JPS6233514B2 - - Google Patents
Info
- Publication number
- JPS6233514B2 JPS6233514B2 JP4324678A JP4324678A JPS6233514B2 JP S6233514 B2 JPS6233514 B2 JP S6233514B2 JP 4324678 A JP4324678 A JP 4324678A JP 4324678 A JP4324678 A JP 4324678A JP S6233514 B2 JPS6233514 B2 JP S6233514B2
- Authority
- JP
- Japan
- Prior art keywords
- bottomed cup
- adhesive composition
- embolus
- electrical insulation
- detonator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- 230000001070 adhesive effect Effects 0.000 claims description 23
- 238000010292 electrical insulation Methods 0.000 claims description 23
- 208000005189 Embolism Diseases 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000002075 main ingredient Substances 0.000 claims 1
- 229920003051 synthetic elastomer Polymers 0.000 claims 1
- 239000005061 synthetic rubber Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 9
- 230000003068 static effect Effects 0.000 description 9
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 229920000768 polyamine Polymers 0.000 description 3
- DSEKYWAQQVUQTP-XEWMWGOFSA-N (2r,4r,4as,6as,6as,6br,8ar,12ar,14as,14bs)-2-hydroxy-4,4a,6a,6b,8a,11,11,14a-octamethyl-2,4,5,6,6a,7,8,9,10,12,12a,13,14,14b-tetradecahydro-1h-picen-3-one Chemical compound C([C@H]1[C@]2(C)CC[C@@]34C)C(C)(C)CC[C@]1(C)CC[C@]2(C)[C@H]4CC[C@@]1(C)[C@H]3C[C@@H](O)C(=O)[C@@H]1C DSEKYWAQQVUQTP-XEWMWGOFSA-N 0.000 description 2
- NJYFRQQXXXRJHK-UHFFFAOYSA-N (4-aminophenyl) thiocyanate Chemical compound NC1=CC=C(SC#N)C=C1 NJYFRQQXXXRJHK-UHFFFAOYSA-N 0.000 description 2
- 229920012753 Ethylene Ionomers Polymers 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
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- 229920002647 polyamide Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- CBECDWUDYQOTSW-UHFFFAOYSA-N 2-ethylbut-3-enal Chemical compound CCC(C=C)C=O CBECDWUDYQOTSW-UHFFFAOYSA-N 0.000 description 1
- 239000004709 Chlorinated polyethylene Substances 0.000 description 1
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- 235000017899 Spathodea campanulata Nutrition 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- JTHNLKXLWOXOQK-UHFFFAOYSA-N n-propyl vinyl ketone Natural products CCCC(=O)C=C JTHNLKXLWOXOQK-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229940066842 petrolatum Drugs 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
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- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
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- 239000000057 synthetic resin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Landscapes
- Air Bags (AREA)
Description
本発明は、静電気に対して安全な電気雷管に関
するものである。
近年ANFO爆薬の普及に伴い、装填時に発生す
る静電気により不慮の発火を起こし事故になるこ
とがあり、静電気に対する安全性の高い電気雷管
が望まれている。このことから、現在市販されて
いる耐静電気雷管というのは、短絡された脚線と
管体間に静電気が印加された場合（2000PFのコ
ンデンサーにより放電された）発火電圧が8KV以
上とされている。これらの耐静電気雷管について
大きく分類すると、放電型と絶縁型に分けられ
る。前者は、色々な種類のものが考案されている
が主なものを上げると、点火装置の芯線露出部分
に、半導体物質を介在させたものや、導電性被膜
を被覆させたもの、又芯線と管体間に微少間隔を
設けたりすることによつて、静電誘導により蓄積
する電荷を放電させるものなどがある。しかしな
がらこの放電型は構造が複雑となり製造が困難で
あるし、放電がくり返し発生した場合には、そこ
に放電経路が出来て、そこから発火することがあ
る。後者の絶縁型は、点火部近傍を絶縁被覆し、
芯線と管体間に火花放電を生じさせないような構
造ですればよい。これらの方法としては、特願昭
52−79059号のような有底カツプと塞栓の嵌合部
を環状に締結することで、点火装置の電気絶縁度
を向上させるか、実願昭52−164430号のように有
底カツプの周縁垂直内部及び有底カツプ固定部の
外周縁に凸部もしくは凹部を対応させた点火装置
の有底カツプ及び塞栓の嵌合部を環状に締結した
もので点火装置の電気絶縁度を上げるというもの
がある。
しかしながら上記のような点火装置において、
有底カツプと電橋付塞栓の固着強度をある程度高
めることは可能ではあるが、電橋付塞栓と有底カ
ツプの嵌合度合が完全でなければならないとか、
塞栓の有底カツプ嵌合部分が真円に近いものでな
ければ上記の電気絶縁度を満足することはできな
いという欠点がある。
そこで、本発明者らは点火装置の電気絶縁度を
更に上げるための種々の方法と検討した結果、有
底カツプ開口端と塞栓接合部の間を電気絶縁度の
高い粘着組成物でシールすることにより、著しく
電気絶縁度が上昇し従来にない耐静電気性能が得
られることを見出した。
そこで、本発明者らは点火装置の電気絶縁度を
更に上げるための種種の方法を検討した結果、有
底カツプ開口端と塞栓接合部の間を電気絶縁度の
高い粘着組成物でシールすることにより、著しく
電気絶縁度が上昇し従来にない耐静電気性能が得
られることを見出した。
本発明は上記の如き知見に基づいてなされたも
ので、静電気に対して安全な電気雷管を提供する
ことを目的としている。
すなわち、本発明は点火部を封入した有底カツ
プと電橋付塞栓からなる点火装置を原料雷管開口
部に装着し、該点火装置の有底カツプ開口端と塞
栓接合部の間を、電気絶縁度の高い粘着組成物で
シールすることにより、該点火装置が絶縁構造に
された電気雷管で、雷管管体と点火部との間に静
電気が印加された場合に雷管管体と電橋部の間に
生じる火花放電を防止することを特徴としてい
る。
次に、本発明の実施態様を図面に従つて詳述す
る。第１図は本発明に係る電気雷管の代表的な実
施態様を示す一部切欠断面図である。１は円柱状
の塞栓本体であり、塞栓本体１の径より小なる径
の円柱状の管体嵌合部２と有底カツプ嵌合部３を
有している。脚線４及び芯線５ａ，５ｂは塞栓本
体１を貫通し、有底カツプ嵌合部３ａ付近より裸
線となり、脚線４の末端部分は該有底カツプ嵌合
部３の端面に沿つて折り曲げられていて、末端に
至り電橋６が、〓着されている。
有底カツプ７は塞栓本体１の有底カツプ嵌合部
３に嵌合されておりカツプ内部には、ロダン鉛
系、DDNP系等の粉状点火薬８が充填されてい
る。有底カツプ開口端と塞栓接合部１１の間及び
有底カツプ７の外周縁部には電気絶縁度の高い粘
着組成物１０でシールされている。
電気雷管とする場合点火薬を封入した有底カツ
プ７を電橋付塞栓１に装着し、該有底カツプ開口
端と塞栓接合部を、電気絶縁度の高い粘着組成物
１０でシールされた点火装置は、原料雷管の管体
９の開口部に装着され、塞栓本体１の管体嵌合部
が環状に締結されている。Ａは管体締結部分であ
る。
該点火装置は例えば第２図に示すように電橋６
の周囲に膠着された点火玉１４を使用してもよ
く、第３図に示すように有底カツプ７と有底カツ
プ嵌合部３を管体９と同時に環状に締結されてい
てもよい。
また、第４図に示すように、有底カツプ７の周
縁垂直部内側の凹部１３と有底カツプ嵌合部３の
外周縁の凸部１２を設けたものでも良く、更に第
５図のように有底カツプ７の周縁垂直部分内側に
凹部１３を持つ有底カツプ７と、有底カツプ嵌合
部３の外周縁に凸部１２を持つ塞栓を管体９と同
時に環状に締結されたものでもよい。
本発明で云うシールとは、点火部と点火装置外
部との間に粘着組成物１０を介在させることによ
り点火部と点火装置外部を遮断させることを云
い、例えば第１図イ，ロに示すように、該点火装
置を該粘着組成物中に含浸させ被覆することや、
第２図に示すように、有底カツプ開口端と塞栓接
合部１１との間に粘着組成物１０を充填すること
を云う。
ここで云う点火装置外部とは塞栓本体１及び有
底カツプ７の外周縁部分を云う。
本発明の電気雷管に使用する点火装置は、塞栓
と有底カツプと電気絶縁度の高い粘着組成物とか
らなるもので、塞栓は例えば中密度又は高密度ポ
リエチレン、ポリプロピレン、ナイロン、硬質ポ
リ塩化ビニル等の硬質熱可塑性樹脂で射出成型さ
れている。
有底カツプは材質として塞栓との密着性が良
く、かつ原料雷管と結合された時有底カツプ嵌合
部３に密に固着される軟質高分子物質が良く、例
えば低密度ポリエチレン、ビニル・ブチラール樹
脂、エチレン・酢酸ビニル共重合体、エチレン系
アイオノマー、軟質ポリ塩化ビニル、塩素化ポリ
エチレン等が適しており、とくに柔軟性に富み、
かつ射出成型容易なエチレン系アイオノマー、エ
チレン−酢酸ビニル共重合体が好ましい。
本発明では、点火部近傍の芯線５ａ，５ｂと管
体９との間に高い絶縁度を持たせるために、前記
の如く軟質高分子物質の有底カツプ７を使用し、
塞栓本体１の有底カツプ嵌合部３に有底カツプ７
を嵌合させ、更に有底カツプ開口端と塞栓接合部
１１の間を電気絶縁度の高い粘着組成物１０でシ
ールしている。
ここでいう粘着組成物１０とは、電気絶縁度の
高い高分子物質からなる粘着組成物であり、好ま
しくは体積固有抵抗率1012Ω・cm以上の電気絶縁
度を持つたものであり、有底カツプ及び塞栓に使
用される合成樹脂との新和性の高いものが望まし
い。
例えば、電気絶縁度の高い粘着組成物として、
パラフイン、セレシン、ペトロラタム、オゾケラ
イト等のワツクス類、フエノール樹脂−ニトリル
ゴム、エポキシ樹脂、エポキシ樹脂−脂肪族ポリ
アミン、エポキシ樹脂−脂肪族ポリアミン、エポ
キシ樹脂−ポリアミド、エポキシ樹脂−芳香族ア
ミンアダクトシリコン樹脂、ポリブタジエン、ニ
トリルゴム、ポリエステルのジメタクリレート等
の接着剤等があげられ、好ましくはエポキシ樹
脂、エポキシ樹脂−脂肪族ポリアミン、エポキシ
樹脂−ポリアミドが電気絶縁度を上げることが出
来る。
このように構成された本発明の電気雷管は、脚
線の芯線短絡部と管体間に静電気が印加された場
合、有底カツプに電気絶縁度の高い軟質高分子物
質を用い、有底カツプ開口端と塞栓接合部とを電
気絶縁度の高い粘着組成物でシールされているた
め、芯線と原料管体の間に高い電気絶縁度を有し
点火部近傍で火花放電を起こすことなく高い耐静
電気性能を有している。
実施例 １
中密度ポリエチレンにて射出成型した脚線・電
橋付塞栓に、ロダン鉛、塩素酸カリウムからなる
粉状点火薬を充填した、軟質高分子物質のエチレ
ン系アイオノマー樹脂にて射出成型した有底カツ
プを結合し、あらかじめ混合されたエポキシ樹脂
とポリアミド樹脂からなる接着剤を塗布した後、
原料雷管に取付け、第１図に示した電気雷管を試
作した。
その供試雷管の短絡された芯線と管体間に、
2000pFのコンデンサーに充電された０〜25KVの
静電エネルギーを印加し、爆発するか否かを測定
した。その結果、20KVで発火した。又比較例と
して粘着組成物のないものでは5KVで発火した。
実施例 ２
ポリプロピレンにて射出成型した脚線・電橋付
塞栓に、第１表に示す粘着組成物を有底カツプ嵌
合部底面に塗布し、DDNPからなる粉状点火等を
充填した軟質高分子物質のエチレン・酢酸ビニル
共重合体にて射出成型した有底カツプを結合し、
原料雷管に取付け第３〜５図に示した電気雷管を
試作し実施例１と同様に測定した。その結果を第
１表に示す。
The present invention relates to an electric detonator that is safe against static electricity. With the spread of ANFO explosives in recent years, the static electricity generated during loading can cause accidental ignition and accidents, so there is a need for electric detonators that are highly safe against static electricity. For this reason, the anti-static detonators currently on the market are said to have an ignition voltage of 8KV or more when static electricity is applied between the short-circuited leg wire and the tube body (discharged by a 2000PF capacitor). . Broadly speaking, these anti-static detonators can be divided into discharge type and insulation type. Various types of the former have been devised, but the main ones include those in which the exposed core wire of the ignition device is interposed with a semiconductor material, those in which the exposed core wire is coated with a conductive film, and those in which the exposed core wire is coated with a conductive film. There are some types that discharge accumulated charges due to electrostatic induction by providing minute intervals between tube bodies. However, this discharge type has a complicated structure and is difficult to manufacture, and if discharge occurs repeatedly, a discharge path may be created there, which may cause ignition. The latter insulated type has an insulating coating near the ignition part,
Any structure is sufficient as long as it does not cause spark discharge between the core wire and the tube body. These methods include
The degree of electrical insulation of the ignition device can be improved by tightening the fitting part of the bottomed cup and the embolus in an annular shape as in No. 52-79059, or by tightening the periphery of the bottomed cup as in Utility Model Application No. 52-164430. The bottomed cup of the ignition device and the fitting part of the embolus are connected in an annular manner to increase the electrical insulation of the igniter. be. However, in the above-mentioned ignition device,
Although it is possible to increase the adhesion strength of the bottomed cup and the electrically bridged embolus to some extent, the degree of engagement between the electrically bridged embolus and the bottomed cup must be perfect.
There is a drawback that the above electrical insulation cannot be satisfied unless the bottomed cup-fitting portion of the embolus is approximately a perfect circle. Therefore, the present inventors investigated various methods for further increasing the electrical insulation of the igniter, and as a result, they decided to seal the gap between the bottomed cup opening end and the embolization joint using an adhesive composition with a high electrical insulation. It has been found that the degree of electrical insulation is significantly increased, and that unprecedented static electricity resistance performance can be obtained. Therefore, the present inventors investigated various methods for further increasing the electrical insulation of the igniter, and found that the gap between the bottomed cup opening end and the embolization joint was sealed with an adhesive composition with high electrical insulation. It has been found that the degree of electrical insulation is significantly increased, and that unprecedented static electricity resistance performance can be obtained. The present invention was made based on the above knowledge, and an object of the present invention is to provide an electric detonator that is safe against static electricity. That is, in the present invention, an ignition device consisting of a bottomed cup enclosing an ignition part and an embolus with an electric bridge is attached to the opening of the raw material detonator, and electrical insulation is provided between the open end of the bottomed cup of the ignition device and the embolization joint. By sealing with a highly adhesive composition, when the igniter is an electric detonator with an insulating structure and static electricity is applied between the detonator body and the ignition part, the detonator body and the bridge part The feature is that it prevents spark discharge that occurs during the process. Next, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway sectional view showing a typical embodiment of an electric detonator according to the present invention. Reference numeral 1 denotes a cylindrical embolus main body, which has a cylindrical tube fitting portion 2 and a bottomed cup fitting portion 3 having a diameter smaller than the diameter of the embolus main body 1 . The leg wire 4 and the core wires 5a, 5b pass through the embolus body 1 and become bare wires near the bottomed cup fitting portion 3a, and the end portion of the leg wire 4 is bent along the end surface of the bottomed cup fitting portion 3. The electric bridge 6 is attached to the end. The bottomed cup 7 is fitted into the bottomed cup fitting part 3 of the embolus body 1, and the inside of the cup is filled with a powdered igniter 8 such as Rodan lead type or DDNP type. The space between the open end of the bottomed cup and the embolic joint 11 and the outer peripheral edge of the bottomed cup 7 are sealed with an adhesive composition 10 having a high degree of electrical insulation. In the case of an electric detonator, a bottomed cup 7 filled with igniter is attached to the electric bridging embolus 1, and the open end of the bottomed cup and the embolus joint are sealed with an adhesive composition 10 having a high degree of electrical insulation. The device is attached to the opening of the tube 9 of the raw material detonator, and the tube fitting portion of the embolus main body 1 is fastened into an annular shape. A is the tube fastening part. The ignition device is, for example, connected to the electric bridge 6 as shown in FIG.
The ignition ball 14 may be glued around the periphery of the igniter 14, or the bottomed cup 7 and the bottomed cup fitting portion 3 may be fastened to the tube body 9 in an annular shape at the same time as shown in FIG. Further, as shown in FIG. 4, a concave portion 13 on the inner side of the vertical edge of the bottomed cup 7 and a convex portion 12 on the outer circumference of the bottomed cup fitting portion 3 may be provided, and further, as shown in FIG. A bottomed cup 7 having a concave portion 13 on the inner side of the vertical edge of the bottomed cup 7 and an embolus having a convex portion 12 on the outer periphery of the bottomed cup fitting portion 3 are fastened together in an annular manner to the tube body 9. But that's fine. The term "seal" as used in the present invention refers to intervening the adhesive composition 10 between the ignition part and the outside of the igniter to isolate the ignition part from the outside of the igniter. For example, as shown in FIG. impregnating and coating the igniter in the adhesive composition;
As shown in FIG. 2, this refers to filling the adhesive composition 10 between the open end of the bottomed cup and the embolic junction 11. The outside of the igniter here refers to the outer peripheral edge portions of the embolus body 1 and the bottomed cup 7. The ignition device used in the electric detonator of the present invention consists of an embolus, a bottomed cup, and an adhesive composition with a high degree of electrical insulation. It is injection molded from hard thermoplastic resin such as The bottomed cup is preferably made of a soft polymer material that has good adhesion to the embolus and tightly adheres to the bottomed cup fitting part 3 when combined with the raw detonator, such as low-density polyethylene, vinyl butyral, etc. Resins, ethylene/vinyl acetate copolymers, ethylene ionomers, flexible polyvinyl chloride, chlorinated polyethylene, etc. are suitable, and are particularly flexible.
Preferred are ethylene ionomers and ethylene-vinyl acetate copolymers that are easy to injection mold. In the present invention, in order to provide a high degree of insulation between the core wires 5a, 5b near the ignition part and the tube body 9, the bottomed cup 7 made of a soft polymeric material is used as described above,
A bottomed cup 7 is attached to the bottomed cup fitting portion 3 of the embolization body 1.
Furthermore, the gap between the open end of the bottomed cup and the embolic joint 11 is sealed with an adhesive composition 10 having a high degree of electrical insulation. The adhesive composition 10 referred to herein is an adhesive composition made of a polymeric substance with high electrical insulation, preferably having an electrical insulation with a volume resistivity of 10 12 Ω·cm or more, and having a high electrical insulation property. It is desirable to use a material that is highly compatible with the synthetic resin used for the bottom cup and embolus. For example, as an adhesive composition with a high degree of electrical insulation,
Waxes such as paraffin, ceresin, petrolatum, ozokerite, phenolic resin-nitrile rubber, epoxy resin, epoxy resin-aliphatic polyamine, epoxy resin-aliphatic polyamine, epoxy resin-polyamide, epoxy resin-aromatic amine adduct silicone resin, Examples include adhesives such as polybutadiene, nitrile rubber, and dimethacrylate of polyester, and preferably epoxy resin, epoxy resin-aliphatic polyamine, and epoxy resin-polyamide can increase the degree of electrical insulation. The electric detonator of the present invention configured as described above uses a soft polymer material with a high degree of electrical insulation for the bottomed cup when static electricity is applied between the core wire short-circuited part of the leg wire and the tube body. Since the open end and the embolization joint are sealed with an adhesive composition with high electrical insulation, there is high electrical insulation between the core wire and the raw material tube, and high resistance is achieved without causing spark discharge near the ignition part. It has electrostatic properties. Example 1 An embolus with leg wires and electrical bridges was injection molded from medium-density polyethylene and filled with powdered igniter consisting of lead rhodan and potassium chlorate, and injection molded from ethylene-based ionomer resin, a soft polymeric material. After joining the bottomed cups and applying an adhesive consisting of pre-mixed epoxy resin and polyamide resin,
The electric detonator shown in Figure 1 was prototyped by attaching it to the raw material detonator. Between the short-circuited core wire and the tube body of the test detonator,
Electrostatic energy of 0 to 25 KV charged to a 2000 pF capacitor was applied to determine whether or not it would explode. As a result, it caught fire at 20KV. As a comparative example, one without adhesive composition ignited at 5KV. Example 2 The adhesive composition shown in Table 1 was applied to the bottom surface of the bottomed cup fitting part of an embolus with a leg wire and electric bridge made by injection molding of polypropylene, and a soft high-temperature plug was filled with powdered igniter made of DDNP. A bottomed cup made of injection molded molecular material ethylene/vinyl acetate copolymer is combined.
An electric detonator attached to a raw material detonator as shown in FIGS. 3 to 5 was prototyped and measured in the same manner as in Example 1. The results are shown in Table 1.
【表】
第１表に示す結果から明らかなように、本発明
の電気雷管は耐静電気性能に優れていることがわ
かる。[Table] As is clear from the results shown in Table 1, the electric detonator of the present invention has excellent antistatic performance.
第１図イ，ロは本発明に係る電気雷管の代表的
な実施態様と示す一部切欠断面図、第２図〜第５
図は他の実施態様を示す一部切欠断面図である。
１……塞栓本体、２……管体嵌合部、３……有
底カツプ嵌合部、４……脚線、５ａ，５ｂ……芯
線、６……電橋、７……有底カツプ、８……粉状
点火薬、９……管体、１０……粘着組成物、１１
……塞栓接合部、１２……有底カツプ７の固定部
３の外周縁に設けれた凸部、１３……有底カツプ
７の周縁垂直部の内側に設けられた凹部、Ａ……
管体締結部、Ｂ……有底カツプ締結部、１４……
点火玉。
Figures 1A and 5B are partially cutaway sectional views showing typical embodiments of the electric detonator according to the present invention, and Figures 2 to 5.
The figure is a partially cutaway sectional view showing another embodiment. DESCRIPTION OF SYMBOLS 1... Embolization body, 2... Tube body fitting part, 3... Bottomed cup fitting part, 4... Leg wire, 5a, 5b... Core wire, 6... Electric bridge, 7... Bottomed cup , 8... Powdered ignition powder, 9... Tube body, 10... Adhesive composition, 11
. . . Embolic junction, 12 . . . Convex portion provided on the outer periphery of the fixing portion 3 of the bottomed cup 7, 13 .
Pipe body fastening part, B... Bottomed cup fastening part, 14...
Fireball.
Claims (1)
らなる電気雷管用点火装置を原料雷管開口部に装
着した電気雷管において、該点火装置の有底カツ
プ開口端と塞栓接合部の間を電気絶縁度の高い粘
着組成物でシールすることを特徴とする電気雷
管。 ２ 粘着組成物が1012Ω・cm以上の体積固有抵抗
率を有する高分子物質を主体としたことを特徴と
する特許請求の範囲第１項記載の電気雷管。 ３ 該粘着組成物がエポキシ樹脂、合成ゴムを主
剤とした接着剤であることを特徴とする特許請求
の範囲第２項記載の電気雷管。[Scope of Claims] 1. In an electric detonator in which an igniter for an electric detonator consisting of a bottomed cup enclosing an ignition part and an embol with an electric bridge is attached to an opening of the raw material detonator, the open end of the bottomed cup of the ignition device and the embolus An electric detonator characterized by sealing between joints with an adhesive composition having a high degree of electrical insulation. 2. The electric detonator according to claim 1, wherein the adhesive composition is mainly composed of a polymeric substance having a specific volume resistivity of 10 12 Ω·cm or more. 3. The electric detonator according to claim 2, wherein the adhesive composition is an adhesive whose main ingredient is epoxy resin or synthetic rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4324678A JPS54138111A (en) | 1978-04-14 | 1978-04-14 | Electric detonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4324678A JPS54138111A (en) | 1978-04-14 | 1978-04-14 | Electric detonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54138111A JPS54138111A (en) | 1979-10-26 |
| JPS6233514B2 true JPS6233514B2 (en) | 1987-07-21 |
Family
ID=12658520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4324678A Granted JPS54138111A (en) | 1978-04-14 | 1978-04-14 | Electric detonator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54138111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9121118B2 (en) | 2011-01-28 | 2015-09-01 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731233A (en) * | 2012-06-21 | 2012-10-17 | 中国科学技术大学 | Modularized electronic chip, and electronic detonator using it |
-
1978
- 1978-04-14 JP JP4324678A patent/JPS54138111A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9121118B2 (en) | 2011-01-28 | 2015-09-01 | Donaldson Company, Inc. | Method and apparatus for forming a fibrous media |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54138111A (en) | 1979-10-26 |
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