JP2007062492A - Airbag device - Google Patents

Airbag device Download PDF

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JP2007062492A
JP2007062492A JP2005249246A JP2005249246A JP2007062492A JP 2007062492 A JP2007062492 A JP 2007062492A JP 2005249246 A JP2005249246 A JP 2005249246A JP 2005249246 A JP2005249246 A JP 2005249246A JP 2007062492 A JP2007062492 A JP 2007062492A
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airbag
vehicle body
body side
unique information
authentication
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JP4546355B2 (en
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Takeshi Kai
健 甲斐
Nobuko Hashikawa
展子 橋川
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an airbag device capable of recognizing an airbag to be connected from a vehicle body side when the vehicle body side and the airbag side are bonded in the non-contact state. <P>SOLUTION: The airbag device can transmit electric power for operating the airbag and an operation signal of the air bag from the vehicle body side to the airbag side in the non-contact state. The airbag side S is provided with RFIC tag 150 possessing intrinsic information of the airbag possessed by the airbag side S. The vehicle body side V is provided with a memory means 130 for memorizing certification intrinsic information for checking with the intrinsic information of the air bag; a radio communication part 140 capable of receiving the intrinsic information of the airbag returned by the RFIC tag 150; and a control part 120 for collating the received intrinsic signal of the airbag with the certification intrinsic information. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両用のエアバッグ装置に関する。特に、衝突しそうな場合の車両状態に応じるエアバッグ装置であって、膨張を開始する電気的検知器を含むエアバッグ装置に関する。   The present invention relates to a vehicle airbag device. In particular, the present invention relates to an airbag device that responds to a vehicle condition in the event of a collision and includes an electrical detector that starts inflating.

車両が前面から衝突した際に生じる衝撃が一定値以上に達した場合に、シートベルトの働きを補助して乗員に加わる衝撃を軽減するエアバッグ装置が知られている。例えば、自動車にエアバッグ装置を搭載する場合に、自動車の衝突を検知して作動する衝撃センサ及びエアバッグ作動電源を車体側に配置し、エアバッグ駆動制御部およびエアバッグをステアリング側に配置している。   There is known an airbag device that assists the function of a seat belt and reduces an impact applied to an occupant when an impact generated when a vehicle collides from the front reaches a certain value or more. For example, when an airbag device is mounted on an automobile, an impact sensor and an airbag operating power source that operate by detecting a collision of the automobile are arranged on the vehicle body side, and an airbag drive control unit and an airbag are arranged on the steering side. ing.

このようなエアバッグ装置を搭載した自動車は、自動車が何らかの物体に衝突した場合、衝撃センサの作動によって衝撃センサから衝突検知信号が出力される。出力された衝突検知信号は車体側からステアリング側に伝送される。ステアリング側に伝送された衝突検知信号は、エアバッグ駆動制御部に伝えられ、エアバッグを展開する。   In a vehicle equipped with such an airbag device, when the vehicle collides with some object, a collision detection signal is output from the impact sensor by the operation of the impact sensor. The output collision detection signal is transmitted from the vehicle body side to the steering side. The collision detection signal transmitted to the steering side is transmitted to the airbag drive control unit, and the airbag is deployed.

ところで、自動車の車体側に配置される各構成部品はその配置位置が固定的であるが、ステアリング側に配置された各構成部品はステアリングの回転操作に対応して、その配置位置が回転移動するため、車体側とステアリング側とを電気的に接続する場合、ケーブルリールによる接続や非接触カップラ手段等による恒久的接続が用いられていた。   By the way, each component arranged on the vehicle body side of the automobile has a fixed arrangement position. However, each component arranged on the steering side rotates and moves corresponding to the steering operation. Therefore, when the vehicle body side and the steering side are electrically connected, connection by a cable reel or permanent connection by a non-contact coupler means or the like has been used.

これらの恒久的接続は、各種の部品が必要であった。又、配線がわずらわしく、車体側とステアリング側とを電気的に接続し、所定の個所に各種の部品を取り付けるのに多くの工数を要していた。   These permanent connections required various parts. Also, the wiring is troublesome, and it takes a lot of man-hours to electrically connect the vehicle body side and the steering side and to attach various parts to predetermined locations.

前述の問題を解決するために、車体側機構とステアリング側機構との間を非接触状態で結合した場合に、ステアリング側機構に配置した電力蓄積用コンデンサに常時電力を蓄積させることを可能にしたステアリング装置が発明されている(例えば、特許文献1参照)。
特開2001−114067号公報
In order to solve the above-mentioned problem, when the vehicle body side mechanism and the steering side mechanism are coupled in a non-contact state, it is possible to always store power in the power storage capacitor disposed in the steering side mechanism. A steering device has been invented (see, for example, Patent Document 1).
JP 2001-114067 A

例えば、エアバッグ装置はステアリング側、すなわち運転席に設けられると共に、エアバッグ装置が助手席に設けられる場合がある。更には、サイドエアバッグ装置が設けられる場合もある。このような複数のエアバッグ装置が設けられる車両に対して、特許文献1による装置は、車体側機構とステアリング側機構との間を非接触状態で結合しているので、接続されるべきエアバッグを車体側から確認することが困難である。接続されるべきエアバッグを車体側から確認できることが好ましい。そして、このことが本発明の課題といってよい。   For example, the airbag device may be provided on the steering side, that is, the driver's seat, and the airbag device may be provided on the passenger seat. Furthermore, a side airbag device may be provided. For a vehicle provided with such a plurality of airbag devices, the device according to Patent Document 1 connects the vehicle body side mechanism and the steering side mechanism in a non-contact state. It is difficult to confirm from the vehicle body side. It is preferable that the airbag to be connected can be confirmed from the vehicle body side. This may be the subject of the present invention.

本発明は、以上のような課題に鑑みてなされたものであり、車体側とステアリング側との間を非接触状態で結合した場合に、接続されるべきエアバッグを車体側から確認可能なエアバッグ装置を提供することを目的とする。   The present invention has been made in view of the above-described problems. When the vehicle body side and the steering side are coupled in a non-contact state, the airbag to be connected can be confirmed from the vehicle body side. An object is to provide a bag device.

上記目的を達成するために、本発明は以下のようなエアバッグ装置を提供する。   In order to achieve the above object, the present invention provides the following airbag apparatus.

(1) エアバッグを作動する電力及びエアバッグの作動信号を車体側からエアバッグ側に非接触で伝送可能なエアバッグ装置であって、前記エアバッグ側は、当該エアバッグ側が有するエアバッグの固有情報を保有するRFICタグを備え、前記車体側は、前記エアバッグの固有情報と照合するための認証用固有情報を記憶する記憶手段と、前記RFICタグが返信する前記エアバッグの固有情報を受信可能な無線通信部と、受信した前記エアバッグの固有信号と前記認証用固有情報とを照合する制御部と、を備えるエアバッグ装置。   (1) An airbag device capable of transmitting power for operating an airbag and an operation signal of the airbag from the vehicle body side to the airbag side in a non-contact manner, wherein the airbag side is an airbag of the airbag side. An RFIC tag having unique information is provided, and the vehicle body side stores storage means for storing authentication unique information for collation with the unique information of the airbag, and unique information of the airbag returned by the RFIC tag. An airbag device comprising: a receivable wireless communication unit; and a control unit that collates the received unique signal of the airbag with the authentication unique information.

(1)の発明によるエアバッグ装置は、エアバッグを作動する電力及びエアバッグの作動信号を車体側からエアバッグ側に非接触で伝送可能なエアバッグ装置であって、エアバッグ側は、エアバッグの固有情報を保有するRFICタグを備え、車体側は、エアバッグの固有情報と照合するための認証用固有情報を記憶する記憶手段と、RFICタグが返信するエアバッグの固有情報を受信可能な無線通信部と、受信したエアバッグの固有信号と認証用固有情報とを照合する制御部と、を備えているので、車体側とエアバッグ側との間を非接触状態で結合した場合に、接続されるべきエアバッグを車体側から容易に確認できる。   The airbag apparatus according to the invention of (1) is an airbag apparatus that can transmit the power for operating the airbag and the activation signal of the airbag from the vehicle body side to the airbag side in a non-contact manner. Equipped with an RFIC tag that holds bag-specific information, the vehicle body side can receive storage-specific authentication information for collation with airbag-specific information, and the airbag-specific information returned by the RFIC tag Wireless communication unit and a control unit that collates the received unique signal of the airbag and the unique information for authentication, so when the vehicle body side and the airbag side are coupled in a non-contact state The airbag to be connected can be easily confirmed from the vehicle body side.

(2) 前記制御部は、車体側のイグニッションスイッチがオンされると、前記記憶手段に記憶された前記認証用固有情報を読み取り、前記無線通信部を介して前記エアバッグの固有情報を受信して前記固有信号と前記認証用固有情報とを照合する(1)記載のエアバッグ装置。   (2) When the ignition switch on the vehicle body side is turned on, the control unit reads the authentication specific information stored in the storage unit and receives the specific information of the airbag via the wireless communication unit. The airbag device according to (1), wherein the unique signal and the unique information for authentication are collated.

(2)の発明によるエアバッグ装置は、車体側とエアバッグ側との間を非接触状態で結合した場合に、車体側のイグニッションスイッチがオンされると、接続されるべきエアバッグを車体側から容易に確認できる。   In the airbag device according to the invention of (2), when the vehicle body side and the airbag side are coupled in a non-contact state, when the vehicle body side ignition switch is turned on, the airbag to be connected is Can be easily confirmed.

発明によるエアバッグ装置は、車体側とエアバッグ側との間を非接触状態で結合した場合に、接続されるべきエアバッグを車体側から容易に認証できる。   The airbag device according to the invention can easily authenticate the airbag to be connected from the vehicle body side when the vehicle body side and the airbag side are coupled in a non-contact state.

以下、本発明を実施するための最良の形態について図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

図1は、本発明によるエアバッグ装置の一実施形態の構成を示す機能ブロック図である。図2は、前記実施形態によるエアバッグ装置の部分構成図である。図3は、前記実施形態によるエアバッグ装置のステアリング側の部分斜視分解組立図である。   FIG. 1 is a functional block diagram showing the configuration of an embodiment of an airbag apparatus according to the present invention. FIG. 2 is a partial configuration diagram of the airbag apparatus according to the embodiment. FIG. 3 is a partial perspective exploded view of a steering side of the airbag apparatus according to the embodiment.

図1において、本発明によるエアバッグ装置は、車両側Vには、衝撃センサ110と、制御部120と、記憶手段130と、無線通信部140と、インバータ手段160と、を備えている。又、ステアリング側Sには、RFICタグ150と、整流手段180と、電力蓄積用コンデンサ200と、点火回路210と、スクイブ220と、を備えている。インバータ手段160と整流手段180は電磁カップリング手段170で非接触に結合されている。制御部120と、記憶手段130及びインバータ手段160は車載LAN400で相互に接続されている。   In FIG. 1, the airbag apparatus according to the present invention includes an impact sensor 110, a control unit 120, a storage unit 130, a wireless communication unit 140, and an inverter unit 160 on the vehicle side V. Further, the steering side S includes an RFIC tag 150, a rectifying means 180, a power storage capacitor 200, an ignition circuit 210, and a squib 220. The inverter means 160 and the rectifying means 180 are coupled in a non-contact manner by the electromagnetic coupling means 170. The control unit 120, the storage unit 130, and the inverter unit 160 are connected to each other via the in-vehicle LAN 400.

図1において、衝撃センサ110は、車両に加えられた衝撃が予め定められた値を越えた場合に作動信号を発生する。この作動信号は制御部120に送出され、制御部120からインバータ手段160と電磁カップリング手段170を介して、点火回路210に伝送され、蓄電手段である電力蓄積用コンデンサ200に蓄えられている電力がスクイブ220に供給される。スクイブ220に電力が加えられると、直ちにエアバッグ内の火薬が点火してエアバッグが展開する。なお、衝撃センサ110による作動信号は、インバータ手段160から整流手段180へ伝送するときに、後述する電力と周波数を変えている。   In FIG. 1, the impact sensor 110 generates an operation signal when the impact applied to the vehicle exceeds a predetermined value. This operation signal is sent to the control unit 120, transmitted from the control unit 120 to the ignition circuit 210 via the inverter means 160 and the electromagnetic coupling means 170, and stored in the power storage capacitor 200 as the power storage means. Is supplied to the squib 220. As soon as power is applied to the squib 220, the explosive in the airbag is ignited and the airbag is deployed. In addition, when the operation signal by the impact sensor 110 is transmitted from the inverter means 160 to the rectifying means 180, the power and frequency described later are changed.

図1において、通常は車両に備え付けられたバッテリーである直流電源にインバータ手段160が接続され、直流が低周波(通常300HZ以下)の交流に変換される。変換された交流は電磁カップリング手段170により、ステアリング側Sに交流電力が伝送される。伝送された電力は整流手段180により直流に整流され、電力蓄積用コンデンサ200に充電される。通常の状態では、電力蓄積用コンデンサ200には充電された状態で待機している。   In FIG. 1, inverter means 160 is connected to a DC power source that is usually a battery installed in a vehicle, and the DC is converted into an AC having a low frequency (usually 300 Hz or less). The converted AC is transmitted to the steering side S by the electromagnetic coupling means 170. The transmitted power is rectified to direct current by the rectifying means 180 and charged to the power storage capacitor 200. In a normal state, the power storage capacitor 200 is on standby in a charged state.

このように、発明によるエアバッグ装置は、エアバッグを作動する電力及びエアバッグの作動信号を車体側からステアリング側に非接触で伝送可能としている。したがって、配線がわずらわされることなく、車体側とステアリング側とを電気的に接続し、所定の個所に各種の部品を取り付けるのに多くの工数を要することも低減される。   As described above, the airbag device according to the invention can transmit the electric power for operating the airbag and the activation signal of the airbag in a non-contact manner from the vehicle body side to the steering side. Accordingly, it is possible to reduce the need for a large number of man-hours for electrically connecting the vehicle body side and the steering side and attaching various parts to predetermined locations without troublesome wiring.

更に、図1において、RFICタグ150は、当該ステアリング側Sが有するエアバッグの固有情報を保有している。RFICタグ150は、アンテナ152と図示されない制御回路及び電源用コンデンサを内蔵している。無線通信部140から特定の周波数が発信されると、アンテナ152で受信した電磁波から電力を得て制御回路で整流して、電源用コンデンサに充電し、制御回路の動作用電源となると共に、RFICタグ150内の固有情報(例えば、内部に記憶された識別子)をアンテナ152から返信する。   Further, in FIG. 1, the RFIC tag 150 holds unique information of the airbag that the steering side S has. The RFIC tag 150 includes an antenna 152, a control circuit (not shown), and a power supply capacitor. When a specific frequency is transmitted from the wireless communication unit 140, electric power is obtained from the electromagnetic wave received by the antenna 152, rectified by the control circuit, charged to the power supply capacitor, and becomes a power supply for operation of the control circuit. Unique information in the tag 150 (for example, an identifier stored therein) is returned from the antenna 152.

図1において、記憶手段130は、エアバッグの固有情報と照合するための認証用固有情報を記憶している。認証用固有情報は、例えば、符号化された識別子である。無線通信部140は、RFICタグ150が返信するエアバッグの固有情報を受信可能としている。   In FIG. 1, the storage means 130 stores authentication unique information for collation with the airbag unique information. The authentication specific information is, for example, an encoded identifier. The wireless communication unit 140 can receive the unique information of the airbag returned from the RFIC tag 150.

図1において、制御部120は、図示されないイグニッションスイッチをオンすると、記憶手段130に記憶された認証用固有情報を読み取り、かつRFICタグ150が保有するエアバッグの固有情報を無線通信部140が受信し、受信したエアバッグの固有信号と認証用固有情報とを照合する。そして、接続されるべきエアバッグを車体側から容易に確認できる。   In FIG. 1, when an ignition switch (not shown) is turned on, the control unit 120 reads the authentication specific information stored in the storage unit 130 and the wireless communication unit 140 receives the specific information of the airbag held by the RFIC tag 150. Then, the received unique signal of the airbag and the unique information for authentication are collated. And the airbag which should be connected can be confirmed easily from the vehicle body side.

例えば、接続されるべきエアバッグが異なっていた場合は、表示器に警報表示してもよく、警報音を発信してもよく、警報表示と警報音を併用してもよい。又、本発明によるエアバッグ装置は、製造ラインにおける検査工程に役立てることもできる。   For example, when the airbag to be connected is different, an alarm may be displayed on the display, an alarm sound may be transmitted, and the alarm display and the alarm sound may be used in combination. The airbag device according to the present invention can also be used for an inspection process in a production line.

図2及び図3は、前記構成品の一部の実体的な構成を示しており、図2及び図3において、RFICタグ150は、円盤状の形状となっており、RFICタグ150の直下に電力蓄積用コンデンサ200が配置されている。電力蓄積用コンデンサ200は、エアバッグの動作の信頼性を高めるために、1次ナノキャパシタ202と2次ナノキャパシタ204との2つのコンデンサにより構成されている。図3の実施形態において、1次及び2次ナノキャパシタ202・204は、ナノテクノロジーを用い、従来のキャパシタよりも蓄電効率、エネルギー密度を高めたものであり、狭い空間にて高容量のコンデンサを実現することができる。   2 and 3 show a substantial configuration of a part of the component. In FIGS. 2 and 3, the RFIC tag 150 has a disc shape, and is directly below the RFIC tag 150. A power storage capacitor 200 is disposed. The power storage capacitor 200 includes two capacitors, a primary nanocapacitor 202 and a secondary nanocapacitor 204, in order to increase the reliability of the airbag operation. In the embodiment of FIG. 3, the primary and secondary nanocapacitors 202 and 204 use nanotechnology and have higher storage efficiency and energy density than conventional capacitors. Can be realized.

図2及び図3において、1次ナノキャパシタ202と2次ナノキャパシタ204との間には、点火回路210が配置されている。又、電力蓄積用コンデンサ200の下部には充電用回路が配置されている。充電回路も信頼性を高めるために充電回路192と充電回路194との2つの充電回路により構成されている。点火回路210の信号は静電気や電磁波による誤動作を防止するためにフェライトコア212を介してエアバッグ収納体300の中に収められたスクイブ220に接続されている。   2 and 3, the ignition circuit 210 is disposed between the primary nanocapacitor 202 and the secondary nanocapacitor 204. A charging circuit is disposed below the power storage capacitor 200. The charging circuit is also composed of two charging circuits, a charging circuit 192 and a charging circuit 194, in order to increase reliability. A signal from the ignition circuit 210 is connected to a squib 220 housed in the airbag housing 300 through a ferrite core 212 in order to prevent malfunction due to static electricity or electromagnetic waves.

なお、本発明による実施形態において、車体側から認証されるエアバッグはステアリングに備えられているとして説明したが、本発明によるエアバッグ装置のエアバッグは、ステアリングに備えられるものに限定されることなく、インパネに備えられる助手席用のエアバッグやシートに備えられるサイドエアバッグなど、全てのエアバッグに適用できる。   In the embodiment according to the present invention, the airbag authenticated from the vehicle body side is described as being provided in the steering, but the airbag of the airbag device according to the present invention is limited to that provided in the steering. In addition, the present invention can be applied to all airbags such as a passenger airbag provided in an instrument panel and a side airbag provided in a seat.

又、本発明による実施形態において、イグニッションスイッチをオンすると、接続されるべきエアバッグを車体側から容易に確認できるとしたが、イグニッションスイッチがオンされた時だけではなく、イグニッションスイッチがオンされた後にエアバッグが取り外されたことや、別の部品が取り付けられたことを判定するために、エアバッグに備わるRFICタグが保有する固有情報と認証用固有情報とを常時照合してもよい。そして、この照合結果を警報表示してもよい。   Further, in the embodiment according to the present invention, when the ignition switch is turned on, the airbag to be connected can be easily confirmed from the vehicle body side. However, not only when the ignition switch is turned on, but also when the ignition switch is turned on. In order to determine later that the airbag has been removed or that another part has been attached, the unique information held by the RFIC tag included in the airbag may be constantly compared with the unique information for authentication. Then, this collation result may be displayed as an alarm.

以上、本発明の実施形態を用いて説明したが、本発明の技術的範囲は上記実施形態に記載の範囲には限定されない。上記実施形態に、多様な変更または改良を加えることができる。そのような変更または改良を加えた形態も本発明の技術的範囲に含まれ得ることが、特許請求の範囲の記載から明らかである。   As mentioned above, although demonstrated using embodiment of this invention, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

本発明によるエアバッグ装置の一実施形態の構成を示す機能ブロック図である。It is a functional block diagram which shows the structure of one Embodiment of the airbag apparatus by this invention. 前記実施形態によるエアバッグ装置の部分構成図である。It is a partial block diagram of the airbag apparatus by the said embodiment. 前記実施形態によるエアバッグ装置のステアリング側の部分斜視分解組立図である。It is a partial perspective exploded view of the steering side of the airbag device according to the embodiment.

符号の説明Explanation of symbols

120 制御部
130 記憶手段
140 無線通信部
150 RFICタグ
S ステアリング側
V 車体側
DESCRIPTION OF SYMBOLS 120 Control part 130 Memory | storage means 140 Wireless communication part 150 RFIC tag S Steering side V Vehicle body side

Claims (2)

エアバッグを作動する電力及びエアバッグの作動信号を車体側からエアバッグ側に非接触で伝送可能なエアバッグ装置であって、
前記エアバッグ側は、当該エアバッグ側が有するエアバッグの固有情報を保有するRFICタグを備え、
前記車体側は、前記エアバッグの固有情報と照合するための認証用固有情報を記憶する記憶手段と、前記RFICタグが返信する前記エアバッグの固有情報を受信可能な無線通信部と、受信した前記エアバッグの固有信号と前記認証用固有情報とを照合する制御部と、を備えるエアバッグ装置。
An airbag device capable of transmitting power to operate an airbag and an operation signal of the airbag from the vehicle body side to the airbag side in a non-contact manner,
The airbag side includes an RFIC tag that holds unique information of the airbag that the airbag side has,
The vehicle body side has received storage means for storing authentication unique information for collation with the unique information of the airbag, a wireless communication unit capable of receiving the unique information of the airbag returned by the RFIC tag, and received An airbag device comprising: a control unit that collates the unique signal of the airbag and the unique information for authentication.
前記制御部は、車体側のイグニッションスイッチがオンされると、前記記憶手段に記憶された前記認証用固有情報を読み取り、前記無線通信部を介して前記エアバッグの固有情報を受信して前記固有信号と前記認証用固有情報とを照合する請求項1記載のエアバッグ装置。   When the ignition switch on the vehicle body is turned on, the control unit reads the authentication specific information stored in the storage unit, receives the unique information of the airbag via the wireless communication unit, and The airbag device according to claim 1, wherein a signal is compared with the authentication specific information.
JP2005249246A 2005-08-30 2005-08-30 Airbag device Expired - Fee Related JP4546355B2 (en)

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US10611330B2 (en) 2016-05-13 2020-04-07 Joyson Safety Systems Acquisition Llc Smart initiator assembly

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