JP2012018894A - Vacuum valve and manufacturing method thereof - Google Patents

Vacuum valve and manufacturing method thereof Download PDF

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JP2012018894A
JP2012018894A JP2010157236A JP2010157236A JP2012018894A JP 2012018894 A JP2012018894 A JP 2012018894A JP 2010157236 A JP2010157236 A JP 2010157236A JP 2010157236 A JP2010157236 A JP 2010157236A JP 2012018894 A JP2012018894 A JP 2012018894A
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fixed
vacuum valve
contact
manufacturing
electrode
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JP5563914B2 (en
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Hiroki Sekimori
裕希 関森
Keisei Seki
経世 関
Kiyoshi Osabe
清 長部
Kosuke Sasage
浩資 捧
Hiromichi Somei
宏通 染井
Kiyotaka Miyata
清隆 宮田
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Toshiba Corp
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Toshiba Corp
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Abstract

PROBLEM TO BE SOLVED: To facilitate the fixation and alignment of electrodes and conductive shafts which are assembled in advance as partial assemblies.SOLUTION: A vacuum valve comprises: a pair of contacts 6 and 8 which are freely brought into contact with and separate from each other; and conductive shafts 4 and 10 to which the contacts 6 and 8 are fixed. At the ends of the contacts 6 and 8 and at the ends of the conductive shafts 4 and 10, projections 4a and 10a are arranged on one side, and recesses 5a and 9a are arranged on the other side. The projections 4a and 10a and the recesses 5a and 9a are provided with through-holes 4b, 5b, 9b and 10b, respectively. Fixing bars 7 and 11 are inserted in the through-holes 4b, 5b, 9b and 10b. The projection 4a and the recess 5a are fixed to each other, and the projection 10a and the recess 9a are fixed to each other.

Description

本発明の実施形態は、ろう付け方法を改善した接離自在の一対の接点を有する真空バルブおよびその製造方法に関する。   Embodiments of the present invention relate to a vacuum valve having a pair of contactable and separable contacts, which is an improved brazing method, and a method of manufacturing the same.

真空バルブの製造にあたっては、接点、電極、通電軸などで構成される固定側部材と可動側部材とのそれぞれを固定する部分組立てと、部分組立した固定側部材と可動側部材とを真空絶縁容器に固定する全体組立てとの複数回（二回）のろう付け作業が行われている。ろう付け作業を改善する方法として、電極と通電軸をかしめて固定しておき、全体組立て時にろう付けを行うものがある（例えば、特許文献１参照。）。しかしながら、磁界を発生させるコイル状の電極では、かしめにおいて、充分なる機械的な固定強度を得ることが困難であった。   In manufacturing a vacuum valve, a partial assembly for fixing each of a fixed side member and a movable side member composed of contacts, electrodes, current-carrying shafts, etc., and the partially assembled fixed side member and the movable side member are connected to a vacuum insulating container. A plurality of (twice) brazing operations are performed with the entire assembly fixed to the base. As a method for improving the brazing operation, there is a method in which an electrode and a current-carrying shaft are caulked and fixed, and brazing is performed during the entire assembly (for example, see Patent Document 1). However, with a coiled electrode that generates a magnetic field, it has been difficult to obtain sufficient mechanical fixing strength during caulking.

また、電極と通電軸間にろう材を挟んでこれらをねじ止めしておき、全体組立て時にろう付けを行うものがある（例えば、特許文献２参照。）。しかしながら、スリット状の電極では、スリット角度と通電軸との位置合せが困難であった。更には、接点と電極を一体で溶融し構成するものがある（例えば、特許文献３参照。）。しかしながら、部分組立てとして、通電軸とのろう付け作業が必要であった。   In addition, there is a type in which a brazing material is sandwiched between an electrode and a current-carrying shaft and these are screwed, and brazing is performed during the entire assembly (for example, see Patent Document 2). However, with a slit-shaped electrode, it is difficult to align the slit angle and the current-carrying shaft. Furthermore, there is one in which contacts and electrodes are integrally melted (see, for example, Patent Document 3). However, as part assembly, a brazing operation with a current-carrying shaft is necessary.

特開平１０−２４１４８６号公報JP-A-10-241486 特開平８−３１２７９号公報JP-A-8-31279 特開２００２−２７００７１号公報JP 2002-270071 A

部分組立て時のろう付けを全体組立て時に行う従来の真空バルブにおいては、電流遮断時に磁界を発生させるコイル状やスリット状の電極を用いる場合、電極と通電軸との固定強度や位置合せに問題があった。   In conventional vacuum valves that perform brazing during partial assembly during overall assembly, when using a coiled or slit-like electrode that generates a magnetic field when the current is interrupted, there are problems with the fixing strength and alignment between the electrode and the current-carrying shaft. there were.

本発明は上記問題を解決するためになされたもので、磁界を発生させる電極においても、ろう付けをしない部分組立て時に、通電軸との固定強度を確保でき、位置合せを容易とし得る真空バルブおよびその製造方法を提供することを目的とする。   The present invention has been made to solve the above problem, and even in an electrode that generates a magnetic field, a vacuum valve that can secure a fixing strength with a current-carrying shaft and facilitate alignment when partially assembled without brazing. It aims at providing the manufacturing method.

上記目的を達成するために、実施形態の真空バルブは、接離自在の一対の接点と、前記接点が固着される通電軸とを有する真空バルブにおいて、前記接点端部と前記通電軸端部とには、一方に凸部、他方に凹部が設けられ、この凸部と凹部とには、それぞれ貫通孔が設けられ、これらの貫通孔には、固定棒が挿入され、前記凸部と前記凹部間が固定されていることを特徴とする。   In order to achieve the above object, a vacuum valve according to an embodiment is a vacuum valve having a pair of contactable and separable contacts and a current-carrying shaft to which the contact is fixed, and the contact end and the current-carrying shaft end. Are provided with a convex portion on one side and a concave portion on the other side, and through holes are provided in the convex portion and the concave portion, respectively, and a fixing rod is inserted into these through holes, and the convex portion and the concave portion are provided. It is characterized by a fixed interval.

本発明の実施例１に係る真空バルブの構成を示す断面図。Sectional drawing which shows the structure of the vacuum valve which concerns on Example 1 of this invention. 本発明の実施例１に係る真空バルブの製造方法を説明する拡大断面図。The expanded sectional view explaining the manufacturing method of the vacuum valve concerning Example 1 of the present invention. 本発明の実施例２に係る真空バルブの製造方法を説明する拡大断面図。The expanded sectional view explaining the manufacturing method of the vacuum valve concerning Example 2 of the present invention. 本発明の実施例３に係る真空バルブの製造方法を説明する拡大断面図。The expanded sectional view explaining the manufacturing method of the vacuum valve concerning Example 3 of the present invention.

以下、図面を参照して本発明の実施例を説明する。   Embodiments of the present invention will be described below with reference to the drawings.

先ず、本発明の実施例１に係る真空バルブを図１、図２を参照して説明する。図１は、本発明の実施例１に係る真空バルブの構成を示す断面図、図２は、本発明の実施例１に係る真空バルブの製造方法を説明する拡大断面図である。   First, a vacuum valve according to Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a cross-sectional view illustrating a configuration of a vacuum valve according to a first embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view illustrating a method for manufacturing a vacuum valve according to the first embodiment of the present invention.

図１に示すように、アルミナ磁器からなる筒状の真空絶縁容器１の両端開口部には、固定側封着金具２と可動側封着金具３が封着されている。固定側封着金具２には、固定側通電軸４が貫通固定され、真空絶縁容器１内の端部に、例えば縦磁界を発生するコイル状の固定側電極５、および固定側接点６が固着されている。   As shown in FIG. 1, a fixed-side sealing metal fitting 2 and a movable-side sealing metal fitting 3 are sealed at both end openings of a cylindrical vacuum insulating container 1 made of alumina porcelain. A fixed-side energizing shaft 4 is fixed through the fixed-side sealing metal fitting 2, and a coil-shaped fixed-side electrode 5 and a fixed-side contact 6 that generate, for example, a longitudinal magnetic field are fixed to the end of the vacuum insulating container 1. Has been.

ここで、固定側通電軸４側には円柱状の凸部４ａが設けられ、固定側電極５側には凸部４ａが嵌合される円柱状の凹部５ａが設けられ、これらには軸方向と直交する方向に貫通孔４ｂ、５ｂが設けられている。貫通孔４ｂ、５ｂには、ステンレスの固定棒７が挿入されている。凸部４ａ面と凹部５ａ面は、ろう付けで固定されている。   Here, a cylindrical convex portion 4a is provided on the fixed-side energizing shaft 4 side, and a cylindrical concave portion 5a to which the convex portion 4a is fitted is provided on the fixed-side electrode 5 side. Through-holes 4b and 5b are provided in a direction orthogonal to. A stainless fixing rod 7 is inserted into the through holes 4b and 5b. The convex portion 4a surface and the concave portion 5a surface are fixed by brazing.

固定側接点６と対向して接離自在の可動側接点８、および可動側電極９が可動側封着金具３を移動自在に貫通する可動側通電軸１０端部に固着されている。   A movable-side contact 8 that can be moved toward and away from the fixed-side contact 6 and a movable-side electrode 9 are fixed to the end of the movable-side conductive shaft 10 that movably penetrates the movable-side sealing fitting 3.

ここで、固定側と同様に、可動側通電軸１０側には円柱状の凸部１０ａが設けられ、可動側電極９側には凸部１０ａが嵌合される円柱状の凹部９ａが設けられ、これらには軸方向と直交する方向に貫通孔１０ｂ、９ｂが設けられている。貫通孔１０ｂ、９ｂには、ステンレスの固定棒１１が挿入されている。凸部１０ａ面と凹部９ａ面は、ろう付けで固定されている。   Here, similarly to the fixed side, a columnar convex portion 10a is provided on the movable side energizing shaft 10 side, and a columnar concave portion 9a into which the convex portion 10a is fitted is provided on the movable side electrode 9 side. These are provided with through holes 10b and 9b in a direction orthogonal to the axial direction. A stainless steel fixing rod 11 is inserted into the through holes 10b and 9b. The convex portion 10a surface and the concave portion 9a surface are fixed by brazing.

可動側通電軸１０の中間部には、伸縮自在のベローズ１２の一方端が封着され、他方端が可動側封着金具３の中央開口部に封着されている、これにより、真空絶縁容器１内の真空を保って、可動側通電軸１０を軸方向に移動させることができる。なお、接点６、８間を包囲するように、筒状のアークシールド１３が真空絶縁容器１内面に固定されている。   One end of the expandable bellows 12 is sealed at the intermediate portion of the movable side energizing shaft 10 and the other end is sealed at the central opening of the movable side sealing fitting 3. The movable-side energizing shaft 10 can be moved in the axial direction while maintaining the vacuum in 1. A cylindrical arc shield 13 is fixed to the inner surface of the vacuum insulating container 1 so as to surround the contacts 6 and 8.

次に、固定側通電軸４と固定側電極５との固定方法を図２を参照して説明する。なお、可動側も同様である。   Next, a method of fixing the fixed side energizing shaft 4 and the fixed side electrode 5 will be described with reference to FIG. The same applies to the movable side.

図２に示すように、先ず、凹部５ａの内周側となる底部に円板状のろう材１４ａを置き、また外周側となる縁部に環状のろう材１４ｂを置き、凹部５ａに凸部４ａを嵌め込む。次に、少なくとも一方を回転させながら、貫通孔４ｂ、５ｂを直線上に一致させ、凹部５ａ外周の貫通孔５ｂ側から固定棒７を貫通させる。固定棒７の長さは、凹部５ａの直径よりも僅かに短い。   As shown in FIG. 2, first, a disk-shaped brazing material 14a is placed on the bottom that is the inner peripheral side of the concave portion 5a, an annular brazing material 14b is placed on the edge that is the outer peripheral side, and a convex portion is formed on the concave portion 5a. Fit 4a. Next, while rotating at least one, the through-holes 4b and 5b are made to correspond on a straight line, and the fixing rod 7 is penetrated from the through-hole 5b side of the outer periphery of the recess 5a. The length of the fixing rod 7 is slightly shorter than the diameter of the recess 5a.

これにより、固定側通電軸４と固定側電極５とを有する固定側部材の部分組立てをすることができる。そして、可動側部材を合せた全体組立て時にろう材１４ａ、１４ｂを溶融させ、凸部４ａと凹部５ａをろう付けする。   Thereby, the partial assembly of the stationary member having the stationary energizing shaft 4 and the stationary electrode 5 can be performed. Then, the brazing materials 14a and 14b are melted at the time of the entire assembly including the movable side members, and the convex portions 4a and the concave portions 5a are brazed.

貫通孔４ｂ、５ｂを設ける位置を予め設定しておけば、固定側電極５を固定側通電軸４の所定の位置に確実に固定することができる。また、電流遮断時に磁界を発生するようなコイル状やスリット状の固定側電極５を用いても、固定棒７で強固に固定されているので、充分なる固定強度を有する。   If the positions where the through holes 4 b and 5 b are provided are set in advance, the fixed side electrode 5 can be reliably fixed to a predetermined position of the fixed side energizing shaft 4. Further, even if a coiled or slit-shaped stationary electrode 5 that generates a magnetic field when current is interrupted is firmly fixed by the fixing rod 7, it has sufficient fixing strength.

また、図示のように、固定側電極５が下側に位置する場合、全体組立てのろう付け時に、自重で固定側電極５が落下および位置ずれを起こそうとするが、固定棒７で固定されているので、このような事象を防ぐことができる。可動側では、可動側電極９が上側に位置して浮こうとするが、これを防止することができる。   Further, as shown in the figure, when the fixed side electrode 5 is positioned on the lower side, the fixed side electrode 5 tends to fall and be displaced due to its own weight when brazing the entire assembly. Therefore, such an event can be prevented. On the movable side, the movable electrode 9 is positioned on the upper side and tends to float, but this can be prevented.

なお、固定側接点６、可動側接点８は、事前に例えば高温ろう材で固定側電極５、可動側電極９に固定され、一体化されているものとし、全体組立て時にはろう付けを不要とする。このようなことから、ここでは、固定側接点６と固定側電極５を合わせて単に固定側接点、可動側接点８と可動側電極９を合わせて単に可動側接点と称する。   The fixed side contact 6 and the movable side contact 8 are previously fixed to the fixed side electrode 5 and the movable side electrode 9 with, for example, a high temperature brazing material and integrated, so that brazing is not required during the entire assembly. . For this reason, here, the fixed contact 6 and the fixed electrode 5 are simply referred to as a fixed contact, and the movable contact 8 and the movable electrode 9 are simply referred to as a movable contact.

上記実施例１の真空バルブによれば、通電軸４、１０側に凸部４ａ、１０ａ、電極５、９側に凹部５ａ、９ａを設け、ろう材１４ａ、１４ｂを挟んで、貫通孔４ｂ、５ｂ、９ｂ、１０ｂに固定棒７、１１を挿入して部分組立てを行っているので、通電軸４、１０と電極５、９との固定強度を確保でき、その位置合せを確実なものとすることができる。また、全体組立て時にろう材１４ａ、１４ｂが溶融しても、電極５、９の移動を防止することができる。   According to the vacuum valve of Example 1 above, the energizing shafts 4 and 10 are provided with convex portions 4a and 10a, the electrodes 5 and 9 are provided with concave portions 5a and 9a, and the brazing materials 14a and 14b are sandwiched between the through holes 4b, Since the fixing rods 7 and 11 are inserted into the 5b, 9b and 10b and the partial assembly is performed, the fixing strength between the current-carrying shafts 4 and 10 and the electrodes 5 and 9 can be secured, and the alignment is ensured. be able to. Further, even if the brazing filler metals 14a and 14b are melted during the entire assembly, the movement of the electrodes 5 and 9 can be prevented.

次に、本発明の実施例２に係る真空バルブを図３を参照して説明する。図３は、本発明の実施例２に係る真空バルブの製造方法を説明する拡大断面図である。なお、この実施例２が実施例１と異なる点は、電極と通電軸の固定方法である。図３において、実施例１と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。なお、固定側と可動側は同様であり、固定側を用いて説明する。   Next, a vacuum valve according to Embodiment 2 of the present invention will be described with reference to FIG. FIG. 3 is an enlarged cross-sectional view illustrating a method for manufacturing a vacuum valve according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment in the method of fixing the electrode and the current-carrying shaft. In FIG. 3, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The fixed side and the movable side are the same, and the description will be made using the fixed side.

図３（ａ）に示すように、固定側通電軸４の凸部４ａの先端部が固定側電極５の凹部５ａの底部に当接する前に、貫通孔４ｂ、５ｂが直線上に一致するように、少なくとも一方の貫通孔４ｂ、５ｂの位置を図示上下方向に僅かにずらしている。直線上に一致したとき、貫通棒７を挿入する。固定棒７は、実施例１よりも僅かに長いものを用いる。   As shown in FIG. 3 (a), the through holes 4b and 5b are aligned on a straight line before the tip of the convex portion 4a of the fixed-side energizing shaft 4 contacts the bottom of the concave portion 5a of the fixed-side electrode 5. In addition, the position of at least one of the through holes 4b and 5b is slightly shifted in the vertical direction in the figure. When they are aligned on a straight line, the penetrating bar 7 is inserted. The fixing rod 7 is slightly longer than that of the first embodiment.

そして、図３（ｂ）に示すように、固定側通電軸４を固定側電極５の方向に所定寸法だけ押し込み、固定棒７を塑性変形させる。即ち、固定側通電軸４と固定側電極５の少なくとも一方を軸方向に移動させる。塑性変形した固定棒７は、抜け防止となる。その後、全体組立て時にろう材１４ａ、１４ｂを溶融させる。   Then, as shown in FIG. 3B, the fixed-side energizing shaft 4 is pushed by a predetermined dimension in the direction of the fixed-side electrode 5, and the fixed rod 7 is plastically deformed. That is, at least one of the fixed-side energizing shaft 4 and the fixed-side electrode 5 is moved in the axial direction. The plastically deformed fixing rod 7 is prevented from coming off. Thereafter, the brazing filler metals 14a and 14b are melted during the entire assembly.

上記実施例２の真空バルブによれば、実施例１による効果のほかに、固定側電極５を固定側通電軸４により強固に固定することができる。   According to the vacuum valve of the second embodiment, in addition to the effects of the first embodiment, the fixed side electrode 5 can be firmly fixed by the fixed side energizing shaft 4.

次に、本発明の実施例３に係る真空バルブを図４を参照して説明する。図４は、本発明の実施例３に係る真空バルブの製造方法を説明する拡大断面図である。なお、この実施例３が実施例１と異なる点は、電極と通電軸の固定方法である。図４において、実施例１と同様の構成部分においては、同一符号を付し、その詳細な説明を省略する。なお、固定側と可動側は同様であり、固定側を用いて説明する。   Next, a vacuum valve according to Embodiment 3 of the present invention will be described with reference to FIG. FIG. 4 is an enlarged cross-sectional view for explaining a vacuum valve manufacturing method according to Embodiment 3 of the present invention. The third embodiment differs from the first embodiment in the method of fixing the electrode and the current-carrying shaft. In FIG. 4, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. The fixed side and the movable side are the same, and the description will be made using the fixed side.

図４（ａ）に示すように、固定側通電軸４の凸部４ａを固定側電極５の凹部５ａに嵌め込み、貫通孔４ｂ、５ｂを直線上に一致させ、固定棒７を挿入する。固定棒７は、実施例１よりも僅かに長いものを用いる。そして、図４（ｂ）に示すように、固定側通電軸４を反時計方向に所定角度回転させ、固定棒７を塑性変形させる。即ち、固定側通電軸４と固定側電極５の少なくとも一方を円周方向に移動させる。その後、全体組立て時にろう材を溶融させる。   As shown in FIG. 4A, the convex portion 4a of the fixed-side energizing shaft 4 is fitted into the concave portion 5a of the fixed-side electrode 5, the through holes 4b and 5b are aligned on a straight line, and the fixing rod 7 is inserted. The fixing rod 7 is slightly longer than that of the first embodiment. Then, as shown in FIG. 4B, the fixed-side energizing shaft 4 is rotated counterclockwise by a predetermined angle, and the fixed rod 7 is plastically deformed. That is, at least one of the fixed-side energizing shaft 4 and the fixed-side electrode 5 is moved in the circumferential direction. Thereafter, the brazing material is melted during the entire assembly.

上記実施例３の真空バルブによれば、実施例１による効果のほかに、固定側電極５を固定側通電軸４により強固に固定することができる。   According to the vacuum valve of the third embodiment, in addition to the effects of the first embodiment, the fixed side electrode 5 can be firmly fixed by the fixed side energizing shaft 4.

なお、本発明は、上記実施例に限定されるものではなく、発明の要旨を逸脱しない範囲で、種々変形して実施することができる。上記実施例では、固定棒７、１１にステンレスを用いて説明したが、全体組立てに用いるろう材よりも溶融温度の高い銅材や高温ろう材を用いることができる。この場合、実施例２、３では、塑性変形を容易に行うことができる。   In addition, this invention is not limited to the said Example, In the range which does not deviate from the summary of invention, it can implement in various deformation | transformation. In the above embodiment, the fixing rods 7 and 11 have been described using stainless steel, but a copper material or a high-temperature brazing material having a melting temperature higher than that of the brazing material used for the entire assembly can be used. In this case, in Examples 2 and 3, plastic deformation can be easily performed.

また、通電軸４、１０側に円柱状の凸部４ａ、１０ａを設け、電極５、９側に凹部５ａ、９ａを設けて説明したが、凸凹の形状を逆にしてもよく、更には、形状を円錐状や半球状などにしてもよい。   In addition, the cylindrical convex portions 4a and 10a are provided on the energizing shafts 4 and 10 side, and the concave portions 5a and 9a are provided on the electrodes 5 and 9 side, but the shape of the concave and convex portions may be reversed. The shape may be conical or hemispherical.

以上述べたような実施形態によれば、部分組立て時において、通電軸に、接点を有する電極を、所定の位置に強固に固定することができる。また、全体組立て時のろう付け時に、電極の落下やずれを防止することができる。   According to the embodiment as described above, the electrode having a contact can be firmly fixed to a predetermined position on the energizing shaft at the time of partial assembly. In addition, it is possible to prevent the electrodes from dropping and shifting during brazing during the entire assembly.

以上において幾つかの実施形態を述べたが、これらの実施形態は、単に例として示したもので、本発明の範囲を限定することを意図したものではない。実際、ここにおいて述べた新規な構成および方法は、種々の他の形態に具体化されてもよいし、さらに、本発明の主旨またはスピリットから逸脱することなく、ここにおいて述べた構成および方法の形態における種々の省略、置き換えおよび変更を行ってもよい。付随する請求項およびそれらの均等物または均等方法は、本発明の範囲および主旨またはスピリットに入るようにそのような形態若しくは変形を含むことを意図している。   Several embodiments have been described above, but these embodiments are merely given as examples and are not intended to limit the scope of the present invention. Indeed, the novel configurations and methods described herein may be embodied in various other forms, and further, without departing from the spirit or spirit of the present invention. Various omissions, substitutions and changes may be made. The appended claims and their equivalents or equivalent methods are intended to include such forms or modifications as fall within the scope and spirit or spirit of the invention.

１ 真空絶縁容器
２ 固定側封着金具
３ 可動側封着金具
４ 固定側通電軸
４ａ、１０ａ 凸部
４ｂ、５ｂ、９ｂ、１０ｂ 貫通孔
５ 固定側電極
５ａ、９ａ 凹部
６ 固定側接点
７、１１ 固定棒
８ 可動側接点
９ 可動側電極
１０ 可動側通電軸
１２ ベローズ
１３ アークシールド
１４ａ、１４ｂ ろう材 DESCRIPTION OF SYMBOLS 1 Vacuum insulating container 2 Fixed side sealing metal fitting 3 Movable side sealing metal fitting 4 Fixed side electricity supply shaft 4a, 10a Protruding part 4b, 5b, 9b, 10b Through-hole 5 Fixed side electrode 5a, 9a Recessed part 6 Fixed rod 8 Movable side contact 9 Movable side electrode 10 Movable side energizing shaft 12 Bellows 13 Arc shields 14a and 14b Brazing material

Claims (6)

接離自在の一対の接点と、
前記接点が固着される通電軸とを有する真空バルブにおいて、
前記接点端部と前記通電軸端部とには、一方に凸部、他方に凹部が設けられ、
この凸部と凹部とには、それぞれ貫通孔が設けられ、
これらの貫通孔には、固定棒が挿入され、
前記凸部と前記凹部間が固定されていることを特徴とする真空バルブ。 A pair of detachable contacts;
In a vacuum valve having a current-carrying shaft to which the contact is fixed,
The contact end portion and the energizing shaft end portion are provided with a convex portion on one side and a concave portion on the other side,
Each of the convex part and the concave part is provided with a through hole,
A fixing rod is inserted into these through holes,
A vacuum valve characterized in that a space between the convex portion and the concave portion is fixed. 前記接点は、電流遮断時に磁界を発生することを特徴とする請求項１に記載の真空バルブ。   The vacuum valve according to claim 1, wherein the contact generates a magnetic field when current is interrupted. 接離自在の一対の接点と、
前記接点が固着される通電軸とを有する真空バルブの製造方法において、
前記接点端部と前記通電軸端部とには、一方に凸部、他方に凹部が設けられ、
この凸部と凹部とには、それぞれ貫通孔が設けられ、
先ず、前記凸部と前記凹部間にろう材を挟んで嵌合し、
次に、前記それぞれの貫通孔の位置を一致させた後、固定棒を挿入し、
前記ろう材を溶融させて前記凸部と前記凹部間をろう付けしたことを特徴とする真空バルブの製造方法。 A pair of detachable contacts;
In a manufacturing method of a vacuum valve having an energizing shaft to which the contact is fixed,
The contact end portion and the energizing shaft end portion are provided with a convex portion on one side and a concave portion on the other side,
Each of the convex part and the concave part is provided with a through hole,
First, a brazing material is sandwiched between the convex part and the concave part,
Next, after aligning the positions of the respective through holes, a fixing rod is inserted,
A method for manufacturing a vacuum valve, wherein the brazing material is melted to braze between the convex portion and the concave portion. 前記接点、前記通電軸の少なくとも一方を軸方向に移動させ、前記固定棒を塑性変形させたことを特徴とする請求項３に記載の真空バルブの製造方法。   4. The method of manufacturing a vacuum valve according to claim 3, wherein at least one of the contact and the energizing shaft is moved in the axial direction to plastically deform the fixing rod. 前記接点、前記通電軸の少なくとも一方を円周方向に移動させ、前記固定棒を塑性変形させたことを特徴とする請求項３に記載の真空バルブの製造方法。   4. The method for manufacturing a vacuum valve according to claim 3, wherein at least one of the contact and the energizing shaft is moved in a circumferential direction to plastically deform the fixing rod. 前記固定棒は、前記ろう材よりも溶融温度が高いことを特徴とする請求項３乃至請求項５のいずれか１項に記載の真空バルブの製造方法。   The method for manufacturing a vacuum valve according to claim 3, wherein the fixing rod has a melting temperature higher than that of the brazing material.
JP2010157236A 2010-07-09 2010-07-09 Manufacturing method of vacuum valve Expired - Fee Related JP5563914B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5286667U (en) * 1975-12-24 1977-06-28
JPS63196539U (en) * 1987-06-08 1988-12-19
JP2002245907A (en) * 2001-02-14 2002-08-30 Hitachi Ltd Electrode for vacuum valve, method of manufacturing the electrode, vacuum valve, vacuum breaker, and electric contact for vacuum valve electrode

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5286667U (en) * 1975-12-24 1977-06-28
JPS63196539U (en) * 1987-06-08 1988-12-19
JP2002245907A (en) * 2001-02-14 2002-08-30 Hitachi Ltd Electrode for vacuum valve, method of manufacturing the electrode, vacuum valve, vacuum breaker, and electric contact for vacuum valve electrode

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