JPH0435957U - - Google Patents
Info
- Publication number
- JPH0435957U JPH0435957U JP7762090U JP7762090U JPH0435957U JP H0435957 U JPH0435957 U JP H0435957U JP 7762090 U JP7762090 U JP 7762090U JP 7762090 U JP7762090 U JP 7762090U JP H0435957 U JPH0435957 U JP H0435957U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- detonator
- impedance
- air bag
- switching
- 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.)
- Pending
Links
- 230000007257 malfunction Effects 0.000 claims description 4
- 239000003721 gunpowder Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Air Bags (AREA)
Description
第１図は本考案の一実施例のエアバツグ装置１
の電気回路図、第２図は本考案の他の実施例のエ
アバツグ装置２１の電気回路図、第３図は本考案
のさらに他の実施例のエアバツグ装置３１の電気
回路図、第４図は本考案の他の実施例のエアバツ
グ装置４１の電気回路図、第５図は本考案のさら
に他の実施例のエアバツグ装置５１の電気回路図
、第６図は従来技術のエアバツグ装置６１の電気
回路図である。
１，２１，３１，４１，５１……エアバツグ装
置、２……加速度センサ、３，３３……処理回路
、４……ハンドル、５……雷管、７……バツテリ
、８……コンデンサ、１０，２０，３０，４０，
５０……点火回路、１１……誤動作防止センサ、
１２……フロントセンサ、Ｒ１〜Ｒ３，Ｒ１０〜
Ｒ１５……抵抗、Ｑ１〜Ｑ４，Ｑ１１，Ｑ１２…
…トランジスタ。
Figure 1 shows an air bag device 1 according to an embodiment of the present invention.
2 is an electrical circuit diagram of an air bag device 21 according to another embodiment of the present invention, FIG. 3 is an electrical circuit diagram of an air bag device 31 according to yet another embodiment of the present invention, and FIG. FIG. 5 is an electric circuit diagram of an air bag device 51 according to another embodiment of the present invention; FIG. 6 is an electric circuit diagram of an air bag device 61 according to the prior art. It is a diagram. 1, 21, 31, 41, 51... Air bag device, 2... Acceleration sensor, 3, 33... Processing circuit, 4... Handle, 5... Detonator, 7... Battery, 8... Capacitor, 10, 20, 30, 40,
50...Ignition circuit, 11...Malfunction prevention sensor,
12...Front sensor, R1~R3, R10~
R15...Resistance, Q1 to Q4, Q11, Q12...
...transistor.
Claims (1)
遮断制御される誤動作防止用の第１スイツチング
素子と、エアバツグを膨張させるための火薬に点
火する雷管と、前記制御手段からの点火信号が与
えられる第２スイツチング素子とが、この順序で
電源ライン間に直列に接続されて構成されるエア
バツグ点火回路において、 前記第１スイツチング素子と雷管との接続点と
、第２スイツチング素子との間に第３スイツチン
グ素子を介在し、前記点火信号をこの第３スイツ
チング素子に与え、該第３スイツチング素子の出
力を前記第２スイツチング素子に駆動電流として
供給することを特徴とするエアバツグ点火回路。 (2) 制御手段からの禁止信号に応答して導通／
遮断制御される誤動作防止用の第１スイツチング
素子と、予め定めるレベル以上の衝撃で導通する
センサと、エアバツグを膨張させるための火薬に
点火する雷管と、前記制御手段からの点火信号が
与えられる第２スイツチング素子とが、この順序
で電源ライン間に直列に接続されて構成されるエ
アバツグ点火回路において、 前記センサおよび雷管と並列に接続される第１
インピーダンス素子と、 前記電源ライン間に直列に接続される第２およ
び第３インピーダンス素子とを含み、 前記第２インピーダンス素子と第３インピーダ
ンス素子との接続点を前記センサと雷管との接続
点に接続し、かつ第１スイツチング素子が導通し
、第２スイツチング素子が遮断しているときに、
第１スイツチング素子から第１インピーダンス素
子を経て雷管から第３インピーダンス素子の経路
で流れる電流と、第１スイツチング素子が遮断し
、第２スイツチング素子が導通しているときに、
第２インピーダンス素子から雷管を経て第２スイ
ツチング素子の経路で流れる電流とが等しくなる
ように、前記第１、第２および第３インピーダン
ス素子の各インピーダンスを選ぶことを特徴とす
るエアバツグ点火回路。 (3) 前記第２インピーダンス素子は、第３スイ
ツチング素子と抵抗との直列回路であつて、前記
第３スイツチング素子は前記第２スイツチング素
子の出力によつて導通／遮断制御されることを特
徴とする請求項第２項記載のエアバツグ点火回路
。 (4) 制御手段からの禁止信号に応答して導通／
遮断制御される誤動作防止用の第１スイツチング
素子と、予め定めるレベル以上の衝撃で導通する
センサと、エアバツグを膨張させるための火薬に
点火する雷管と、前記制御手段からの点火信号が
与えられる第２スイツチング素子とが、この順序
で電源ライン間に直列に接続されて構成されるエ
アバツグ点火回路において、 前記センサおよび雷管と並列に接続される第１
インピーダンス素子と、 前記第１スイツチング素子およびセンサに並列
に接続される第２インピーダンス素子と、 前記雷管と第２スイツチング素子との接続点と
前記第１スイツチング素子との間に介在されるト
ランジスタであつて、前記禁止信号がベースに与
えられ、エミツタ電流で前記第１スイツチング素
子を駆動し、コレクタ電流を前記雷管と第２スイ
ツチング素子との接続点に供給するそのようなト
ランジスタとを含み、 第１スイツチング素子が導通し、第２スイツチ
ング素子が遮断しているときに、第１スイツチン
グ素子から第１インピーダンス素子を経て雷管へ
流れる電流と前記トランジスタのコレクタから雷
管へ流れる前記コレクタ電流との和の電流と、第
１スイツチング素子が遮断し、第２スイツチング
素子が導通しているときに、第２インピーダンス
素子から雷管を経て第２スイツチング素子の経路
で流れる電流とが等しくなるように、前記第１お
よび第２インピーダンス素子の各インピーダンス
を選ぶことを特徴とするエアバツグ点火回路。 (5) 前記第２インピーダンス素子は、第３スイ
ツチング素子と抵抗との直列回路であつて、前記
第３スイツチング素子は前記第２スイツチング素
子の出力によつて導通／遮断制御されることを特
徴とする請求項第４項記載のエアバツグ点火回路
。[Scope of claims for utility model registration] (1) Conduction/conduction in response to a prohibition signal from the control means
A first switching element for preventing malfunction that is cut off and controlled, a detonator that ignites gunpowder for inflating the air bag, and a second switching element that receives an ignition signal from the control means are connected in this order between power lines. In the air bag ignition circuit configured by connecting the first switching element and the detonator in series, a third switching element is interposed between the connection point between the first switching element and the detonator and the second switching element, and the ignition signal is transmitted to the third switching element. 1. An air bag ignition circuit characterized in that the output of the third switching element is supplied to the second switching element as a drive current. (2) Conduction/conduction in response to a prohibition signal from the control means.
A first switching element for preventing malfunction that is cut off and controlled, a sensor that becomes conductive when an impact equal to or higher than a predetermined level occurs, a detonator that ignites gunpowder for inflating the air bag, and a first switching element that receives an ignition signal from the control means. In an airbag ignition circuit configured by connecting two switching elements in series between power lines in this order, the first switching element is connected in parallel with the sensor and the detonator.
an impedance element, and second and third impedance elements connected in series between the power supply lines, and a connection point between the second impedance element and the third impedance element is connected to a connection point between the sensor and the detonator. and when the first switching element is conductive and the second switching element is disconnected,
When the current flowing from the first switching element through the first impedance element and from the detonator to the third impedance element is cut off and the second switching element is conductive,
An air bag ignition circuit characterized in that the impedances of the first, second and third impedance elements are selected so that the current flowing in the path from the second impedance element through the detonator to the second switching element is equal. (3) The second impedance element is a series circuit of a third switching element and a resistor, and the third switching element is controlled to be turned on/off by the output of the second switching element. An airbag ignition circuit according to claim 2. (4) Conduction/conduction in response to a prohibition signal from the control means.
A first switching element for preventing malfunction that is cut off and controlled, a sensor that becomes conductive when an impact equal to or higher than a predetermined level occurs, a detonator that ignites gunpowder for inflating the air bag, and a first switching element that receives an ignition signal from the control means. In an airbag ignition circuit configured by connecting two switching elements in series between power lines in this order, the first switching element is connected in parallel with the sensor and the detonator.
an impedance element, a second impedance element connected in parallel to the first switching element and the sensor, and a transistor interposed between the connection point of the detonator and the second switching element and the first switching element; a transistor having a base on which said inhibit signal is applied, driving said first switching element with an emitter current and supplying a collector current to a connection point between said detonator and a second switching element; A current that is the sum of the current flowing from the first switching element to the detonator via the first impedance element and the collector current flowing from the collector of the transistor to the detonator when the switching element is conductive and the second switching element is disconnected. and the current flowing in the path of the second switching element from the second impedance element via the detonator when the first switching element is cut off and the second switching element is conducting are equal to each other. An air bag ignition circuit characterized in that each impedance of the second impedance element is selected. (5) The second impedance element is a series circuit of a third switching element and a resistor, and the third switching element is controlled to be turned on/off by the output of the second switching element. The air bag ignition circuit according to claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7762090U JPH0435957U (en) | 1990-07-21 | 1990-07-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7762090U JPH0435957U (en) | 1990-07-21 | 1990-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0435957U true JPH0435957U (en) | 1992-03-25 |
Family
ID=31620176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7762090U Pending JPH0435957U (en) | 1990-07-21 | 1990-07-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0435957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0469356U (en) * | 1990-10-26 | 1992-06-19 |
-
1990
- 1990-07-21 JP JP7762090U patent/JPH0435957U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0469356U (en) * | 1990-10-26 | 1992-06-19 |
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