- 1983-08-11 JP JP12570383U patent/JPS6032746U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6032746U (en) | 1985-03-06 |
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