JP2017224541A - Airtight terminal - Google Patents

Airtight terminal Download PDF

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Publication number
JP2017224541A
JP2017224541A JP2016120338A JP2016120338A JP2017224541A JP 2017224541 A JP2017224541 A JP 2017224541A JP 2016120338 A JP2016120338 A JP 2016120338A JP 2016120338 A JP2016120338 A JP 2016120338A JP 2017224541 A JP2017224541 A JP 2017224541A
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metal stem
hole
insulating sleeve
electrode rod
insulating
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JP2017224541A5 (en
JP6715095B2 (en
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大輔 福島
Daisuke Fukushima
大輔 福島
秀彦 原田
Hidehiko Harada
秀彦 原田
浩喜 本田
Hiroki Honda
浩喜 本田
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NEC Schott Components Corp
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NEC Schott Components Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a highly reliable airtight terminal by suppressing the occurrence of cracks on an insulation sleeve.SOLUTION: An airtight terminal 10 comprises: a metal stem 11 having at least one through-hole doubling as a sealing hole; an electrode bar 12 penetrating the metal stem 11; an insulation sleeve 13 having a hollow hole into which the electrode bar 12 on at least one side of the metal stem 11 is inserted and attached; and an insulation material 14 which fills the through-hole of the metal stem 11 so as to fasten the metal stem 11, the electrode bar 12, and the insulation sleeve 13 together. The insulation sleeve 13 has a diameter-reduced part 13a so that a gap is provided, by the diameter-reduced part 13a, between the insulation sleeve 13 and an edge portion of the sealing hole.SELECTED DRAWING: Figure 2

Description

本発明は、密閉したハウジング内に収められた電気機器に信号や電源を供給する目的で、該ハウジングに設けた通孔の周囲に沿って密閉できるように構成した気密端子に関する。   The present invention relates to an airtight terminal configured to be sealed along a periphery of a through-hole provided in the housing for the purpose of supplying a signal and power to an electrical device housed in the sealed housing.

密閉したハウジング内に収められた電気機器に信号や電源を供給する目的で、該ハウジングに設けた通孔の周囲に沿って電気溶接などで密閉できるように構成した気密端子がある。一例として、空調機器や冷凍機などのコンプレッサに使用される気密端子がよく知られている。コンプレッサは、モータユニットのハウジングに設けた取付孔に密閉式に溶接した該気密端子を介して電源からハウジング内のモータに電力供給される。   There is an airtight terminal configured to be sealed by electric welding or the like along a periphery of a through hole provided in the housing for the purpose of supplying a signal or power to an electrical device housed in the sealed housing. As an example, an airtight terminal used for a compressor such as an air conditioner or a refrigerator is well known. The compressor is supplied with electric power from the power source to the motor in the housing through the hermetic terminal hermetically welded to a mounting hole provided in the housing of the motor unit.

特開平０７−３２６４０９号公報JP 07-326409 A

空調機器や冷凍機などのコンプレッサは、内部にモータを有するので、軸受など摺動部の磨耗によって生じた導電性の微粒子が徐々に冷媒中に蓄積してくる。この導電性微粒子が気密端子の金属ステムと電極棒とを絶縁封止するガラスの表面に付着して行くと、金属ステムと電極棒との間の絶縁抵抗が次第に低下し、甚だしい場合は短絡する危険がある。   Since compressors such as air conditioners and refrigerators have a motor inside, conductive fine particles generated due to wear of sliding parts such as bearings gradually accumulate in the refrigerant. When these conductive fine particles adhere to the surface of the glass that insulates and seals the metal stem and electrode rod of the hermetic terminal, the insulation resistance between the metal stem and electrode rod gradually decreases, and in a severe case, a short circuit occurs. There is danger.

こうした事故を防止するために、従来から気密端子の電極棒に絶縁スリーブを設けて、金属ステムと電極棒との沿面距離を大きく取れるようにして金属ステムと電極棒との間の耐トラッキング性を向上させた気密端子がある。例えば、特許文献１に記載された気密端子のように、断面形状が漏斗形を有するセラミック製の絶縁スリーブを、電極棒の封着部に挿着して、金属ステムと電極棒との沿面距離を拡張させた気密端子がある。しかしながら、気密端子のガラスシールは圧縮封止されているため、絶縁スリーブの取り付け部が金属ステムから圧縮応力を受けて、図５の部分断面図に示すように、絶縁スリーブ５３に金属ステム５１の貫通孔のエッジ部から電極棒５２にかけて水平方向のクラック５６が発生し、これが短絡路を形成して絶縁スリーブの耐トラッキング機能が損なわれるという課題があった。   In order to prevent such an accident, conventionally, an insulating sleeve is provided on the electrode rod of the hermetic terminal so that the creeping distance between the metal stem and the electrode rod can be increased, thereby improving the tracking resistance between the metal stem and the electrode rod. There is an improved airtight terminal. For example, like a hermetic terminal described in Patent Document 1, a ceramic insulating sleeve having a funnel-shaped cross section is inserted into a sealing portion of an electrode rod, and the creepage distance between the metal stem and the electrode rod There is an airtight terminal that is expanded. However, since the glass seal of the hermetic terminal is compression-sealed, the mounting portion of the insulating sleeve is subjected to compressive stress from the metal stem, and the insulating sleeve 53 is attached to the insulating sleeve 53 as shown in the partial sectional view of FIG. There is a problem that a horizontal crack 56 is generated from the edge portion of the through hole to the electrode rod 52, which forms a short-circuit path and the tracking resistance function of the insulating sleeve is impaired.

本発明は、絶縁スリーブのクラック発生を抑制して信頼性の高い気密端子を提供することを目的とする。   An object of the present invention is to provide a highly reliable airtight terminal by suppressing the occurrence of cracks in an insulating sleeve.

本発明の第一の形態によると、封着孔を兼ねる少なくとも１個の通孔を備えた金属ステムと、この金属ステムを貫通した電極棒と、中空孔を有しこの中空孔に少なくとも金属ステムの片側の電極棒を挿着した絶縁スリーブと、金属ステムの通孔を充填し金属ステムと電極棒と絶縁スリーブとを固着した絶縁材を備え、該絶縁スリーブは、縮径部を有し、この縮径部によって封着孔のエッジ部分との間に間隙を設けて固着されていることを特徴とする気密端子が提供される。縮径部は、絶縁スリーブを金属ステムに固着したときに、絶縁スリーブが少なくとも金属ステムの封着孔の開口部エッジに触れないように、絶縁スリーブと封着孔の開口部周辺の内周壁との間に間隙を設ける機能を有する。   According to the first aspect of the present invention, the metal stem having at least one through-hole also serving as a sealing hole, the electrode rod penetrating the metal stem, the hollow hole, and at least the metal stem in the hollow hole. An insulating sleeve having the electrode rod on one side thereof inserted therein, and an insulating material filling the through hole of the metal stem and fixing the metal stem, the electrode rod and the insulating sleeve, the insulating sleeve having a reduced diameter portion, An airtight terminal is provided in which the reduced diameter portion is fixed to the edge portion of the sealing hole with a gap. The reduced diameter portion includes an insulating sleeve and an inner peripheral wall around the opening of the sealing hole so that the insulating sleeve does not touch at least the opening edge of the sealing hole of the metal stem when the insulating sleeve is fixed to the metal stem. Has a function of providing a gap between them.

本発明の第二の形態によると、封着孔を兼ねる少なくとも１個の通孔を備えた金属ステムと、この金属ステムを貫通した電極棒と、中空部を有しこの中空部に電極棒を挿通し金属ステムの通孔内に挿入した絶縁環と、中空孔を有しこの中空孔に少なくとも金属ステムの片側の電極棒を挿着しかつ絶縁環に当接した絶縁スリーブと、金属ステムの通孔を充填し金属ステムと電極棒と絶縁環および絶縁スリーブとを固着した絶縁材を備え、該絶縁スリーブは、封着孔のエッジ部分との間に間隙を設けて固着されていることを特徴とする気密端子が提供される。縮径部は、絶縁スリーブを金属ステムに固着したときに、絶縁スリーブが金属ステムの封着孔の内壁面に全く触れないように、絶縁スリーブと封着孔の内周壁との間に間隙を設ける機能を有する。   According to the second aspect of the present invention, the metal stem having at least one through-hole also serving as a sealing hole, the electrode rod penetrating the metal stem, the hollow portion, and the electrode rod in the hollow portion. An insulating ring inserted into the through-hole of the inserted metal stem, a hollow hole, an insulating sleeve having at least one electrode rod of the metal stem inserted into the hollow hole and in contact with the insulating ring; It is provided with an insulating material that fills the through-hole and fixes the metal stem, the electrode rod, the insulating ring, and the insulating sleeve, and the insulating sleeve is fixed with a gap between the edge portion of the sealing hole. A featured airtight terminal is provided. The reduced diameter portion has a gap between the insulating sleeve and the inner peripheral wall of the sealing hole so that the insulating sleeve does not touch the inner wall surface of the sealing hole of the metal stem when the insulating sleeve is fixed to the metal stem. It has a function to provide.

本発明に係る第一の形態の気密端子は、絶縁スリーブに縮径部を有し、この縮径部によって封着孔のエッジ部分との間に間隙を設けたことにより、圧縮応力が集中する金属ステムのエッジ部分を避けて絶縁スリーブを固着することができる。本発明に係る第二の形態の気密端子は、更に第一の形態の絶縁スリーブの一端を絶縁環として分離したもので、絶縁環を設けることで絶縁スリーブに金属ステムの圧縮応力が全く掛からないようにできる。上記形態により絶縁スリーブの応力割れを防止する。   The hermetic terminal according to the first aspect of the present invention has a reduced diameter portion in the insulating sleeve, and a compressive stress is concentrated by providing a gap between the reduced diameter portion and the edge portion of the sealing hole. The insulating sleeve can be fixed while avoiding the edge portion of the metal stem. The hermetic terminal of the second form according to the present invention is obtained by further separating one end of the insulation sleeve of the first form as an insulation ring, and the insulation stress is not applied to the insulation sleeve at all by providing the insulation ring. You can The above-described form prevents stress cracking of the insulating sleeve.

本発明に係る気密端子１０の平面図を示す。The top view of the airtight terminal 10 which concerns on this invention is shown. 本発明に係る気密端子１０を示し、図１のＡ−Ａで一部を切断した正面部分断面図を示す。The airtight terminal 10 which concerns on this invention is shown, and the front fragmentary sectional view which cut | disconnected one part by AA of FIG. 1 is shown. 本発明に係る気密端子１０の下面図を示す。The bottom view of the airtight terminal 10 which concerns on this invention is shown. 気密端子１０を変形した実施例２の気密端子２０の正面部分断面図を示す。The front fragmentary sectional view of the airtight terminal 20 of Example 2 which deform | transformed the airtight terminal 10 is shown. 従来の気密端子に発生した絶縁スリーブのクラック破壊を示した正面部分断面図を示す。The front fragmentary sectional view which showed the crack destruction of the insulation sleeve which generate | occur | produced in the conventional airtight terminal is shown.

本発明に係る気密端子１０は、図１、図２および図３に示すように、封着孔１１ａを兼ねる少なくとも１個の通孔を備えた鉄または鉄合金製の金属ステム１１と、この金属ステム１１を貫通した鉄クロム合金、鉄ニッケル合金、銅芯鉄クロム合金材などの電極棒１２と、中空孔を有しこの中空孔に少なくとも金属ステム１１の片側の電極棒１２を挿着した絶縁スリーブ１３と、金属ステム１１の通孔を充填し金属ステム１１と電極棒１２と絶縁スリーブ１３とを固着した絶縁材１４を備え、該絶縁スリーブ１３は、縮径部１３ａを有し、この縮径部１３ａによって封着孔１１ａのエッジ部分との間に間隙を設けて固着されていることを特徴とする。絶縁スリーブ１３の縮径部１３ａは、金属ステムの圧縮応力が集中する封着孔１１ａのエッジ部分に合致するように設けられ、絶縁スリーブ１３を金属ステム１１に固着したときに、絶縁スリーブ１３が少なくとも金属ステム１１の封着孔１１ａの開口部エッジに触れないように、絶縁スリーブ１３と封着孔１１ａの開口部周辺の内周壁との間に間隙を設ける働きをする。絶縁スリーブ１３は、封着端部に縮径部１３ａを有する円筒形ないし円錐台形に成形した耐熱材からなり、例えば、セラミック、ガラスセラミックまたはガラス基材にセラミックフィラーを混ぜた複合材などが好適である。絶縁材１４は、エポキシ樹脂などの封止樹脂またはソーダライムガラス、ホウケイ酸ガラスなどのガラス材からなる。   As shown in FIGS. 1, 2 and 3, an airtight terminal 10 according to the present invention includes a metal stem 11 made of iron or iron alloy having at least one through hole that also serves as a sealing hole 11a, and the metal Insulation in which an electrode rod 12 made of iron-chromium alloy, iron-nickel alloy, copper-core iron-chromium alloy or the like penetrating the stem 11 and a hollow hole are inserted and at least one electrode rod 12 on one side of the metal stem 11 is inserted into the hollow hole. A sleeve 13 and an insulating material 14 filling the through hole of the metal stem 11 and fixing the metal stem 11, the electrode rod 12, and the insulating sleeve 13 are provided. The insulating sleeve 13 has a reduced diameter portion 13a. It is characterized in that a fixed gap is provided between the diameter portion 13a and the edge portion of the sealing hole 11a. The reduced diameter portion 13a of the insulating sleeve 13 is provided so as to coincide with the edge portion of the sealing hole 11a where the compressive stress of the metal stem is concentrated, and when the insulating sleeve 13 is fixed to the metal stem 11, the insulating sleeve 13 is It serves to provide a gap between the insulating sleeve 13 and the inner peripheral wall around the opening of the sealing hole 11a so as not to touch at least the opening edge of the sealing hole 11a of the metal stem 11. The insulating sleeve 13 is made of a heat-resistant material molded into a cylindrical shape or a truncated cone shape having a reduced diameter portion 13a at the sealing end, and for example, a ceramic, a glass ceramic, or a composite material in which a ceramic filler is mixed with a glass substrate is suitable. It is. The insulating material 14 is made of a sealing resin such as an epoxy resin or a glass material such as soda lime glass or borosilicate glass.

本発明に係る気密端子の絶縁スリーブは、封着孔のエッジ部分に接することなく固着できれば、一体成形されたものでも、複数の部材を組み合わせて構成したものであってもよい。   As long as the insulating sleeve of the airtight terminal according to the present invention can be fixed without contacting the edge portion of the sealing hole, the insulating sleeve may be integrally formed or may be configured by combining a plurality of members.

本発明に係る第二の形態の気密端子２０は、図４に示すように、封着孔を兼ねる少なくとも１個の通孔を備えた鉄または鉄合金製の金属ステム１１と、この金属ステム１１を貫通した鉄クロム合金、鉄ニッケル合金、銅芯鉄クロム合金材などの電極棒１２と、中空部を有しこの中空部に電極棒１２を挿通し金属ステム１１の通孔内に挿入した絶縁環１５と、中空孔を有しこの中空孔に少なくとも金属ステム１１の片側の電極棒１２を挿着しかつ絶縁環１５に当接して固着した絶縁スリーブ１３と、金属ステム１１の通孔を充填し金属ステム１１と電極棒１２と絶縁環１５および絶縁スリーブ１３とを固着した絶縁材１４を備え、該絶縁スリーブ１３は、縮径部１３ａを有し、この縮径部１３ａによって封着孔の内壁面との間に間隙を設けて固着されていることを特徴とする。絶縁スリーブ１３は、封着端部に縮径部１３ａを有し円筒形ないし円錐台形に成形する。縮径部１３ａは、金属ステムの圧縮応力が集中する封着孔のエッジ部分から封着端にかけて設けられ、絶縁スリーブ１３を金属ステム１１に固着したときに、絶縁スリーブ１３が金属ステム１１に触れないように、金属ステム１１の封着孔内周壁と絶縁スリーブ１３との間に間隙を設ける機能を有する。絶縁環１５は、第一の形態の絶縁スリーブの一端を分離独立させたもので、製造工程において流動性を有する絶縁材１４が絶縁スリーブ１３の縮径部１３ａに濡れ広がって間隙を塞いでしまわないように絶縁材１４の流動を堰止める蓋の役割をする。絶縁環１５を設けることで絶縁スリーブ１３に金属ステム１１の圧縮応力が全く掛からないようにできる。絶縁環１５および絶縁スリーブ１３は、耐熱材からなり、セラミック、ガラスセラミックまたはガラス基材にセラミックフィラーを混ぜた複合材などが好適である。絶縁材１４は、エポキシ樹脂などの封止樹脂またはソーダライムガラス、ソーダバリウムガラス、ホウケイ酸ガラスなどのガラス材からなる。気密端子２０の平面図は図１と、下面図は図３と共通である。   As shown in FIG. 4, an airtight terminal 20 according to the second embodiment of the present invention includes a metal stem 11 made of iron or iron alloy having at least one through hole that also serves as a sealing hole, and the metal stem 11. An electrode rod 12 made of iron-chromium alloy, iron-nickel alloy, copper-core iron-chromium alloy material, etc. penetrating the metal rod, and a hollow portion. The electrode rod 12 is inserted into the hollow portion and inserted into the through hole of the metal stem 11. The ring 15 has a hollow hole, the insulating sleeve 13 in which at least one electrode rod 12 of the metal stem 11 is inserted into the hollow hole and fixed in contact with the insulating ring 15, and the through hole of the metal stem 11 is filled. A metal stem 11, an electrode rod 12, an insulating ring 15, and an insulating sleeve 13. The insulating sleeve 13 has a reduced diameter portion 13 a, and the reduced diameter portion 13 a provides a sealing hole. A gap is provided between the inner wall and the Characterized in that it is. The insulating sleeve 13 has a reduced diameter portion 13a at the sealing end and is formed into a cylindrical shape or a truncated cone shape. The reduced diameter portion 13a is provided from the edge portion of the sealing hole where the compressive stress of the metal stem is concentrated to the sealing end. When the insulating sleeve 13 is fixed to the metal stem 11, the insulating sleeve 13 touches the metal stem 11. In order to prevent this, the gap between the inner peripheral wall of the sealing hole of the metal stem 11 and the insulating sleeve 13 is provided. The insulating ring 15 is one in which one end of the insulating sleeve of the first form is separated and independent. In the manufacturing process, the insulating material 14 having fluidity wets and spreads on the reduced diameter portion 13a of the insulating sleeve 13 and closes the gap. It acts as a lid to block the flow of the insulating material 14 so as not to occur. By providing the insulating ring 15, the compressive stress of the metal stem 11 can be prevented from being applied to the insulating sleeve 13 at all. The insulating ring 15 and the insulating sleeve 13 are made of a heat-resistant material, and a ceramic, glass ceramic, or a composite material in which a ceramic filler is mixed with a glass base material is preferable. The insulating material 14 is made of a sealing resin such as an epoxy resin or a glass material such as soda lime glass, soda barium glass, or borosilicate glass. The plan view of the airtight terminal 20 is the same as FIG. 1, and the bottom view is the same as FIG.

本発明に係る実施例１の気密端子１０は、図１ないし図３に示されるように、封着孔１１ａを兼ねる３個の通孔を備えた炭素鋼の金属ステム１１と、この金属ステム１１を貫通した鉄クロム合金の電極棒１２と、中空孔を有しこの中空孔に少なくとも金属ステム１１の片側の電極棒１２を挿着したセラミック製の絶縁スリーブ１３と、金属ステム１１の通孔を充填し金属ステム１１と電極棒１２と絶縁スリーブ１３とを固着したソーダバリウムガラスの絶縁材１４を備え、該絶縁スリーブ１３は、縮径部１３ａを有し、この縮径部１３ａによって封着孔のエッジ部分との間に間隙を設けて固着されている。   As shown in FIGS. 1 to 3, the airtight terminal 10 according to the first embodiment of the present invention includes a carbon steel metal stem 11 having three through holes that also serve as sealing holes 11 a, and the metal stem 11. An electrode rod 12 of an iron-chromium alloy penetrating through, a ceramic insulating sleeve 13 having a hollow hole and at least one electrode rod 12 of the metal stem 11 inserted into the hollow hole, and a through hole of the metal stem 11. A soda barium glass insulating material 14 filled with a metal stem 11, an electrode rod 12, and an insulating sleeve 13 fixed thereto is provided. The insulating sleeve 13 has a reduced diameter portion 13a, and a sealing hole is formed by the reduced diameter portion 13a. It is fixed with a gap between the edge portion.

本発明に係る実施例２の気密端子２０は、実施例１の絶縁スリーブを絶縁スリーブ本体と絶縁環の２つの部品に分離させたもので、図４の正面部分断面図に示されるように、着孔を兼ねる３個の通孔を備えたステンレス鋼の金属ステム１１と、この金属ステム１１を貫通した鉄ニッケル合金の電極棒１２と、中空部を有しこの中空部に電極棒１２を挿通しこれを金属ステム１１の通孔内に挿入したセラミック製の絶縁環１５と、中空孔を有しこの中空孔に少なくとも金属ステム１１の片側の電極棒１２を挿着し更に絶縁環１５に当接したセラミック製の絶縁スリーブ１３と、金属ステム１１の通孔を充填し金属ステム１１と電極棒１２と絶縁環１５および絶縁スリーブ１３とを固着した絶縁材１４を備え、該絶縁スリーブ１３は、縮径部１３ａを有し、この縮径部１３ａによって封着孔の内壁面との間に間隙を設けて固着されている。この気密端子２０の平面図は図１と、下面図は図３と同一である。   The hermetic terminal 20 of Example 2 according to the present invention is obtained by separating the insulating sleeve of Example 1 into two parts, an insulating sleeve body and an insulating ring, as shown in the front partial cross-sectional view of FIG. A stainless steel metal stem 11 having three through holes that also serve as a hole, an iron-nickel alloy electrode rod 12 penetrating the metal stem 11, and a hollow portion. The electrode rod 12 is inserted into the hollow portion. A ceramic insulating ring 15 inserted into the through hole of the metal stem 11 and a hollow hole, and at least one electrode rod 12 of the metal stem 11 is inserted into the hollow hole, and further contacted with the insulating ring 15. An insulating sleeve 13 made of ceramic, and an insulating material 14 filling the through hole of the metal stem 11 and fixing the metal stem 11, the electrode rod 12, the insulating ring 15 and the insulating sleeve 13, Reduced diameter part 13 It has been secured by providing a gap between the inner wall surface of the sealing hole by the reduced diameter portion 13a. The plan view of the airtight terminal 20 is the same as FIG. 1, and the bottom view is the same as FIG.

本発明は、密閉したハウジング内に収められた電気機器に信号や電源を供給する目的で、該ハウジングに設けた通孔に固定できるように構成した大電流対応型の気密端子に有効であり、一例として、冷凍機、空調機器などコンプレッサのモータユニットの気密端子に好適に用いられる。   The present invention is effective for a large current compatible airtight terminal configured to be fixed to a through hole provided in the housing for the purpose of supplying a signal or power to an electric device housed in a sealed housing, As an example, it is suitably used for an airtight terminal of a motor unit of a compressor such as a refrigerator or an air conditioner.

１０,２０・・・気密端子、
１１・・・金属ステム、
１１ａ・・・封着孔、
１２・・・電極棒、
１３・・・絶縁スリーブ、
１３ａ・・・縮径部、
１４・・・絶縁材、
１５・・・絶縁環。
10, 20 ... Airtight terminal,
11 ... Metal stem,
11a: sealing hole,
12 ... Electrode rod,
13 ... Insulating sleeve,
13a ... reduced diameter part,
14 ... Insulating material,
15: Insulating ring.

Claims (2)

封着孔を兼ねる少なくとも１個の通孔を備えた金属ステムと、この金属ステムを貫通した電極棒と、中空孔を有しこの中空孔に少なくとも前記金属ステムの片側の前記電極棒を挿着した絶縁スリーブと、前記金属ステムの通孔を充填し前記金属ステムと前記電極棒と前記絶縁スリーブとを固着した絶縁材を備え、前記絶縁スリーブは、縮径部を有し、この縮径部によって前記封着孔のエッジ部分との間に間隙を設けて固着されていることを特徴とする気密端子。   A metal stem having at least one through-hole also serving as a sealing hole, an electrode rod penetrating the metal stem, and having a hollow hole, and inserting the electrode rod on at least one side of the metal stem into the hollow hole And an insulating material that fills the through hole of the metal stem and fixes the metal stem, the electrode rod, and the insulating sleeve, and the insulating sleeve has a reduced diameter portion. An airtight terminal characterized in that it is fixed with a gap between the sealing hole and the edge portion. 封着孔を兼ねる少なくとも１個の通孔を備えた金属ステムと、この金属ステムを貫通した電極棒と、中空部を有しこの中空部に前記電極棒を挿通し前記金属ステムの通孔内に挿入した絶縁環と、中空孔を有しこの中空孔に少なくとも前記金属ステムの片側の前記電極棒を挿着し更に前記絶縁環に当接して固着した絶縁スリーブと、前記金属ステムの通孔を充填し前記金属ステムと前記電極棒と前記絶縁環および前記絶縁スリーブとを固着した絶縁材を備え、該絶縁スリーブは、縮径部を有し、この縮径部によって前記封着孔の内壁面との間に間隙を設けて固着されていることを特徴とする気密端子。
A metal stem provided with at least one through-hole that also serves as a sealing hole, an electrode rod that penetrates the metal stem, a hollow portion, and the electrode rod is inserted into the hollow portion to pass through the through-hole of the metal stem. An insulating ring inserted into the insulating ring, a hollow hole, an insulating sleeve that is inserted into the hollow hole at least on one side of the metal stem, and is fixed in contact with the insulating ring; and a through hole of the metal stem And an insulating material in which the metal stem, the electrode rod, the insulating ring, and the insulating sleeve are fixed to each other, and the insulating sleeve has a reduced diameter portion, and the inside of the sealing hole is formed by the reduced diameter portion. An airtight terminal characterized by being fixed with a gap between the wall surface.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022102560A1 (en) * 2020-11-12 2022-05-19 株式会社オートネットワーク技術研究所 Terminal block
JP2022079827A (en) * 2020-11-17 2022-05-27 株式会社オートネットワーク技術研究所 Shield connector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022102560A1 (en) * 2020-11-12 2022-05-19 株式会社オートネットワーク技術研究所 Terminal block
JP2022077776A (en) * 2020-11-12 2022-05-24 株式会社オートネットワーク技術研究所 Terminal block
JP7412680B2 (en) 2020-11-12 2024-01-15 株式会社オートネットワーク技術研究所 Terminal block
JP2022079827A (en) * 2020-11-17 2022-05-27 株式会社オートネットワーク技術研究所 Shield connector
WO2022107626A1 (en) * 2020-11-17 2022-05-27 株式会社オートネットワーク技術研究所 Shield connector
JP7412681B2 (en) 2020-11-17 2024-01-15 株式会社オートネットワーク技術研究所 shield connector

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