JP4364709B2

JP4364709B2 - Ignition device

Info

Publication number: JP4364709B2
Application number: JP2004113233A
Authority: JP
Inventors: 純一西村; 一男松田; 和敬斎藤
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2004-04-07
Filing date: 2004-04-07
Publication date: 2009-11-18
Anticipated expiration: 2024-04-07
Also published as: JP2005299957A

Description

本発明は、自動車用エアバッグやシートベルトプリテンショナ等の火薬を用いるシステムで使用される着火装置に関する。 The present invention relates to an ignition device used in a system using explosives such as an automobile airbag or a seat belt pretensioner.

近年、一台の自動車に採用されるエアバッグやシートベルトプリテンショナ等の数は増加傾向にあり、その結果、これらを作動させるための着火装置の数も増える傾向にある。このような着火装置の数の増大に対応するため、複数の着火装置をバス接続させ、コントロールユニットからの通信コマンドで点火制御を行うことにより、ハーネスの削減を図る技術がある（例えば、特許文献１参照）。 In recent years, the number of airbags and seat belt pretensioners employed in a single automobile has been increasing, and as a result, the number of ignition devices for operating them has also been increasing. In order to cope with such an increase in the number of ignition devices, there is a technique for reducing the number of harnesses by connecting a plurality of ignition devices to a bus and performing ignition control with a communication command from a control unit (for example, Patent Documents). 1).

このようなシステムに対応するために個々の点火装置に着火素子に加えて通信点火回路を設ける必要があるが、出願人は通信回路と点火回路と着火素子とを一つのＩＣに納める技術を開発し先の出願を行っている（特願２００２−３７６６３７号）。 In order to cope with such a system, it is necessary to provide a communication ignition circuit in addition to the ignition element in each ignition device, but the applicant has developed a technology for putting the communication circuit, the ignition circuit and the ignition element in one IC. A previous application has been filed (Japanese Patent Application No. 2002-376637).

さらに、出願人は構造の簡略化と通信点火回路搭載スペースの拡大を可能にするべくバス接続用のピンを有するヘッダ部と火薬部との間に通信点火回路を配置してなる着火装置を開発し先の出願を行っている（特願２００３−４１９４７９号）。 Furthermore, the applicant has developed an ignition device in which a communication ignition circuit is arranged between a header part having a bus connection pin and an explosive part in order to simplify the structure and expand the communication ignition circuit mounting space. A previous application has been filed (Japanese Patent Application No. 2003-419479).

ところで、先の出願の着火装置等において想定されていたものは、図３に示すように、一方のピン１０１を導電性のヘッダ部本体１０２に導通可能に保持し、他方のピン１０１をヘッダ部本体１０２に絶縁材料１０３を介して絶縁状態で保持するようになっており、さらにヘッダ部本体１０２が火薬部１０４および通信点火回路１０５を覆う導電性のキャップ１０６に接触させられる構造となっている。
特開２０００−１２４９３２号公報 By the way, what was assumed in the ignition device or the like of the previous application is that, as shown in FIG. 3, one pin 101 is held conductively to the conductive header portion main body 102, and the other pin 101 is held in the header portion. The main body 102 is held in an insulating state via an insulating material 103, and the header main body 102 is configured to be in contact with a conductive cap 106 that covers the explosive portion 104 and the communication ignition circuit 105. .
JP 2000-124932 A

ところで、図３に示す構造では、一方のピン１０１が導電性のヘッダ部本体１０２に電気的導通状態にあるため、車体側に短絡されている導電性の取付用部材１０８に取り付ける際に、ヘッダ部本体１０２と取付用部材１０８とを絶縁するべくこれらの間に絶縁性の樹脂モールド１０９が必要となる。ヘッダ部本体１０２にピン１０１を保持する保持長さを確保する必要があることから、この樹脂モールド１０９を設ける分はヘッダ部本体１０２を取付用部材１０８に対し離す必要があり、しかも樹脂モールド１０９は強度を確保するために厚みを確保する必要があることからも、通信点火回路１０５を配置するための内部スペースが狭くなってしまうことになる。 By the way, in the structure shown in FIG. 3, since one pin 101 is in an electrically conductive state with the conductive header portion main body 102, the header 101 is attached to the conductive mounting member 108 short-circuited to the vehicle body side. In order to insulate the main part 102 and the mounting member 108, an insulating resin mold 109 is required between them. Since it is necessary to secure a holding length for holding the pin 101 in the header portion main body 102, it is necessary to separate the header portion main body 102 from the mounting member 108 as much as the resin mold 109 is provided. Since it is necessary to secure the thickness in order to secure the strength, the internal space for arranging the communication ignition circuit 105 becomes narrow.

また、一方のピン１０１はヘッダ部本体１０２を介して導電性のキャップ１０６に電気的導通状態にあるため、車体側に短絡されている導電性の取付用部材１０８に取り付ける際に、キャップ１０６を取付用部材１０８に接触させてはならず、そのため、キャップ１０６を絶縁性の樹脂材料からなるカバー１１０で覆っていた。このようにカバー１１０で覆う必要があると、その分も、通信点火回路１０５を配置するための内部スペースが狭くなってしまうことになる。 In addition, since one pin 101 is in an electrically conductive state with the conductive cap 106 via the header body 102, the cap 106 is attached to the conductive mounting member 108 that is short-circuited to the vehicle body side. Therefore, the cap 106 was covered with a cover 110 made of an insulating resin material. If it is necessary to cover with the cover 110 in this way, the internal space for disposing the communication ignition circuit 105 is reduced accordingly.

したがって、本発明は、通信点火回路を配置するための内部スペースを広く確保できる着火装置の提供を目的とする。 Therefore, an object of the present invention is to provide an ignition device that can secure a wide internal space for disposing a communication ignition circuit.

上記目的を達成するために、請求項１に係る発明は、バス接続用の複数のピン（例えば実施形態におけるピン１２）をヘッダ部本体（例えば実施形態におけるヘッダ部本体２６）に保持してなるヘッダ部（例えば実施形態におけるヘッダ部１３）と火薬部（例えば実施形態における火薬部１５）との間に通信点火回路（例えば実施形態における通信点火回路１４）を配置してなる着火装置（例えば実施形態における着火装置１１）であって、前記複数のピンが絶縁部材（例えば実施形態における絶縁保持材３０）にて導電性の前記ヘッダ部本体と絶縁されると共に、前記通信点火回路に電気的に接続され、前記ヘッダ部本体が、前記火薬部および前記通信点火回路を覆う導電性のキャップ（例えば実施形態におけるキャップ１６）に接触状態で該キャップから突出し、該突出部分にて車体側に短絡する導電性の取付用部材（例えば実施形態における取付用部材４１）に接触状態で係止されていることを特徴としている。 In order to achieve the above object, the invention according to claim 1 is configured such that a plurality of bus connection pins (for example, the pin 12 in the embodiment) are held in a header body (for example, the header section body 26 in the embodiment). An ignition device (for example, implementation) in which a communication ignition circuit (for example, the communication ignition circuit 14 in the embodiment) is arranged between a header (for example, the header portion 13 in the embodiment) and an explosive part (for example, the explosive unit 15 in the embodiment). a firing apparatus 11) in the form, the plurality of pins are insulated from the header portion main body of the conductive by an insulating member (e.g., insulating holding member 30 in the embodiment) Rutotomoni electrically to the communication ignition circuit The header body is connected to a conductive cap that covers the explosive part and the communication ignition circuit (for example, the cap 16 in the embodiment). Projecting from the cap, and characterized in that it is locked in contact with the (member 41 for attachment, for example in the embodiment) conductive mounting member shorted to the vehicle body side at the projecting portion.

請求項１に係る発明によれば、複数のピンが導電性のヘッダ部本体と絶縁されて通信点火回路に電気的に接続されているため、車体側に短絡されている導電性の取付用部材とヘッダ部本体との間に絶縁性の樹脂モールドが不要となり、ヘッダ部本体を取付用部材に近づけることができる。したがって、通信点火回路を配置するための内部スペースを広く確保できる。また、ヘッダ部本体が火薬部および通信点火回路を覆う導電性のキャップに接触させられていても、ピンとキャップとが電気的に導通してしまうことがない。したがって、車体側に短絡されている導電性の取付用部材に取り付ける際に、キャップを取付用部材に接触させても良く、よって、キャップを絶縁材料からなるカバーで覆う必要がなくなる。この点からも、通信点火回路を配置するための内部スペースを広く確保できる。しかも、導電性のキャップを車体側に短絡されている導電性の取付用部材に接触させることができるため、電磁波ノイズをキャップから取付用部材を介して車体側に流すことができる。 According to the first aspect of the present invention, since the plurality of pins are insulated from the conductive header portion main body and electrically connected to the communication ignition circuit, the conductive mounting member is short-circuited to the vehicle body side. An insulating resin mold is not required between the header part body and the header part body, and the header part body can be brought close to the mounting member . Therefore, the internal space for arranging the communication ignition circuit can be widely ensured. Moreover, even if the header part main body is made to contact the conductive cap which covers an explosive part and a communication ignition circuit, a pin and a cap will not electrically conduct. Therefore, when attaching to the conductive attachment member that is short-circuited on the vehicle body side, the cap may be brought into contact with the attachment member, so that it is not necessary to cover the cap with a cover made of an insulating material. Also from this point, it is possible to secure a wide internal space for arranging the communication ignition circuit. In addition, since the conductive cap can be brought into contact with the conductive mounting member that is short-circuited to the vehicle body side, electromagnetic wave noise can flow from the cap to the vehicle body side through the mounting member.

また、車体側に短絡する導電性の取付用部材に、ヘッダ部本体が接触状態で係止されるため、ヘッダ部本体を取付用部材にさらに近づけることになる。したがって、通信点火回路を配置するための内部スペースをさらに広く確保できる。 In addition, since the header part main body is locked in contact with the conductive attachment member that is short-circuited to the vehicle body side, the header part main body is further brought closer to the attachment member. Therefore, a wider internal space for disposing the communication ignition circuit can be secured.

本発明の第１実施形態の着火装置を図１を参照して以下に説明する。
第１実施形態の着火装置１１は、バス接続用の一対のピン１２を有するヘッダ部１３と、該ヘッダ部１３の上側に配置される通信点火回路１４と、この通信点火回路１４の上側に設けられる火薬部１５と、通信点火回路１４および火薬部１５の全体を囲みヘッダ部１３の一部を囲む有底円筒状のキャップ１６と、キャップ１６のヘッダ部１３側に設けられる樹脂モールド１７とを有している。 An ignition device according to a first embodiment of the present invention will be described below with reference to FIG.
The ignition device 11 of the first embodiment is provided with a header portion 13 having a pair of pins 12 for bus connection, a communication ignition circuit 14 disposed on the header portion 13, and an upper side of the communication ignition circuit 14. A bottomed cylindrical cap 16 that surrounds the communication ignition circuit 14 and the gunpowder part 15 and surrounds a part of the header part 13, and a resin mold 17 provided on the header part 13 side of the cap 16. Have.

ヘッダ部１３は、最も通信点火回路１４側に第１円筒面部２１が形成され、第１円筒面部２１の通信点火回路１４とは反対側に外径方向に広がる段面部２２が形成され、段面部２２の第１円筒面部２１とは反対側に第１円筒面部２１よりも大径の第２円筒面部２３が形成され、この第２円筒面部２３の段面部２２とは反対側に第２円筒面部２３から離れるほど小径となるテーパ面部２４が形成され、さらにこのテーパ面部２４の第２円筒面部２３とは反対側に第１円筒面部２１よりも小径の第３円筒面部２５が形成された外径側形状の導電性の金属材料からなるヘッダ部本体２６を有している。このヘッダ部本体２６には、中心軸線から相反方向に等距離離れて中心軸線に沿う貫通穴２７が一対形成されている。 The header portion 13 is formed with a first cylindrical surface portion 21 closest to the communication ignition circuit 14 side, and a stepped surface portion 22 extending in the outer diameter direction is formed on the opposite side of the first cylindrical surface portion 21 from the communication ignition circuit 14. A second cylindrical surface portion 23 having a diameter larger than that of the first cylindrical surface portion 21 is formed on the opposite side of the first cylindrical surface portion 21 to the second cylindrical surface portion 21, and the second cylindrical surface portion is opposite to the stepped surface portion 22 of the second cylindrical surface portion 23. An outer diameter in which a tapered surface portion 24 having a smaller diameter is formed as the distance from the first cylindrical surface portion 23 increases, and a third cylindrical surface portion 25 having a smaller diameter than the first cylindrical surface portion 21 is formed on the opposite side of the tapered cylindrical surface portion 24 from the second cylindrical surface portion 23. It has a header part body 26 made of a conductive metal material having a side shape. The header portion body 26 is formed with a pair of through holes 27 that are equidistant from the central axis in the opposite direction along the central axis.

ヘッダ部１３は、一対つまり複数の導電性のピン１２を有しており、ヘッダ部本体２６の各貫通穴２７の中心位置に各ピン１２がヘッダ部本体２６に接触することがないようにガラスハーメチック等の絶縁保持材３０を介して保持されている。 The header portion 13 has a pair, that is, a plurality of conductive pins 12, and is made of glass so that each pin 12 does not contact the header portion body 26 at the center position of each through hole 27 of the header portion body 26. It is held via an insulating holding material 30 such as hermetic.

通信点火回路１４は、ヘッダ部本体２６の第１円筒面部２１と同径の略短円柱状をなす回路本体３３の軸線方向における一側に着火素子３４が設けられており、回路本体３３の軸線方向における逆側には各ピン１２に電気的に接続される図示せぬ端子部が設けられている。 The communication ignition circuit 14 is provided with an ignition element 34 on one side in the axial direction of a circuit main body 33 having a substantially short columnar shape having the same diameter as the first cylindrical surface portion 21 of the header main body 26. On the opposite side in the direction, a terminal portion (not shown) that is electrically connected to each pin 12 is provided.

そして、通信点火回路１４は回路本体３３を第１円筒面部２１と同軸に配置しかつ図示せぬ端子部に各ピン１２を接触させた状態でヘッダ部１３に接合固定される。これにより複数のピン１２がすべて導電性のヘッダ部本体２６と絶縁されて通信点火回路１４に電気的に接続される。 The communication ignition circuit 14 is bonded and fixed to the header portion 13 with the circuit body 33 disposed coaxially with the first cylindrical surface portion 21 and with each pin 12 in contact with a terminal portion (not shown). Thereby, all the plurality of pins 12 are insulated from the conductive header portion main body 26 and electrically connected to the communication ignition circuit 14.

その後、導電性の金属材料からなる有底円筒状のキャップ１６の底部側に所定量の火薬を入れた後、キャップ１６に、上記のように一体化されたヘッダ部１３および通信点火回路１４を通信点火回路１４側から挿入し、ヘッダ部１３については第１円筒面部２１までを嵌合させるようにして通信点火回路１４側で火薬を押し固める。つまり、火薬を圧填して火薬部１５を形成する。このとき、ヘッダ部本体２６が火薬部１５および通信点火回路１４を覆う導電性のキャップ１６に接触させられる。この状態でヘッダ部本体２６にキャップ１６が溶接される。 Then, after putting a predetermined amount of explosives into the bottom side of the bottomed cylindrical cap 16 made of a conductive metal material, the cap 16 is integrated with the header portion 13 and the communication ignition circuit 14 integrated as described above. It inserts from the communication ignition circuit 14 side, and the explosive is pressed and solidified by the communication ignition circuit 14 side so that the header part 13 may be fitted to the first cylindrical surface part 21. That is, the explosive part 15 is formed by compressing the explosive. At this time, the header body 26 is brought into contact with the conductive cap 16 that covers the explosive portion 15 and the communication ignition circuit 14. In this state, the cap 16 is welded to the header portion main body 26.

そして、キャップ１６のヘッダ部１３側とヘッダ部１３とにかけて外径側に樹脂モールド１７が設けられて、バス接続用のピン１２を有するヘッダ部１３と火薬部１５との間に通信点火回路１４を配置してなる着火装置１１となる。 A resin mold 17 is provided on the outer diameter side of the cap 16 between the header portion 13 side and the header portion 13, and the communication ignition circuit 14 is provided between the header portion 13 having the bus connection pin 12 and the explosive portion 15. It becomes the ignition device 11 which arranges.

ここで、樹脂モールド１７はヘッダ部本体２６のテーパ面部２４と連続する第１テーパ面部３７とこの第１テーパ面部３７の大径側に設けられる円筒面部３８とこの円筒面部３８の第１テーパ面部３７とは反対側に設けられ円筒面部３８から離れるほど小径となる第２テーパ面部３９とを有する外径側形状をなしている。 Here, the resin mold 17 includes a first tapered surface portion 37 continuous with the tapered surface portion 24 of the header portion main body 26, a cylindrical surface portion 38 provided on the large diameter side of the first tapered surface portion 37, and a first tapered surface portion of the cylindrical surface portion 38. The outer diameter side shape which has the 2nd taper surface part 39 which is provided in the opposite side to 37 and becomes small diameter so that it leaves | separates from the cylindrical surface part 38 is comprised.

このような着火装置１１の樹脂モールド１７およびヘッダ部本体２６の外径側に取付用部材４１が加締めおよび溶接の少なくともいずれか一方で取り付けられ、これにより着火装置１１は取付用部材４１に取り付けられる。ここで、取付用部材４１は車体側に短絡される導電性の金属材料で形成されており、加締められることでヘッダ部本体２６のテーパ面部２４と、樹脂モールド１７の第１テーパ面部３７、円筒面部３８および第２テーパ面部３９とに接触する。このとき、車体側に短絡する導電性の取付用部材４１に、ヘッダ部本体２６が接触状態で係止される。 The mounting member 41 is attached to at least one of caulking and welding on the outer diameter side of the resin mold 17 and the header body 26 of the ignition device 11, whereby the ignition device 11 is attached to the mounting member 41. It is done. Here, the mounting member 41 is formed of a conductive metal material that is short-circuited to the vehicle body side, and is crimped to form the tapered surface portion 24 of the header portion main body 26 and the first tapered surface portion 37 of the resin mold 17. It contacts the cylindrical surface portion 38 and the second tapered surface portion 39. At this time, the header portion body 26 is locked in contact with the conductive attachment member 41 that is short-circuited to the vehicle body.

以上に述べた第１実施形態によれば、複数のピン１２が導電性のヘッダ部本体２６と絶縁されて通信点火回路１４に電気的に接続されているため、車体側に短絡されている導電性の取付用部材４１とヘッダ部本体２６との間に絶縁性の樹脂モールドが不要となり、ヘッダ部本体２６を取付用部材４１に近づけることができ、具体的には、ヘッダ部本体２６を取付用部材４１に接触させることができる。しかも、強度的に有利な金属製のヘッダ部本体２６をキャップ１６から突出させてこのヘッダ部本体２６を取付用部材４１に接触係止させるため、強度的にも問題ない。したがって、通信点火回路１４を配置するための内部スペースを軸線方向に広く確保できる。 According to the first embodiment described above, since the plurality of pins 12 are insulated from the conductive header portion main body 26 and electrically connected to the communication ignition circuit 14, the conductive material short-circuited to the vehicle body side. The insulating resin mold is not required between the attachment member 41 and the header part body 26, and the header part body 26 can be brought close to the attachment member 41. Specifically, the header part body 26 is attached. The member 41 can be brought into contact. In addition, since the metal header portion body 26, which is advantageous in terms of strength, protrudes from the cap 16 and the header portion body 26 is brought into contact with the mounting member 41, there is no problem in terms of strength. Therefore, a wide internal space for arranging the communication ignition circuit 14 can be secured in the axial direction.

また、ヘッダ部本体２６が火薬部１５および通信点火回路１４を覆う導電性のキャップ１６に接触させられてもピン１２とキャップ１６とが電気的に導通してしまうことがない。したがって、車体側に短絡されている導電性の取付用部材４１に取り付ける際に、キャップ１６を取付用部材４１に接触させても良く、よって、キャップ１６を絶縁材料からなるカバーで覆う必要がなくなる。したがって、通信点火回路１４を配置するための内部スペースを径方向にも広く確保できる。 Further, even if the header part body 26 is brought into contact with the conductive cap 16 that covers the explosive part 15 and the communication ignition circuit 14, the pin 12 and the cap 16 are not electrically connected. Therefore, when attaching to the conductive attachment member 41 that is short-circuited to the vehicle body side, the cap 16 may be brought into contact with the attachment member 41. Therefore, it is not necessary to cover the cap 16 with a cover made of an insulating material. . Therefore, a wide internal space for arranging the communication ignition circuit 14 can be secured in the radial direction.

しかも、導電性のキャップ１６およびヘッダ部本体２６を車体側に短絡されている導電性の取付用部材４１に接触させることができるため、電磁波ノイズをキャップ１６およびヘッダ部本体２６から取付用部材４１を介して車体側に流すことができる。 Moreover, since the conductive cap 16 and the header body 26 can be brought into contact with the conductive mounting member 41 that is short-circuited to the vehicle body side, electromagnetic wave noise is transmitted from the cap 16 and the header body 26 to the mounting member 41. It can flow to the vehicle body side via

参考技術の着火装置１１を図２を参照して第１実施形態との相違部分を中心に以下に説明する。なお、第１実施形態と同様の部分には同一の符号を付しその説明は略す。 A reference technology ignition device 11 will be described below with reference to FIG. 2, focusing on the differences from the first embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment, and the description is abbreviate | omitted.

参考技術の着火装置１１は、ヘッダ部本体２６をキャップ１６から突出させず、突出するヘッダ部本体２６および樹脂モールド１７の代わりに、導電性の金属材料からなる台部材５０を用いている。つまり、ヘッダ部本体２６はキャップ１６に全体が挿入される短円柱状をなしており、ヘッダ部本体２６のキャップ１６から露出する部分とキャップ１６のヘッダ部本体２６側とを覆うようにして台部材５０がキャップ１６に嵌合されている。 The ignition device 11 of the reference technique does not protrude the header portion main body 26 from the cap 16, and uses a base member 50 made of a conductive metal material instead of the protruding header portion main body 26 and the resin mold 17. That is, the header section body 26 has a short cylindrical shape that is entirely inserted into the cap 16, and the header section body 26 covers the portion exposed from the cap 16 of the header section body 26 and the header section body 26 side of the cap 16. The member 50 is fitted to the cap 16.

ここで、台部材５０は、軸線方向における中間部に円筒面部５１が形成され、円筒面部５１の両側に円筒面部５１から離れるほど小径となる第１テーパ面部５２および第２テーパ面部５３を有する外径側形状をなしている。 Here, the base member 50 is formed with a cylindrical surface portion 51 at an intermediate portion in the axial direction, and has an outer surface having a first tapered surface portion 52 and a second tapered surface portion 53 that become smaller in diameter as the distance from the cylindrical surface portion 51 increases. It has a radial shape.

このような参考技術の着火装置１１は、台部材５０の外径側に取付用部材４１が加締められることになり、その結果、取付用部材４１に取り付けられる。ここで、取付用部材４１は、加締められることで台部材５０の第１テーパ面部５２、円筒面部５１および第２テーパ面部５３に接触する。つまり、ヘッダ部本体２６およびキャップ１６に接触状態で固定される導電性の金属材料からなる台部材５０が、車体側に短絡する導電性の取付用部材４１に接触状態で係止される。 The ignition device 11 according to the reference technique is attached to the mounting member 41 as a result of the mounting member 41 being crimped on the outer diameter side of the base member 50. Here, the attachment member 41 comes into contact with the first tapered surface portion 52, the cylindrical surface portion 51, and the second tapered surface portion 53 of the base member 50 by being crimped. That is, the base member 50 made of a conductive metal material fixed in contact with the header body 26 and the cap 16 is locked in contact with the conductive mounting member 41 that is short-circuited to the vehicle body side.

以上に述べた参考技術によれば、複数のピン１２が導電性のヘッダ部本体２６と絶縁されて通信点火回路１４に電気的に接続されているため、車体側に短絡されている導電性の取付用部材４１とヘッダ部本体２６との間に絶縁性の樹脂モールドが不要となり、樹脂モールドの代わりに強度的に有利な金属製の台部材５０を使用することになることから、強度的にも問題なくヘッダ部本体２６を取付用部材４１に近づけることができる。したがって、通信点火回路１４を配置するための内部スペースを軸線方向に広く確保できる。 According to the reference technique described above, since the plurality of pins 12 are insulated from the conductive header portion body 26 and electrically connected to the communication ignition circuit 14, the conductive pins that are short-circuited to the vehicle body side. An insulating resin mold is not required between the mounting member 41 and the header body 26, and a metal base member 50 that is advantageous in strength is used instead of the resin mold. However, the header body 26 can be brought close to the mounting member 41 without any problem. Therefore, a wide internal space for arranging the communication ignition circuit 14 can be secured in the axial direction.

また、第１実施形態と同様、ヘッダ部本体２６が火薬部１５および通信点火回路１４を覆う導電性のキャップ１６に接触させられてもピン１２とキャップ１６とが電気的に導通してしまうことがないことから、キャップ１６を絶縁材料からなるカバーで覆う必要がなくなって、通信点火回路１４を配置するための内部スペースを径方向にも広く確保できる。 Similarly to the first embodiment, even if the header body 26 is brought into contact with the conductive cap 16 that covers the explosive portion 15 and the communication ignition circuit 14, the pin 12 and the cap 16 are electrically connected. Therefore, it is not necessary to cover the cap 16 with a cover made of an insulating material, and a large internal space for arranging the communication ignition circuit 14 can be secured in the radial direction.

しかも、導電性のキャップ１６および台部材５０を車体側に短絡されている導電性の取付用部材４１に接触させることができるため、電磁波ノイズをキャップ１６および台部材５０から取付用部材４１を介して車体側に流すことができる。 Moreover, since the conductive cap 16 and the base member 50 can be brought into contact with the conductive mounting member 41 that is short-circuited to the vehicle body side, electromagnetic wave noise is transmitted from the cap 16 and the base member 50 through the mounting member 41. Can flow to the car body side.

本発明の第１実施形態の着火装置および取付用部材を示す正断面図である。It is a front sectional view showing the ignition device and mounting member of the first embodiment of the present invention. 参考技術の着火装置および取付用部材を示す正断面図である。It is a front sectional view showing an ignition device and a mounting member of reference technology . 背景技術の着火装置および取付用部材を示す正断面図である。It is front sectional drawing which shows the ignition device and attachment member of background art.

Explanation of symbols

１１着火装置
１２ピン
１３ヘッダ部
１４通信点火回路
１５火薬部
１６キャップ
２６ヘッダ部本体
４１取付用部材
５０台部材
DESCRIPTION OF SYMBOLS 11 Ignition apparatus 12 Pin 13 Header part 14 Communication ignition circuit 15 Gunpowder part 16 Cap 26 Header part main body 41 Mounting member 50 Base member

Claims

An ignition device in which a communication ignition circuit is arranged between a header part and a gunpowder part that hold a plurality of pins for bus connection in a header part body,
Wherein the plurality of pins are insulated from the header portion main body of the conductive by an insulating member Rutotomoni is electrically connected to the communication ignition circuit,
The header body protrudes from the cap in contact with a conductive cap that covers the explosive portion and the communication ignition circuit, and engages with a conductive mounting member that is short-circuited to the vehicle body at the protruding portion. An ignition device characterized by being stopped.