JP2001176366A - Safety equipment parts and its manufacturing method - Google Patents
Safety equipment parts and its manufacturing methodInfo
- Publication number
- JP2001176366A JP2001176366A JP35452799A JP35452799A JP2001176366A JP 2001176366 A JP2001176366 A JP 2001176366A JP 35452799 A JP35452799 A JP 35452799A JP 35452799 A JP35452799 A JP 35452799A JP 2001176366 A JP2001176366 A JP 2001176366A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- case
- ferrite
- safety device
- resin composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気機器、電気回
路の過電流の防止、異常発熱による発火、火災等の防止
の為に使用されるサーモスタットや温度ヒューズ等の安
全機器部品において、各種素子を包囲するように形成さ
れたケース、チューブ、キャップ形状あるいはその封止
に用いられるディスク、蓋等の外装部品を形成する樹脂
複合体及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device component such as a thermostat and a thermal fuse used for preventing overcurrent of an electric device and an electric circuit, ignition due to abnormal heat generation, and fire. The present invention relates to a resin composite for forming an exterior part such as a case, a tube, a cap, or a disk, a lid, etc. used for sealing or sealing the same, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】従来、サーモスタットに代表される安全
機器部品では、ＯＮ−ＯＦＦ時に発生する電波障害の抑
制用にキャパシタ等の抑制素子が使用されている。とこ
ろが、何年もの使用後のキャパシタの故障あるいは特性
劣化が原因で、電波障害が発生するといった問題があっ
た。英国における電波通信局の調査によると、電波障害
には季節的なピークがあり、頻繁に問題が起きているの
はセントラルヒーティング・ボイラ用サーモスタットで
あることが報告されている（１９９７年ＣＩＳＰＲ横須
賀会議報告；不要電波吸問題対策協議会編）。しかしな
がら、通常、サーモスタット等の安全機器部品に配置さ
れるキャパシタ等の抑制素子の特性劣化、故障の対策と
して、定期的な部品交換によるメンテナンス、あるいは
高品質な抑制素子が求められているが、いずれもコスト
ＵＰとなり現実的ではなかった。2. Description of the Related Art Conventionally, in safety equipment parts represented by thermostats, suppression elements such as capacitors have been used to suppress radio wave interference generated at the time of ON-OFF. However, there has been a problem that radio interference occurs due to failure or deterioration of characteristics of the capacitor after use for many years. According to a survey by the Bureau of Radio Communications in the United Kingdom, radio interference has a seasonal peak, and it is reported that a problem frequently occurs in a thermostat for a central heating boiler (CISPR Yokosuka, 1997). Meeting report; unwanted radio wave absorption problem council edition). However, normally, as a measure against deterioration of characteristics and failure of a suppressor such as a capacitor disposed in a safety device component such as a thermostat, maintenance by periodic component replacement or a high-quality suppressor is required. Was also costly and was not realistic.
【０００３】また、電気機器、電気回路部品に使用され
る安全機器部品のようにアークが発生する場所に使用さ
れる電気絶縁物には、耐熱性、耐難燃性、耐アーク性、
耐トラッキング性、耐絶縁性が要求される。従って、安
全機器部品における各種素子を収納するケースのような
外装部品としては耐熱性、耐難燃性に優れたフェノール
樹脂、エポキシ樹脂等の熱硬化性樹脂に無機物を充填し
た複合材料が多く使用されている。[0003] Electrical insulators used in places where arcs are generated, such as safety equipment parts used in electric equipment and electric circuit parts, include heat resistance, flame resistance, arc resistance, and the like.
Tracking resistance and insulation resistance are required. Therefore, as an exterior part such as a case for storing various elements in a safety device part, a composite material in which a thermosetting resin such as a phenol resin or an epoxy resin, which is excellent in heat resistance and flame resistance, is filled with an inorganic substance is often used. Have been.
【０００４】[0004]
【発明が解決しようとする課題】ところが、上記複合材
料からなる外装部品自体には電波障害を防止する作用が
ないため、放射電波を抑制するためには、電波障害を発
生させる各種素子を配置するケース等の外装部品内部
に、合成ゴムをマトリックスとした電波吸収シートを貼
付する必要があり、この場合、合成ゴムの耐熱性が低
く、長時間高温に曝される電気絶縁物においては使用す
ることができなかったといった問題があった。また、こ
れらに用いられる該複合材料は、一般に樹脂を加熱して
流動性を持たせ所定の金型内に充填し硬化させるといっ
た射出成形法で成形されている。この為、充填材の総量
が著しく制限されており、耐熱性すなわち荷重たわみ温
度が１２０〜１５０℃と低いといった問題があった。さ
らに、樹脂の配合比率が多い樹脂複合体では、高電圧が
印可されると、樹脂の表面が炭化されて導通路が発生
し、この導電路にそって電流がながれてしまうあるい
は、相対密度が低い場合では、成型体内部のボイド内に
発生する放電現象よりトラッキング現象を引き起こし易
く、その耐トラッキング性は１２５Ｖ程度と低い値しか
得られないといった問題があった。However, since the exterior component itself made of the composite material has no function of preventing radio interference, various elements for generating radio interference are arranged in order to suppress radiated radio waves. It is necessary to attach a radio wave absorbing sheet with a synthetic rubber matrix inside the exterior parts such as the case. In this case, the synthetic rubber has low heat resistance and should be used for electrical insulation exposed to high temperatures for a long time. There was a problem that could not be done. Further, the composite materials used for these are generally molded by an injection molding method in which a resin is heated to have fluidity, filled in a predetermined mold and cured. For this reason, the total amount of the filler is extremely limited, and there is a problem that the heat resistance, that is, the deflection temperature under load is as low as 120 to 150 ° C. Further, in a resin composite having a high resin mixing ratio, when a high voltage is applied, the surface of the resin is carbonized to generate a conduction path, and current flows along the conduction path, or the relative density decreases. If it is low, a tracking phenomenon is more likely to occur than a discharge phenomenon occurring in a void inside the molded body, and there is a problem that its tracking resistance can be as low as about 125 V.
【０００５】[0005]
【課題を解決するための手段】そこで本発明者は、上記
課題を解消するために鋭意研究を繰り返したところ、絶
縁体からなる内に各種素子を配置してなる安全機器部品
において、少なくとも前記外装部品を、熱硬化性樹脂
に、フェライト材料、誘電体材料の少なくとも一種以上
を５０〜９０体積％分散含有した樹脂複合体で構成した
ことを特徴とする。また、この樹脂複合体を粉末加圧成
形法にて成形、離型後、所定の温度で加熱硬化すること
で成型することを特徴とする。これにより、キャパシタ
等の破損或いは特性劣化が生じても、電波の漏洩を抑制
出来る安全機器部品を提供するものである。The inventor of the present invention has conducted intensive studies to solve the above-mentioned problems. As a result, at least a part of the safety equipment component in which various elements are arranged in an insulator is provided. The component is characterized by comprising a resin composite in which at least one of a ferrite material and a dielectric material is dispersed and contained in a thermosetting resin by 50 to 90% by volume. Further, the resin composite is molded by a powder pressure molding method, released, and then molded by heating and curing at a predetermined temperature. Thus, even if the capacitor or the like is damaged or its characteristics are deteriorated, it is possible to provide a safety device component that can suppress the leakage of radio waves.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施の形態につい
て詳細に説明する。Embodiments of the present invention will be described below in detail.
【０００７】本発明の安全機器部品の一例であるサーモ
スタットは図１に示す様な構造をとる。すなわち、樹脂
複合体からなるケース２および貫通孔を備えたピンガイ
ド１６で囲まれた容器中に接点開閉機構７を有し、周囲
温度の変化により皿形バイメタル１０が変形することに
より、ピン９が接点開閉機構７を上下させる。これによ
って端子５と６の間を電気が流れたり、止まったりす
る。A thermostat as an example of a safety device component of the present invention has a structure as shown in FIG. That is, a contact opening / closing mechanism 7 is provided in a container surrounded by a resin composite case 2 and a pin guide 16 provided with a through-hole, and the pin 9 Moves the contact opening and closing mechanism 7 up and down. As a result, electricity flows or stops between the terminals 5 and 6.
【０００８】本発明では、上記ケース２、ピンガイド１
６などの外装部品を熱硬化性樹脂にフェライト材料、誘
電体材料のうち少なくとも１種以上を５０〜９０体積％
分散含有した樹脂複合体で形成してある。該樹脂複合体
は粉末加圧成形法を用いて成形、離型後、所定の温度で
加熱硬化して作製することにより、射出成形法では困難
であった充填材の配合比率を９０体積％まで高めること
が出来る。これにより、荷重たわみ温度が１８０℃以上
と耐熱性に優れ、耐トラッキング性（ＣＴＩ）が２５０
Ｖ以上である高い安全性と、放射電波の減衰量が２０ｄ
Ｂ以上の優れた特性を有する電波吸収体として機能し、
電波の漏洩を抑制出来る樹脂複合体からなる外装部品と
することができる。In the present invention, the case 2, the pin guide 1
6 to 50% to 90% by volume of at least one of ferrite material and dielectric material in thermosetting resin
It is formed of a resin composite containing dispersed components. The resin composite is formed by molding using a powder pressure molding method, and after being released from the mold, is heated and cured at a predetermined temperature, so that the mixing ratio of the filler, which has been difficult by the injection molding method, can be increased to 90% by volume. Can be enhanced. Thereby, the deflection temperature under load is excellent at 180 ° C. or higher, and the tracking resistance (CTI) is 250.
V and higher safety and attenuation of radiated radio wave is 20d
It functions as a radio wave absorber with excellent characteristics of B or more,
An exterior component made of a resin composite capable of suppressing radio wave leakage can be provided.
【０００９】充填材の総量を５０〜９０体積％としたの
は、５０体積％以下であると加熱時に、ケース２、ピン
ガイド１６などの外装部品の変形が大きく寸法精度が保
てない上に、耐熱性すなわち、荷重たわみ温度が低くな
ってしまうからである。逆に充填材の配合量が９０体積
％より多くなると、充填材を分散するマトリックスであ
る残部の樹脂が少なくなりすぎて、ケース２、ピンガイ
ド１６などの外装部品の強度が著しく低下する。The reason why the total amount of the filler is set to 50 to 90% by volume is that if it is 50% by volume or less, the external parts such as the case 2 and the pin guide 16 are greatly deformed during heating, and the dimensional accuracy cannot be maintained. This is because the heat resistance, that is, the deflection temperature under load decreases. Conversely, if the amount of the filler is more than 90% by volume, the remaining resin, which is the matrix in which the filler is dispersed, becomes too small, and the strength of the exterior components such as the case 2 and the pin guide 16 is significantly reduced.
【００１０】熱硬化性樹脂に充填材を添加する方法はな
んら制限が無く公知の方法を使用することができる。例
えば、熱硬化性樹脂に配合物をミキサーで混合し、ブラ
ベンダーで混練した後、粉砕する方法。あるいは、配合
物を加熱ロールで溶融混練後、粉砕する方法等が挙げら
れる。また、必要に応じて所定の粒度になるように造粒
し、あるいは分級して成型に用いても良い。さらに、樹
脂と混合した際に、充填材の表面改質を目的としてカッ
プリング剤をコートしても良い。The method of adding the filler to the thermosetting resin is not particularly limited, and a known method can be used. For example, a method in which a compound is mixed with a thermosetting resin with a mixer, kneaded with a Brabender, and then pulverized. Alternatively, a method in which the mixture is melt-kneaded with a heating roll and then pulverized may be used. If necessary, the particles may be granulated to have a predetermined particle size or classified and used for molding. Further, when mixed with a resin, a coupling agent may be coated for the purpose of modifying the surface of the filler.
【００１１】また、加熱硬化の工程は、金型から離型
し、熱処理は８０〜２５０℃の範囲の温度で樹脂の性状
と充填材の配合量に合わせて行う。また、熱処理の際に
は場合によって、型治具を使用しても良い。In the heat curing step, the mold is released from the mold, and the heat treatment is performed at a temperature in the range of 80 to 250 ° C. in accordance with the properties of the resin and the amount of the filler. In the case of heat treatment, a mold jig may be used in some cases.
【００１２】しかしながら、上記以外の一般に知られて
いる樹脂の成型法、すなわち射出成形、トランスファー
成形、熱ロール法、圧延法、熱間プレス法、鋳込み成型
法等の所定の金型内あるいはロールで、樹脂を溶融した
状態で成型すると、上記のようなダレ、膨れ等の成形体
の変形といった不具合は避けられるが、一方、樹脂の流
動性が必要なことから、充填材の総量が著しく制限され
てしまう為、耐熱性、耐トラッキング性、電波吸収特性
の向上は望めず適切な方法でない。However, other generally known resin molding methods other than those described above, ie, injection molding, transfer molding, hot roll method, rolling method, hot pressing method, casting method, etc., are used in a predetermined mold or roll. However, when the resin is molded in a molten state, the above-described problems such as sagging and deformation of the molded body such as swelling can be avoided, but on the other hand, since the fluidity of the resin is required, the total amount of the filler is significantly limited. Therefore, improvement in heat resistance, tracking resistance, and radio wave absorption characteristics cannot be expected and is not an appropriate method.
【００１３】ここで、熱硬化性樹脂に混合するフェライ
ト材料及び誘電体材料は、それぞれ電波吸収特性におけ
る複素比透磁率、複素比誘電率を調整するために含有す
るもので、その含有量を増やすと電波吸収特性に重要な
影響を与える複素比透磁率、複素比誘電率を高めること
ができる。Here, the ferrite material and the dielectric material mixed with the thermosetting resin are included for adjusting the complex relative magnetic permeability and the complex relative permittivity in the radio wave absorption characteristics, respectively, and the contents thereof are increased. In addition, the complex relative magnetic permeability and the complex relative permittivity, which have an important effect on the radio wave absorption characteristics, can be increased.
【００１４】また、無機充填材を混合することも出来、
複素比誘電率の調整、熱伝導率の調整、強度補強、軽量
化を目的として配合される。It is also possible to mix an inorganic filler,
It is blended for the purpose of adjusting the complex relative permittivity, adjusting the thermal conductivity, reinforcing the strength, and reducing the weight.
【００１５】このような樹脂複合体を構成する熱硬化性
樹脂としては、例えば、エポキシ樹脂、フェノール樹
脂、メラミン樹脂、ユリア樹脂、不飽和ポリエステル樹
脂、ポリイミド樹脂が使用出来、これらの中でも耐熱
性、寸法安定性、強度、コスト等の点からフェノール樹
脂が特に好適である。As the thermosetting resin constituting such a resin composite, for example, epoxy resin, phenol resin, melamine resin, urea resin, unsaturated polyester resin, and polyimide resin can be used. Phenolic resins are particularly preferred in terms of dimensional stability, strength, cost and the like.
【００１６】一方、フェライト材料としては例えば、Ｍ
ｎ−Ｚｎ系フェライト、Ｎｉ−Ｚｎ系フェライト、Ｃｕ
−Ｚｎ系フェライト、Ｃｕ−Ｚｎ−Ｍｇフェライト、Ｍ
ｎ−Ｍｇ−Ａｌフェライト、Ｙ型六方晶フェライト、Ｚ
型六方晶フェライト、Ｍ型六方晶フェライト等が好適に
用いられる。On the other hand, as a ferrite material, for example, M
n-Zn ferrite, Ni-Zn ferrite, Cu
-Zn ferrite, Cu-Zn-Mg ferrite, M
n-Mg-Al ferrite, Y-type hexagonal ferrite, Z
Type hexagonal ferrite, M type hexagonal ferrite and the like are preferably used.
【００１７】さらに、誘電体材料としては、誘電率５以
上の材料、例えば、Ａｌ2Ｏ3、ＢａＴｉＯ3、ＣａＴｉ
Ｏ3、ＳｒＴｉＯ3、ＭｇＴｉＯ3、ＰｂＴｉＯ3、ＰＺＴ
（ＰｂＺｒＴｉＯ3）等が好適に用いられる。Further, as the dielectric material, a material having a dielectric constant of 5 or more, for example, Al 2 O 3 , BaTiO 3 , CaTi
O 3 , SrTiO 3 , MgTiO 3 , PbTiO 3 , PZT
(PbZrTiO 3 ) or the like is preferably used.
【００１８】尚、いずれの材料も非常に比重が大きく、
成形体を常圧で熱硬化する際、その温度条件を制御する
ことで、樹脂中に含まれる揮発成分の気化や硬化反応に
伴う生成ガスによって、成形体内部に微細な気孔が発生
するが、熱硬化時の温度をコントロールすることで、気
孔を成形体内部に残留させることができ、相対密度を制
御し軽量化を図ることもできる。ここで、複合体の強度
を維持する観点から樹脂複合体の相対密度は理論密度の
９５％ 以上、好ましくは９７％以上の範囲とする。こ
こで、相対密度が９５％未満になると、樹脂複合体の強
度が著しく低下するため、成形体の肉厚を薄くできず実
用的でない。Each material has a very high specific gravity.
When thermosetting the molded body at normal pressure, by controlling the temperature conditions, gas generated by the vaporization and curing reaction of volatile components contained in the resin generates fine pores inside the molded body, By controlling the temperature at the time of thermosetting, the pores can be left inside the molded body, and the relative density can be controlled to reduce the weight. Here, from the viewpoint of maintaining the strength of the composite, the relative density of the resin composite is 95% or more of the theoretical density, preferably 97% or more. Here, when the relative density is less than 95%, the strength of the resin composite is remarkably reduced, so that the thickness of the molded product cannot be reduced, which is not practical.
【００１９】また、軽量化を目的として、種々の比重の
軽い無機充填材を混合しても良く、シリカ、硅砂、酸化
カルシウム、ガラス繊維、ガラスフレーク、ケイ酸カル
シウム、タルク、クレー、マイカ、カオリン、モンモリ
ロナイト、ベントナイト、活性白土、セピオライト、イ
モゴライト、セリサリト、ガラス繊維、ガラスビーズ、
中空体のガラスバルーンあるいは、シリカバルーン、シ
ラスバルーン等を要求特性に応じて使用できる。For the purpose of weight reduction, various inorganic fillers having a low specific gravity may be mixed. Silica, silica sand, calcium oxide, glass fiber, glass flake, calcium silicate, talc, clay, mica, kaolin , Montmorillonite, bentonite, activated clay, sepiolite, imogolite, serisalito, glass fiber, glass beads,
A hollow glass balloon, a silica balloon, a shirasu balloon, or the like can be used according to required characteristics.
【００２０】また、本発明の樹脂複合体からなる安全機
器部品においては、図２に示す様にケ−ス断面２０を観
察した場合、熱硬化性樹脂２１の中に存在するフェライ
ト材料、誘電体材料、無機充填材からなる充填材２２が
特定方向に配向していないことが好ましい。また、本発
明の樹脂複合体中には気孔２３が存在する。一方、射出
成形、トランスファー成形、熱ロール法、圧延法、熱間
プレス法、鋳込み成形法で作製された電波吸収体では、
例えば図３に示すように、ケ−ス断面２４を観察する
と、熱硬化性樹脂樹脂２５の流動方向への充填材２６の
配向等が発生する。充填材２６の配向は、特にアスペク
ト比が大きいフレーク状、針状、繊維状の充填材で顕著
に現れ、特定の面から入射する電波に対する電波吸収特
性は良好であるが、それ以外の面では、電波吸収特性が
低下し、また機械的強度が低下するという問題があっ
た。本発明の樹脂複合体では、粉末加圧成形によって配
向を無くすことにより、従来の電波吸収体で起きていた
これらの問題を解決できる。Further, in the safety equipment component comprising the resin composite of the present invention, when the case cross section 20 is observed as shown in FIG. It is preferable that the filler 22 composed of the material and the inorganic filler is not oriented in a specific direction. Further, pores 23 exist in the resin composite of the present invention. On the other hand, in radio wave absorbers manufactured by injection molding, transfer molding, hot roll method, rolling method, hot pressing method, and casting method,
For example, as shown in FIG. 3, when the case cross section 24 is observed, the orientation of the filler 26 in the flow direction of the thermosetting resin 25 occurs. The orientation of the filler 26 is particularly remarkable in a flake-like, needle-like, or fibrous filler having a large aspect ratio, and has good radio wave absorption characteristics with respect to radio waves incident from a specific surface. However, there has been a problem that radio wave absorption characteristics are reduced and mechanical strength is reduced. In the resin composite of the present invention, these problems which have occurred in the conventional radio wave absorber can be solved by eliminating the orientation by powder pressure molding.
【００２１】本発明の安全機器部品の使用形態として
は、例えば、図１の様な電気機器、電気回路の過電流の
防止、異常発熱による発火、火災等の防止の為に使用さ
れるサーモスタットや温度ヒューズ等の安全機器部品に
おいて、各種素子を包囲するように形成されたケース、
チューブ、キャップ形状あるいはその封止に用いられる
ディスク、蓋等の外装部品である。The safety device parts of the present invention may be used, for example, as shown in FIG. 1 for a thermostat used to prevent overcurrent of an electric device or an electric circuit, ignition due to abnormal heat generation, fire, and the like. Cases formed to surround various elements in safety device parts such as thermal fuses,
It is an exterior part such as a tube, a cap, or a disk or lid used for sealing the same.
【００２２】[0022]
【実施例】実施例１ フェライト材料の配合量が異なる樹脂複合体を作製し、
０．００１ＧＨｚ〜１ＧＨｚの電波に対する放射電波の
強度を調べる実験を行った。EXAMPLES Example 1 Resin composites containing different amounts of ferrite material were prepared.
An experiment was conducted to check the intensity of the radiated radio wave with respect to the radio wave of 0.001 GHz to 1 GHz.
【００２３】本実験にあたり、樹脂複合体を形成する熱
硬化性樹脂にはレゾール型フェノール樹脂、フェライト
材料にはＮｉ−Ｚｎフェライトを用いた。これらを配合
し、常温で成形圧０．５ｔｏｎ／ｃｍ2〜８ｔｏｎ／ｃ
ｍ2として粉末加圧成形、離型後、８０〜２５０℃で加
熱硬化し、図１に示したケース２、ピンガイド１６を作
製し、成形体の保形性、及び破壊強度を確認した。尚、
試験片の肉厚は、1ｍｍとした。また、破壊強度につい
てはケース２側面に４０ＭＰａの応力をかけ、その破壊
を確認した。破壊しなかったときを○、破壊したときを
×とした。In this experiment, a resol type phenol resin was used as the thermosetting resin forming the resin composite, and Ni-Zn ferrite was used as the ferrite material. These are blended, and the molding pressure is 0.5 ton / cm 2 to 8 ton / c at room temperature.
The powder was press-molded as m 2 , released from the mold, and then heat-cured at 80 to 250 ° C. to produce the case 2 and the pin guide 16 shown in FIG. 1, and the shape retention and breaking strength of the compact were confirmed. still,
The thickness of the test piece was 1 mm. As for the breaking strength, a stress of 40 MPa was applied to the side surface of the case 2, and the breaking was confirmed.と き indicates that the sample was not broken, and X indicates that the sample was broken.
【００２４】次に、得られたケース２、ピンガイド１６
を、サーモスタットのケースとして用いて、放射電界強
度の減衰量を測定した。放射電界強度が減衰したときを
○、全く減衰しなかったときを×とした。また、荷重た
わみ温度（ＪＩＳ Ｋ６９１１）、耐トラッキング性
（ＩＥＣ Ｐｕｂ．１１２−１９７９）の測定、また１
００００回ＯＮ−ＯＦＦを繰り返し、サーモスタットが
故障するまでの作動回数の確認も行った。結果を表１に
示す。Next, the obtained case 2, the pin guide 16
Was used as a thermostat case to measure the attenuation of the radiated electric field intensity. When the radiated electric field intensity was attenuated, it was evaluated as ○, and when it was not attenuated, it was evaluated as x. Measurement of deflection temperature under load (JIS K6911), tracking resistance (IEC Pub. 112-1979),
ON-OFF was repeated 0000 times, and the number of operations until the thermostat failed was also confirmed. Table 1 shows the results.
【００２５】表１で分かる様に、フェライトの含有量が
５０体積％未満（Ｎｏ．１）であると成形体の変形、角
のダレ等の発生あるいは相対密度が低いことから、破壊
強度、耐トラッキングが低い結果となった。また、放射
電波の減衰がほとんど無く不適である。また、フェライ
ト材料の含有量が９０体積％より多い場合（Ｎｏ．２）
は、破壊強度が小さくなりすぎて不適である。また、相
対密度が９５体積％より低い場合（Ｎｏ．３）も、破壊
強度が低いため不適である。また、Ｎｏ．１〜Ｎｏ．３
のサンプルは、熱による変形、破損が原因でサーモスタ
ットとして作動しなかった。As can be seen from Table 1, when the content of ferrite is less than 50% by volume (No. 1), deformation of the molded product, generation of corner sagging, etc., or a low relative density, the fracture strength, Tracking results were low. In addition, there is almost no attenuation of the radiated radio wave, which is inappropriate. When the content of the ferrite material is more than 90% by volume (No. 2)
Is unsuitable because the breaking strength is too small. Also, when the relative density is lower than 95% by volume (No. 3), the breaking strength is low, which is not suitable. In addition, No. 1 to No. Three
The sample did not work as a thermostat due to thermal deformation and breakage.
【００２６】一方、本発明の範囲内（Ｎｏ．４〜Ｎｏ．
６）では、すべて荷重たわみ温度１８０℃以上、耐トラ
ッキング２５０Ｖ以上で且つ放射電波の減衰効果があっ
た。また、１００００回以上ＯＮ−ＯＦＦを繰り返して
も故障せずにサーモスタットとしての機能を維持した。On the other hand, within the scope of the present invention (Nos.
In 6), the deflection temperature under load was 180 ° C. or more, the tracking resistance was 250 V or more, and the radiation electric wave was attenuated. In addition, even if ON-OFF was repeated 10,000 times or more, the function as a thermostat was maintained without failure.
【００２７】[0027]
【表１】 [Table 1]
【００２８】実施例２ フェライト材料としてＭｎ−Ｚｎフェライト、誘電体材
料としてＢａＴｉＯ3、熱硬化性樹脂にエポキシ樹脂
を、均一混合した後、５０℃で３時間撹拌しながら乾燥
して造粒した。これを成形圧２ｔｏｎ／ｃｍ2として常
温で加圧成形し、８０〜２５０℃で加熱硬化し、ケース
２、ピンガイド１６を作製し、実施例１と同様の実験を
行った。Example 2 Mn-Zn ferrite as a ferrite material, BaTiO 3 as a dielectric material, and an epoxy resin as a thermosetting resin were uniformly mixed, dried at 50 ° C. with stirring for 3 hours, and granulated. This was molded under pressure at normal temperature with a molding pressure of 2 ton / cm 2, and was heat-cured at 80 to 250 ° C. to produce a case 2 and a pin guide 16, and the same experiment as in Example 1 was performed.
【００２９】表２で分かる様に、Ｍｎ−Ｚｎフェライト
とＢａＴｉＯ3の含有量の合計が５０体積％未満（Ｎ
ｏ．７）であると成形体の変形、角のダレ等の発生ある
いは相対密度が低いことから、破壊強度、耐トラッキン
グが低い結果となった。また、放射電波の減衰がほとん
ど無く不適である。また、Ｍｎ−ＺｎフェライトとＢａ
ＴｉＯ3の含有量の合計が９０体積％より多い場合（Ｎ
ｏ．８）は、破壊強度が小さくなりすぎて不適である。
また、相対密度が９５体積％より低い場合（Ｎｏ．３）
も、破壊強度が低いため不適である。また、Ｎｏ．１〜
Ｎｏ．３のサンプルは、熱による変形、破損が原因でサ
ーモスタットとして作動しなかった。As can be seen from Table 2, the total content of Mn-Zn ferrite and BaTiO 3 is less than 50% by volume (N
o. In the case of 7), the deformation strength, the occurrence of corner sagging, etc., or the relative density was low, so that the breaking strength and tracking resistance were low. In addition, there is almost no attenuation of the radiated radio wave, which is inappropriate. Also, Mn-Zn ferrite and Ba
When the total content of TiO 3 is more than 90% by volume (N
o. 8) is unsuitable because the breaking strength is too small.
When the relative density is lower than 95% by volume (No. 3)
However, they are unsuitable because of their low breaking strength. In addition, No. 1 to
No. Sample No. 3 did not operate as a thermostat due to thermal deformation and breakage.
【００３０】一方、本発明の範囲内（Ｎｏ．１０〜Ｎ
ｏ．１２）では、すべて荷重たわみ温度１８０℃以上、
耐トラッキング２５０Ｖ以上で且つ放射電波の減衰効果
があった。また、１００００回以上ＯＮ−ＯＦＦを繰り
返しても故障せずにサーモスタットとしての機能を維持
した。On the other hand, within the scope of the present invention (Nos.
o. 12) In all, the deflection temperature under load is 180 ° C or more,
It had a tracking resistance of 250 V or more and had an effect of attenuating radiated radio waves. In addition, even if ON-OFF was repeated 10,000 times or more, the function as a thermostat was maintained without failure.
【００３１】[0031]
【表２】 [Table 2]
【００３２】[0032]
【発明の効果】本発明によれば、熱硬化性樹脂にフェラ
イト材料、誘電体材料を少なくとも１種以上を５０〜９
０体積％分散含有した複合材を、粉末加圧成形法を用い
て成形、離型後、所定の温度で加熱硬化することで、耐
熱性、耐トラッキング性に優れ、且つ電波障害を抑制出
来る電波吸収体として機能する樹脂複合体からなる外装
部品を備えた安全機器部品を提供するものである。According to the present invention, at least one ferrite material and at least one dielectric material are added to the thermosetting resin by 50 to 9%.
A composite material containing 0% by volume of dispersion is molded using a powder pressure molding method, and then heated and cured at a predetermined temperature after release from the composite material, so that it is excellent in heat resistance and tracking resistance and can suppress radio interference. An object of the present invention is to provide a safety device component having an exterior component made of a resin composite functioning as an absorber.
【図１】本発明の安全機器部品の一例であるサーモスタ
ットを示す断面図である。FIG. 1 is a sectional view showing a thermostat as an example of a safety device component of the present invention.
【図２】本発明の安全機器部品の外装部における断面の
模式図である。FIG. 2 is a schematic view of a cross section of an exterior part of the safety device part of the present invention.
【図３】従来の安全機器部品の外装部における断面の模
式図である。FIG. 3 is a schematic diagram of a cross section of an exterior part of a conventional safety device part.
１：サーモスタット ２：ケース ３：スルーホール ４：導電材 ５，６：端子 ７：接点開閉機構 ８：皿形バイメタル ９：ピン １０：キャップ １１：開口縁 １２：環状縁面 １３：内端 １４：外縁 １５：内底面端縁部 １６：ピンガイド ２０：ケース断面 ２１：熱硬化性樹脂 ２２：充填材 ２３：気孔 ２４：ケース断面 ２５：熱硬化性樹脂 ２６：充填材 1: Thermostat 2: Case 3: Through hole 4: Conductive material 5, 6: Terminal 7: Contact opening and closing mechanism 8: Dish-shaped bimetal 9: Pin 10: Cap 11: Opening edge 12: Annular edge 13: Inner end 14: Outer edge 15: Inner bottom edge 16: Pin guide 20: Case cross section 21: Thermosetting resin 22: Filler 23: Pores 24: Case cross section 25: Thermoset resin 26: Filler
Claims (4)
置してなる安全機器部品において、少なくとも前記外装
部品が、熱硬化性樹脂に、フェライト材料、誘電体材料
のうち少なくとも一種以上を５０〜９０体積％分散含有
した樹脂複合体で形成されていることを特徴とする安全
機器部品。1. A safety device component comprising various elements arranged in an exterior component made of an insulator, wherein at least the exterior component is formed by adding at least one of a ferrite material and a dielectric material to a thermosetting resin. A safety device component characterized by being formed of a resin composite containing 90 to 90% by volume of dispersion.
℃以上、耐トラッキング性（ＣＴＩ）が２５０Ｖ以上で
あることを特徴とする安全機器部品。2. The deflection temperature under load of the resin composite is 180.
A safety device component characterized by having a tracking resistance (CTI) of at least 250 ° C. and at least 250 ° C.
あることを特徴とする請求項１、２記載の安全機器部
品。3. The safety equipment part according to claim 1, wherein the relative density of the resin composite is 95% or more.
し、離型後、所定の温度で加熱硬化して所定形状とする
ことを特徴とする請求項１〜３記載の安全機器部品の製
造方法。4. The safety equipment part according to claim 1, wherein said raw material is molded by a powder pressure molding method, and after release, is heat-cured at a predetermined temperature to form a predetermined shape. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35452799A JP4327965B2 (en) | 1999-12-14 | 1999-12-14 | Safety device parts and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35452799A JP4327965B2 (en) | 1999-12-14 | 1999-12-14 | Safety device parts and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001176366A true JP2001176366A (en) | 2001-06-29 |
| JP4327965B2 JP4327965B2 (en) | 2009-09-09 |
Family
ID=18438162
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35452799A Expired - Fee Related JP4327965B2 (en) | 1999-12-14 | 1999-12-14 | Safety device parts and manufacturing method thereof |
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| Country | Link |
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| JP (1) | JP4327965B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7086283B2 (en) * | 2004-07-15 | 2006-08-08 | Riken Keiki Co., Ltd. | Explosion-proof portable gas detector |
| WO2020245910A1 (en) * | 2019-06-04 | 2020-12-10 | ボーンズ株式会社 | Breaker, safety circuit comprising same, and secondary cell circuit |
-
1999
- 1999-12-14 JP JP35452799A patent/JP4327965B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7086283B2 (en) * | 2004-07-15 | 2006-08-08 | Riken Keiki Co., Ltd. | Explosion-proof portable gas detector |
| WO2020245910A1 (en) * | 2019-06-04 | 2020-12-10 | ボーンズ株式会社 | Breaker, safety circuit comprising same, and secondary cell circuit |
| CN113811973A (en) * | 2019-06-04 | 2021-12-17 | 柏恩氏株式会社 | Breaker, safety circuit provided with same, and secondary battery circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4327965B2 (en) | 2009-09-09 |
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