JP4078820B2 - Sealed contact device - Google Patents

Sealed contact device Download PDF

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Publication number
JP4078820B2
JP4078820B2 JP2001289035A JP2001289035A JP4078820B2 JP 4078820 B2 JP4078820 B2 JP 4078820B2 JP 2001289035 A JP2001289035 A JP 2001289035A JP 2001289035 A JP2001289035 A JP 2001289035A JP 4078820 B2 JP4078820 B2 JP 4078820B2
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Japan
Prior art keywords
plate
gas vent
contact device
edge
sealed
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JP2003100189A (en
Inventor
幸二 ▲高▼見
保幸 桝井
秀和 吉岡
浩史 今谷
浩二 馬杉
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Omron Corp
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Omron Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • H01H2050/025—Details concerning sealing, e.g. sealing casing with resin containing inert or dielectric gasses, e.g. SF6, for arc prevention or arc extinction

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Description

【０００１】
【発明の属する技術分野】
本発明は、封止接点装置、特に、パワー負荷用リレーあるいは電磁開閉器等に適した封止接点装置に関する。
【０００２】
【従来の技術】
従来、封止接点装置としては図１０に図示した封止接点装置がある。
すなわち、図１０に示す封止接点装置は、コイル１を巻回したスプール２の中心孔２ａに有底筒体３を挿入するとともに、前記有底筒体３の上方開口縁部を板状磁性材４に気密接合してある。さらに、前記板状磁性材４の上面縁部に接続一体化した環状の接続部材５の上方開口縁部に箱形状の封止容器６をロウ付けすることにより、内部空間７が密閉されている。前記内部空間７のうち、その上方には接点機構部８を配置してある。
【０００３】
【発明が解決しようとする課題】
しかしながら、前述の封止接点装置によれば、薄肉の前記接続部材５の側面に、前記内部空間７に連通するガス抜きパイプ９が側方に突出するように溶接一体化されている。このため、前記封止接点装置の最大外形寸法が大きくなり、スペースを有効に利用できない。
また、前記ガス抜きパイプ９が側方に突出しているので、他の機器に衝突して破損しやすく、気密性を失いやすい。
さらに、薄肉の接続部材５にガス抜きパイプ９を溶接一体化する必要があるので、溶接作業に手間がかかり、熟練を要するという問題点がある。
【０００４】
本発明は、前記問題点に鑑み、外形寸法が小さく、スペースを有効利用できるとともに、気密性の確保および生産が容易な封止接点装置を提供することにある。
【０００５】
【課題を解決するための手段】
本発明にかかる封止接点装置は、前記目的を達成すべく、板状磁性材の上面縁部に、板状接続部材の上下に貫通する開口部を除いて残る外周縁部を溶接一体化し、前記板状接続部材の前記開口部の開口縁部に環状リブを上方に突設するとともに、前記環状リブに箱形状の封止容器を接続一体化して密封した内部空間に接続機構部を組み込む一方、前記板状磁性材の縁部近傍に設けたガス抜き孔にガス抜きパイプを下方側から接続する封止接点装置において、前記ガス抜き孔の上方開口縁部に、一方側が前記内部空間に連通するとともに、他方側が前記板状接続部材の外周縁部に被覆され、かつ、前記ガス抜きパイプに連通する座ぐり穴を、設けた構成としてある。
【０００６】
したがって、本発明によれば、板状磁性材の下面縁部からガス抜きパイプが下方に向けて突出しているので、最大外形寸法が大きくならず、スペースを有効に利用できる。
また、ガス抜きパイプが板状磁性材の下面側に位置することになり、他の機器に衝突する可能性が低くなり、ガス抜きパイプが破損しにくいので、気密性を確保しやすい。
さらに、ガス抜きパイプを板状磁性材のガス抜き孔に接続しているので、接続作業が容易であり、熟練を必要としない。
そして、ガス抜き孔の上方開口縁部に座ぐり穴を設けてあるので、接続部材でガス抜き孔が被覆されても、内部空間の脱気および不活性ガスの注入を行うことができる。このため、ガス抜き孔の位置を任意に選定でき、設計の自由度が広がる。
【０００７】
また、本実施形態としては、略方形の板状磁性材の隅部にガス抜き孔を設けておいてもよい。
本実施形態によれば、ガス抜き孔を方形の板状磁性材の隅部に配置してあるので、デッドスペースを有効に利用できるだけでなく、コイルを方形板状磁性材の４辺の縁部近傍まで巻回でき、高い起磁力が得られる。
【０００８】
さらに、別の実施形態としては、ガス抜きパイプの上端面に、座ぐり穴と略同一深さの切り欠き部を設けておいてもよい。
本実施形態によれば、板状磁性材の座ぐり穴およびガス抜き孔の切り欠き部を介して脱気および不活性ガスの注入を行うことができる。このため、ガス抜きパイプの上端面を接続部材の天井面に当接させて位置決めでき、位置決め作業が容易になる。
【０００９】
さらに、本願の他の発明としては、板状磁性材の上面縁部に、板状接続部材の上下に貫通する開口部を除いて残る外周縁部を溶接一体化し、前記板状接続部材の前記開口部の開口縁部に環状リブを上方に突設するとともに、前記環状リブに箱形状の封止容器を接続一体化して密封した内部空間に接続機構部を組み込む一方、前記板状磁性材の縁部近傍に設けたガス抜き孔にガス抜きパイプを下方側から接続する封止接点装置において、前記板状接続部材の外周縁部のうち、ガス抜き孔の上方に位置する部分に、一方側が前記内部空間に連通し、かつ、他方側が前記ガス抜きパイプに連通する膨出部を、形成した構成としてある。
本発明によれば、接続部材の膨出部を介して脱気および不活性ガスの注入を行うことができる。このため、板状磁性材の上面とガス抜きパイプの上端面とを面一にするだけで位置決め作業が完了するので、組立作業が容易になるという効果がある。
【００１０】
【発明の実施の形態】
本発明にかかる実施形態を図１ないし図９の添付図面に従って説明する。
本発明にかかる封止接点装置の第１実施形態は、図１ないし図５に示すように、駆動機構部１０と、接点機構部３０とから構成されている。そして、駆動機構部１０は、断面略コ字形の第１ヨーク１１と、第１ヨーク１１の両端部に架け渡した板状磁性材からなる第２ヨーク１２との間に、コイル１３を巻回したスプール１４を固定したものである。
【００１１】
前記第１ヨーク１１は、その中央部に設けた挿通孔１１ａにブッシュ形状の補助ヨーク１５を外側から挿入，固定してある。前記補助ヨーク１５の外側にスプール１４の中心孔１４ａを嵌合する一方、前記補助ヨーク１５の内側に有底筒体１６の下方部を挿入してある。前記有底筒体１６の上方開口縁部は前記第２ヨーク１２の下面に気密接合されている。さらに、前記有底筒体１６の底面には、ゴム材からなる衝撃吸収板１７および前記衝撃吸収板１７に後述する可動鉄芯２３が接着することを防止する薄板１８が順次配置されている。
【００１２】
前記第２ヨーク１２の中心孔１２ａに嵌合，固定された固定鉄芯２０が前記有底筒体１６の開口部を閉塞している。そして、前記固定鉄芯２０に設けた貫通孔２０ａには可動軸２１がスライド可能に挿入されている。前記可動軸２１の下端部には復帰バネ２２を介して可動鉄芯２３が固定されている。前記可動鉄芯２３は有底筒体１６内にスライド可能に収納されている。
【００１３】
前記可動軸２１の下端部に固定されている前記可動鉄芯２３は、図２に示す形状を有している。すなわち、前記可動鉄芯２３には、貫通孔２３ｂに連通する一対の溶接孔２３ｃ，２３ｄが同一軸心上に形成されている。前記溶接孔２３ｃ，２３ｄは異なる直径からなる２段形状である。さらに、前記溶接孔２３ｃ，２３ｄの間に位置し、かつ、前記貫通孔２３ｂに連通する仮止め用ネジ孔２３ｅが形成されている。前記溶接孔２３ｃ，２３ｄの最小直径は、レーザ溶接を確実に行うため、可動軸２１の直径よりも小さいことが好ましい。そして、前記貫通孔２３ｂに可動軸２１の下端部を挿入して位置決めした後、仮止め用ネジ孔２３ｅに螺合したボルト（図示せず）で仮止めし、ついで、前記溶接孔２３ｃ，２３ｄからレーザを照射して溶接一体化する。
なお、前記溶接孔２３ｃ，２３ｄは単なるテーパ面であってもよい。また、前記貫通孔２３ｂから突出する可動軸２１の下端部を可動鉄芯２３に溶接一体化してもよい。
【００１４】
一方、前記可動軸２１の上端部には可動接触子２４が配置され、接点機構部３０を構成している。前記可動接触子２４は、可動軸２１の中間部に係止した座金２６ａと、可動軸２１の上端部にカシメ固定した座金２６ｂとの間に配置され、接圧バネ２７によって上方に付勢されている。さらに、前記可動接触子２４の上面の両端部には可動接点２８，２９がそれぞれ設けられている。
【００１５】
前記第２ヨーク１２の上面縁部には、プレス加工によって成形された接続部材３１が溶接一体化されている。すなわち、図３ないし図５に示すように、方形の板状磁性材からなる第２ヨーク１２の中央部には中心孔１２ａが形成され、その隅部にはガス抜き孔１２ｂが形成されている。さらに、前記ガス抜き孔１２ｂの上方開口縁部には座ぐり穴１２ｃが設けられている。
したがって、前記第２ヨーク１２のガス抜き孔１２ｂにガス抜きパイプ３７を挿入して所定の位置で溶接一体化するとともに、前記第２ヨークの上面縁部に接続部材３１を溶接一体化しても、座ぐり穴１２が接続部材３１で完全に被覆されていないので、脱気，ガス注入作業に支障は生じない。
【００１６】
さらに、前記接続部材３１の上方開口縁部にはセラミック等の耐熱性材料からなる箱形状の封止容器３２がロウ付けで一体化されている。前記封止容器３２の天井面には２個の貫通孔３２ａ，３２ｂが設けられ、前記貫通孔３２ａ，３２ｂには円筒状接続材を介して多段有底円筒形状の固定接点端子３３，３４がそれぞれ気密接合されている。前記固定接点端子３３，３４の開口側の内周面には雌ネジ３３ａ，３４ａがそれぞれ設けられている一方、その底側端面には固定接点３５，３６がそれぞれ固着されている。
【００１７】
したがって、有底筒体１６、第２ヨーク１２、接続部材３１、封止容器３２、および、固定接点端子３３，３４を介して密封空間が形成されている。
【００１８】
次に、前述の構成からなる封止接点装置の動作について説明する。
まず、コイル１３に電圧が印加されていない場合には、復帰バネ２２のバネ力で可動鉄芯２３が下方側に付勢され、可動軸２１が下方側に押し下げられている。一方、接圧バネ２７のバネ力で可動接触子２４は上方に付勢されているが、復帰バネ２２のバネ力が接圧バネ２７のバネ力よりも大きいため、可動軸２１が下方側に押し下げられている。このため、可動接触子２４が下方側に引き下げられ、可動接点２８，２９が固定接点からそれぞれ開離している。
【００１９】
ついで、前記コイル１３に電圧を印加して励磁すると、固定鉄芯２０に可動鉄芯２３が吸引され、可動軸２１が復帰バネ２２のバネ力に抗して上方にスライドする。そして、可動接点２８，２９が固定接点３５，３６に接触した後も、接圧バネ２７のバネ力に抗して可動軸２１が押し上げられ、可動軸２１の上端部が可動接触子２４から突出し、可動鉄芯２３が固定鉄心２０に吸着される。
【００２０】
そして、前記コイル１３の励磁を解くと、接圧バネ２７のバネ力よりも大きい復帰バネ２２のバネ力に基づき、可動鉄芯２３が固定鉄芯２０から離れる。このため、可動軸２１が下方側にスライド移動し、可動接点２８，２９が固定接点３５，３６から開離した後、可動鉄芯２３が薄板１８を介して衝撃吸収板１７に当接する。
【００２１】
第２実施形態は、図６および図７に示すように、前述の第１実施形態とほぼ同様であり、異なる点は、ガス抜きパイプ３７の上端縁部に切り欠き部３７ａを形成した点であるる
【００２２】
本実施形態によれば、図７Ｂに示すように、ガス抜きパイプ３７を接続部材３１の天井面に突き当てて組み付けても、前記切り欠き部３７ａおよび座ぐり穴１２ｃを介して脱気作業ができる。このため、ガス抜きパイプ３７の位置決め作業が容易になるという利点がある。他は前述の実施形態と同様であるので、説明を省略する。
【００２３】
第３実施形態は、図８および図９に示すように、接続部材３１のガス抜き孔１２ｂに対応する部分に膨出部３１ａを形成した場合である。他は前述の実施形態とほぼ同様であるので、説明を省略する。
【００２４】
本実施形態よれば、ガス抜きパイプ３７の上端面と第２ヨーク１２の上面とを面一とするだけで、ガス抜き路を確保できるので、ガス抜きパイプ３７の組み付け作業が容易になるという利点がある。
【００２５】
【発明の効果】
本発明によれば、ガス抜き孔の上方開口縁部に座ぐり穴を設けてあるので、接続部材でガス抜き孔が被覆されても、内部空間の脱気および不活性ガスの注入を行うことができる。このため、ガス抜き孔の位置を任意に選定でき、設計の自由度が広がるという効果がある。
【図面の簡単な説明】
【図１】 本発明にかかる封止接点装置の第１実施形態を示し、図Ａは正面図、図Ｂは縦断面図である。
【図２】 図１で示した可動鉄芯を示し、図Ａは斜視図、図Ｂは縦断面図、図Ｃは異なる角度で切断した場合の縦断面図である。
【図３】 図１で示した接点機構部を示し、図Ａは外観斜視図、図Ｂは第２ヨークに接続部材を取り付けた状態を示す外観斜視図である。
【図４】 図３で示した第２ヨーク、接続部材、および、ガス抜きパイプを分解して示す分解斜視図である。
【図５】 図３Ｂで示した第２ヨークおよび接続部材を示し、図Ａは平面図、図Ｂは図ＡのＢ−Ｂ線断面図である。
【図６】 本発明にかかる第２実施形態を示す第２ヨーク、接続部材、および、ガス抜きパイプを分解して示す分解斜視図である。
【図７】 図６で示した第２ヨークおよび接続部材を示し、図Ａは平面図、図Ｂは図ＡのＢ−Ｂ線断面図である。
【図８】 本発明にかかる第３実施形態を示す第２ヨーク、接続部材、および、ガス抜きパイプを分解して示す分解斜視図である。
【図９】 図８で示した第２ヨークおよび接続部材を示し、図Ａは平面図、図Ｂは図ＡのＢ−Ｂ線断面図である。
【図１０】 従来例にかかる封止接点装置を示し、図Ａは縦断面図、図Ｂは斜視図である。
【符号の説明】
１０…駆動機構部、１１…第１ヨーク、１２…第２ヨーク、１２ａ…中心孔、１２ｂ…ガス抜き孔、１２ｃ…座ぐり穴、１３…コイル、１４…スプール、１５…補助ヨーク、１６…有底筒体、１７…衝撃吸収板、２０…固定鉄芯、２１…可動軸、２２…復帰バネ、２３…可動鉄芯、２３ａ…凹部、２３ｂ…貫通孔、２３ｃ，２３ｄ…溶接孔、２３ｅ…仮止め用ネジ孔、２４…可動接触子、２７…接圧バネ、２８，２９…可動接点、３０…接点機構部、３１…接続部材、３１ａ…膨出部、３２…封止容器、３３，３４…固定接点端子、３５，３６…固定接点、３７…ガス抜きパイプ、３７ａ…切り欠き部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sealed contact device, and more particularly to a sealed contact device suitable for a power load relay or an electromagnetic switch.
[0002]
[Prior art]
Conventionally, as the sealed contact device, there is a sealed contact device shown in FIG.
That is, the sealed contact device shown in FIG. 10 inserts the bottomed cylinder 3 into the center hole 2a of the spool 2 around which the coil 1 is wound, and the upper opening edge of the bottomed cylinder 3 has a plate-like magnetic property. The material 4 is hermetically bonded. Furthermore, the internal space 7 is sealed by brazing the box-shaped sealing container 6 to the upper opening edge of the annular connection member 5 connected and integrated with the upper surface edge of the plate-like magnetic material 4. . A contact mechanism 8 is disposed above the internal space 7.
[0003]
[Problems to be solved by the invention]
However, according to the above-described sealed contact device, the gas vent pipe 9 communicating with the internal space 7 is welded and integrated on the side surface of the thin connection member 5 so as to protrude sideways. For this reason, the maximum outer dimension of the sealed contact device is increased, and the space cannot be effectively used.
Further, since the gas vent pipe 9 protrudes to the side, it easily collides with other equipment and breaks, and easily loses airtightness.
Furthermore, since it is necessary to weld and integrate the gas vent pipe 9 to the thin-walled connecting member 5, there is a problem that the welding work takes time and skill is required.
[0004]
In view of the above problems, the present invention provides a sealed contact device that has a small outer dimension, can effectively use a space, and can ensure airtightness and be easily produced.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the sealed contact device according to the present invention welds and integrates the outer peripheral edge portion remaining on the upper surface edge of the plate-like magnetic material except for the openings penetrating up and down of the plate-like connecting member, thereby projecting an annular rib upward opening edge of the opening of the plate-like connecting member, while incorporating the connection mechanism in an internal space sealed by connecting integrated sealing container box shape to said annular rib In the sealed contact device in which a gas vent pipe is connected from the lower side to a gas vent hole provided in the vicinity of the edge of the plate-like magnetic material, one side communicates with the upper opening edge of the gas vent hole and the inner space. In addition, a counterbore hole that is covered on the outer peripheral edge of the plate-like connecting member and communicates with the gas vent pipe is provided.
[0006]
Therefore, according to the present invention, since the degassing pipe protrudes downward from the lower surface edge of the plate-like magnetic material, the maximum outer dimension is not increased, and the space can be used effectively.
Further, since the gas vent pipe is located on the lower surface side of the plate-like magnetic material, the possibility of colliding with other equipment is reduced, and the gas vent pipe is not easily damaged, so that it is easy to ensure airtightness.
Furthermore, since the gas vent pipe is connected to the gas vent hole of the plate-like magnetic material, connection work is easy and skill is not required.
And since the counterbore is provided in the upper opening edge part of a gas vent hole, even if a gas vent hole is coat | covered with a connection member, internal gas can be deaerated and inert gas can be inject | poured. For this reason, the position of the vent hole can be arbitrarily selected, and the degree of freedom of design is expanded.
[0007]
Moreover, as this embodiment, you may provide the vent hole in the corner part of a substantially square plate-shaped magnetic material.
According to the present embodiment, since the vent holes are arranged at the corners of the rectangular plate-shaped magnetic material, not only can the dead space be used effectively, but the coil is also connected to the four side edges of the rectangular plate-shaped magnetic material. It can be wound to the vicinity and high magnetomotive force can be obtained.
[0008]
Furthermore, as another embodiment, a cutout portion having substantially the same depth as the counterbore hole may be provided on the upper end surface of the gas vent pipe.
According to the present embodiment, degassing and inert gas injection can be performed through the counterbore hole of the plate-like magnetic material and the notch portion of the gas vent hole. For this reason, the upper end surface of the degassing pipe can be brought into contact with the ceiling surface of the connection member, and positioning can be facilitated.
[0009]
Furthermore, as another invention of the present application, the outer peripheral edge portion except for the opening penetrating the plate-like connection member is welded and integrated to the upper surface edge of the plate-like magnetic member, and the plate-like connection member thereby projecting an annular rib upward opening edge of the opening, while incorporating the connection mechanism in an internal space sealed by connecting integrated sealing container box shape to said annular rib, the plate-shaped magnetic member In the sealed contact device in which the gas vent pipe is connected from the lower side to the gas vent hole provided in the vicinity of the edge portion, one side of the outer peripheral edge portion of the plate-like connecting member is located above the gas vent hole. the communicated to the internal space, and is a structure in which the other side bulges communicating with the venting pipe, to form.
According to the present invention, degassing and inert gas injection can be performed through the bulging portion of the connecting member. For this reason, since the positioning operation is completed simply by making the upper surface of the plate-like magnetic material and the upper end surface of the gas vent pipe flush, there is an effect that the assembling operation becomes easy.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment according to the present invention will be described with reference to the accompanying drawings of FIGS.
As shown in FIGS. 1 to 5, the first embodiment of the sealed contact device according to the present invention includes a drive mechanism unit 10 and a contact mechanism unit 30. The drive mechanism section 10 winds the coil 13 between the first yoke 11 having a substantially U-shaped cross section and the second yoke 12 made of a plate-like magnetic material spanned on both ends of the first yoke 11. The spool 14 is fixed.
[0011]
The first yoke 11 has a bush-shaped auxiliary yoke 15 inserted and fixed from the outside into an insertion hole 11a provided at the center thereof. While the center hole 14 a of the spool 14 is fitted to the outside of the auxiliary yoke 15, the lower part of the bottomed cylindrical body 16 is inserted inside the auxiliary yoke 15. The upper opening edge of the bottomed cylindrical body 16 is airtightly joined to the lower surface of the second yoke 12. Further, on the bottom surface of the bottomed cylindrical body 16, an impact absorbing plate 17 made of a rubber material and a thin plate 18 for preventing a movable iron core 23 described later from adhering to the impact absorbing plate 17 are sequentially arranged.
[0012]
A fixed iron core 20 fitted and fixed in the center hole 12 a of the second yoke 12 closes the opening of the bottomed cylindrical body 16. A movable shaft 21 is slidably inserted into a through hole 20 a provided in the fixed iron core 20. A movable iron core 23 is fixed to the lower end portion of the movable shaft 21 via a return spring 22. The movable iron core 23 is slidably accommodated in the bottomed cylindrical body 16.
[0013]
The movable iron core 23 fixed to the lower end portion of the movable shaft 21 has a shape shown in FIG. That is, a pair of welding holes 23c and 23d communicating with the through hole 23b are formed in the movable iron core 23 on the same axis. The weld holes 23c and 23d have a two-stage shape having different diameters. Further, a temporary fixing screw hole 23e that is located between the weld holes 23c and 23d and communicates with the through hole 23b is formed. The minimum diameter of the welding holes 23c and 23d is preferably smaller than the diameter of the movable shaft 21 in order to perform laser welding reliably. After the lower end portion of the movable shaft 21 is inserted and positioned in the through hole 23b, it is temporarily fixed with a bolt (not shown) screwed into the temporary fixing screw hole 23e, and then the welding holes 23c, 23d. Irradiate laser to integrate welding.
The weld holes 23c and 23d may be simple taper surfaces. Further, the lower end portion of the movable shaft 21 protruding from the through hole 23b may be integrated with the movable iron core 23 by welding.
[0014]
On the other hand, a movable contact 24 is disposed at the upper end of the movable shaft 21 to constitute a contact mechanism 30. The movable contact 24 is disposed between a washer 26 a locked to an intermediate portion of the movable shaft 21 and a washer 26 b fixed to the upper end of the movable shaft 21, and is urged upward by a contact pressure spring 27. ing. Further, movable contacts 28 and 29 are provided at both ends of the upper surface of the movable contact 24, respectively.
[0015]
A connecting member 31 formed by press working is welded and integrated with the upper surface edge of the second yoke 12. That is, as shown in FIGS. 3 to 5, a central hole 12a is formed at the center of the second yoke 12 made of a rectangular plate-shaped magnetic material, and a gas vent hole 12b is formed at the corner. . Further, a counterbore 12c is provided at the upper opening edge of the gas vent hole 12b.
Accordingly, the degassing pipe 37 is inserted into the degassing hole 12b of the second yoke 12 and welded and integrated at a predetermined position, and the connection member 31 is welded and integrated at the upper edge of the second yoke. Since the counterbore 12 is not completely covered with the connection member 31, there is no problem in the deaeration and gas injection operations.
[0016]
Further, a box-shaped sealing container 32 made of a heat-resistant material such as ceramic is integrated with the upper opening edge of the connection member 31 by brazing. Two through holes 32a and 32b are provided on the ceiling surface of the sealing container 32. Cylindrical fixed contact terminals 33 and 34 having a multi-stage bottom are provided in the through holes 32a and 32b via a cylindrical connecting material. Each is hermetically bonded. Female screws 33a and 34a are respectively provided on the inner peripheral surfaces of the fixed contact terminals 33 and 34 on the opening side, and fixed contacts 35 and 36 are fixed to the bottom end surfaces thereof.
[0017]
Therefore, a sealed space is formed through the bottomed cylindrical body 16, the second yoke 12, the connection member 31, the sealing container 32, and the fixed contact terminals 33 and 34.
[0018]
Next, the operation of the sealed contact device having the above-described configuration will be described.
First, when no voltage is applied to the coil 13, the movable iron core 23 is urged downward by the spring force of the return spring 22, and the movable shaft 21 is pushed downward. On the other hand, the movable contact 24 is biased upward by the spring force of the contact pressure spring 27, but since the spring force of the return spring 22 is larger than the spring force of the contact pressure spring 27, the movable shaft 21 moves downward. Pressed down. For this reason, the movable contact 24 is pulled downward, and the movable contacts 28 and 29 are separated from the fixed contacts, respectively.
[0019]
Next, when a voltage is applied to the coil 13 to excite it, the movable iron core 23 is attracted to the fixed iron core 20 and the movable shaft 21 slides upward against the spring force of the return spring 22. Even after the movable contacts 28 and 29 come into contact with the fixed contacts 35 and 36, the movable shaft 21 is pushed up against the spring force of the contact pressure spring 27, and the upper end portion of the movable shaft 21 protrudes from the movable contact 24. The movable iron core 23 is adsorbed to the fixed iron core 20.
[0020]
When the excitation of the coil 13 is released, the movable iron core 23 moves away from the fixed iron core 20 based on the spring force of the return spring 22 that is larger than the spring force of the contact pressure spring 27. Therefore, after the movable shaft 21 slides downward and the movable contacts 28 and 29 are separated from the fixed contacts 35 and 36, the movable iron core 23 comes into contact with the shock absorbing plate 17 through the thin plate 18.
[0021]
As shown in FIGS. 6 and 7, the second embodiment is substantially the same as the first embodiment described above, except that a notch 37 a is formed at the upper edge of the gas vent pipe 37. There is [0022]
According to the present embodiment, as shown in FIG. 7B, even if the gas vent pipe 37 is assembled by abutting against the ceiling surface of the connection member 31, the deaeration work can be performed through the notch portion 37a and the counterbore 12c. it can. For this reason, there exists an advantage that the positioning operation | work of the degassing pipe 37 becomes easy. Since others are the same as those of the above-described embodiment, description thereof is omitted.
[0023]
As shown in FIGS. 8 and 9, the third embodiment is a case where a bulging portion 31 a is formed in a portion corresponding to the gas vent hole 12 b of the connection member 31. Others are substantially the same as those of the above-described embodiment, and thus the description thereof is omitted.
[0024]
According to the present embodiment, it is possible to secure a gas venting path simply by making the upper end surface of the gas venting pipe 37 and the upper surface of the second yoke 12 flush with each other, so that the assembling work of the gas venting pipe 37 is facilitated. There is.
[0025]
【The invention's effect】
According to the present invention, since the counterbore is provided at the upper opening edge of the gas vent hole, the inner space can be degassed and the inert gas can be injected even if the gas vent hole is covered with the connecting member. Can do. For this reason, there is an effect that the position of the vent hole can be arbitrarily selected and the degree of freedom of design is widened.
[Brief description of the drawings]
1 shows a first embodiment of a sealed contact device according to the present invention, FIG. A is a front view, and FIG. B is a longitudinal sectional view.
2 shows the movable iron core shown in FIG. 1. FIG. A is a perspective view, FIG. B is a longitudinal sectional view, and FIG. C is a longitudinal sectional view when cut at different angles.
3 is a perspective view of the contact mechanism shown in FIG. 1. FIG. A is an external perspective view, and FIG. B is an external perspective view showing a state in which a connecting member is attached to a second yoke.
4 is an exploded perspective view showing the second yoke, the connecting member, and the gas vent pipe shown in FIG. 3 in an exploded manner. FIG.
5A and 5B show the second yoke and the connecting member shown in FIG. 3B, FIG. A is a plan view, and FIG. B is a cross-sectional view taken along line BB in FIG.
FIG. 6 is an exploded perspective view showing a second yoke, a connecting member, and a gas vent pipe in an exploded manner according to the second embodiment of the present invention.
7 shows the second yoke and the connecting member shown in FIG. 6, FIG. A is a plan view, and FIG. B is a cross-sectional view taken along the line BB of FIG.
FIG. 8 is an exploded perspective view showing a second yoke, a connecting member, and a gas vent pipe in an exploded manner according to a third embodiment of the present invention.
9 shows the second yoke and the connecting member shown in FIG. 8, FIG. A is a plan view, and FIG. B is a sectional view taken along line BB of FIG.
FIG. 10 shows a sealed contact device according to a conventional example, FIG. A is a longitudinal sectional view, and FIG. B is a perspective view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Drive mechanism part, 11 ... 1st yoke, 12 ... 2nd yoke, 12a ... Center hole, 12b ... Gas vent hole, 12c ... Counterbore hole, 13 ... Coil, 14 ... Spool, 15 ... Auxiliary yoke, 16 ... Bottomed cylindrical body, 17 ... shock absorbing plate, 20 ... fixed iron core, 21 ... movable shaft, 22 ... return spring, 23 ... movable iron core, 23a ... concave portion, 23b ... through hole, 23c, 23d ... weld hole, 23e DESCRIPTION OF SYMBOLS ... Screw hole for temporary fixing, 24 ... Movable contact, 27 ... Contact pressure spring, 28, 29 ... Movable contact, 30 ... Contact mechanism part, 31 ... Connection member, 31a ... Expansion part, 32 ... Sealing container, 33 , 34 ... fixed contact terminals, 35, 36 ... fixed contacts, 37 ... degassing pipes, 37a ... notches.

Claims (4)

板状磁性材の上面縁部に、板状接続部材の上下に貫通する開口部を除いて残る外周縁部を溶接一体化し、前記板状接続部材の前記開口部の開口縁部に環状リブを上方に突設するとともに、前記環状リブに箱形状の封止容器を接続一体化して密封した内部空間に接続機構部を組み込む一方、前記板状磁性材の縁部近傍に設けたガス抜き孔にガス抜きパイプを下方側から接続する封止接点装置において、
前記ガス抜き孔の上方開口縁部に、一方側が前記内部空間に連通するとともに、他方側が前記板状接続部材の外周縁部に被覆され、かつ、前記ガス抜きパイプに連通する座ぐり穴を、設けたことを特徴とする封止接点装置。The outer peripheral edge remaining except for the openings penetrating up and down of the plate-like connecting member is welded and integrated with the upper edge of the plate-like magnetic material, and an annular rib is formed on the opening edge of the opening of the plate-like connecting member. with upward projecting, while incorporating the connection mechanism in an internal space of the sealed vessel was sealed integrally connected to the box-shape on the annular rib, the gas vent hole provided near the edge of the plate-shaped magnetic member In the sealed contact device for connecting the gas vent pipe from below,
A counterbore hole that is connected to the outer peripheral edge of the plate-like connecting member on one side and the other side on the upper opening edge of the gas vent hole and that communicates with the gas vent pipe. A sealed contact device provided. 略方形の板状磁性材の隅部にガス抜き孔を設けたことを特徴とする請求項１に記載の封止接点装置。  The sealed contact device according to claim 1, wherein a gas vent hole is provided in a corner portion of the substantially square plate-shaped magnetic material. ガス抜きパイプの上端面に、座ぐり穴と略同一深さの切り欠き部を設けたことを特徴とする請求項１または２に記載の封止接点装置。  The sealed contact device according to claim 1, wherein a notch portion having substantially the same depth as the counterbore hole is provided on an upper end surface of the gas vent pipe. 板状磁性材の上面縁部に、板状接続部材の上下に貫通する開口部を除いて残る外周縁部を溶接一体化し、前記板状接続部材の前記開口部の開口縁部に環状リブを上方に突設するとともに、前記環状リブに箱形状の封止容器を接続一体化して密封した内部空間に接続機構部を組み込む一方、前記板状磁性材の縁部近傍に設けたガス抜き孔にガス抜きパイプを下方側から接続する封止接点装置において、
前記板状接続部材の外周縁部のうち、ガス抜き孔の上方に位置する部分に、一方側が前記内部空間に連通し、かつ、他方側が前記ガス抜きパイプに連通する膨出部を、形成したことを特徴とする封止接点装置。The outer peripheral edge remaining except for the openings penetrating up and down of the plate-like connecting member is welded and integrated with the upper edge of the plate-like magnetic material, and an annular rib is formed on the opening edge of the opening of the plate-like connecting member. with upward projecting, while incorporating the connection mechanism in an internal space of the sealed vessel was sealed integrally connected to the box-shape on the annular rib, the gas vent hole provided near the edge of the plate-shaped magnetic member In the sealed contact device for connecting the gas vent pipe from below,
Of the outer peripheral edge of the plate-shaped connecting member, in a portion positioned above the gas release openings, one side is communicated with the internal space, and an expanded portion the other side in communication with the venting pipe, to form A sealed contact device.
JP2001289035A 2001-09-21 2001-09-21 Sealed contact device Expired - Lifetime JP4078820B2 (en)

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