JP2005067272A - Ceiling structure of airbag-equipped vehicle - Google Patents

Ceiling structure of airbag-equipped vehicle Download PDF

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JP2005067272A
JP2005067272A JP2003296593A JP2003296593A JP2005067272A JP 2005067272 A JP2005067272 A JP 2005067272A JP 2003296593 A JP2003296593 A JP 2003296593A JP 2003296593 A JP2003296593 A JP 2003296593A JP 2005067272 A JP2005067272 A JP 2005067272A
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airbag
ceiling
panel member
occupant
vehicle
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Tsuneaki Chatani
恒明 茶谷
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a ceiling structure of an airbag-equipped vehicle for preventing a part of an air bag deployed inside a compartment from escaping backward from an interval between an occupant head part and a ceiling. <P>SOLUTION: Since a panel member 11 installed near a ceiling 3 is turned downward to reduce a distance between a head of an occupant M and a ceiling 3 when detecting collision of the vehicle, or when pre-detecting collision of the vehicle, a part of an air bag 5 developed inside the compartment does not escape backward. Accordingly, an air bag 5 and an inflator 6 can be miniaturized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、車室内側へ展開したエアバッグの一部が、乗員頭部と天井との間から後方へ逃げるのを防止するエアバッグ装備車の天井構造に関する。   The present invention relates to a ceiling structure of an airbag-equipped vehicle that prevents a part of an airbag deployed toward the interior of a vehicle from escaping backward from between an occupant head and a ceiling.

助手席側のインストルメントパネルの内部には、折りたたみ状態のエアバッグと、それを膨張させるためのガスを噴出するインフレータとが一緒に内蔵されている。そして、車両衝突時にインフレータのガスによりエアバッグを膨張させる。膨張したエアバッグはインストルメントパネルから車室内側へ向けて展開し、展開したエアバッグにより前倒れする助手席側の乗員を受け止めて保護するようになっている（例えば、特許文献１。）。
特開平８−２４４５５５号公報 Inside the instrument panel on the passenger seat side, a folded airbag and an inflator for injecting gas for inflating the airbag are housed together. Then, the airbag is inflated by the gas of the inflator when the vehicle collides. The inflated airbag is deployed from the instrument panel toward the vehicle interior side, and receives and protects the passenger on the passenger seat side that is tilted forward by the deployed airbag (for example, Patent Document 1).
JP-A-8-244555

しかしながら、このような従来の技術にあっては、乗員頭部と天井との間に、乗員の体格や着座状態等に応じて変化する所定間隔が存在するため、車室内側へ展開したエアバッグの一部が後方へ逃げることになる。逃げた部分はエアバッグとしての機能を果たさないため、エアバッグの容積としては、その分よけいに増加させておく必要がある。従って、エアバッグ自体の大型化と、エアバッグにガスに噴出するインフレータの大型化を招き、インストルメントパネル内部における限られた空間内へのエアバッグ及びインフレータの格納が困難になる。   However, in such a conventional technique, there is a predetermined interval that changes depending on the physique and seating state of the occupant between the occupant head and the ceiling. A part of will escape backwards. Since the escaped portion does not function as an airbag, it is necessary to increase the volume of the airbag accordingly. Therefore, the size of the airbag itself and the size of the inflator that jets gas into the airbag are increased, and it is difficult to store the airbag and the inflator in a limited space inside the instrument panel.

本発明は、このような従来の技術に着目してなされたものであり、車室内側へ展開したエアバッグの一部が乗員頭部と天井との間から後方へ逃げるのを防止するエアバッグ装備車の天井構造を提供するものである。   The present invention has been made paying attention to such a conventional technique, and an airbag that prevents a part of the airbag deployed toward the passenger compartment side from escaping rearward from between the passenger's head and the ceiling is provided. It provides a ceiling structure for equipped vehicles.

請求項１記載の発明は、助手席側のインストルメントパネルに車両衝突時に車室内側へ展開して乗員を保護するエアバッグが内蔵されたエアバッグ装備車の天井構造であって、前記助手席上方の天井付近に、下方へ向けて回動自在なパネル部材を設け、該パネル部材を駆動機構により通常時は天井に略沿った状態で保持し、車両衝突検知時又は車両衝突事前検知時に下方へ回動させて乗員頭部と天井との間の距離を減少させてなることを特徴とする。   The invention according to claim 1 is a ceiling structure of a vehicle equipped with an air bag in which an air bag that is deployed to the passenger compartment side and protects an occupant in the case of a vehicle collision is built in an instrument panel on the front passenger seat, A panel member that can rotate downward is provided in the vicinity of the upper ceiling, and the panel member is normally held along the ceiling by a drive mechanism, and is lowered when a vehicle collision is detected or when a vehicle collision is detected in advance. The distance between the occupant's head and the ceiling is reduced by turning to the right.

請求項２記載の発明は、パネル部材及び駆動機構をサンバイザに収納したことを特徴とする。   The invention according to claim 2 is characterized in that the panel member and the drive mechanism are housed in a sun visor.

請求項３記載の発明は、パネル部材が、下方へ回動させた状態で、後方へは折れにくく、前方へのみ折れ易い二つ折り構造であることを特徴とする。   The invention according to claim 3 is characterized in that the panel member has a two-fold structure which is less likely to be folded backward and easy to fold forward only when rotated downward.

請求項４記載の発明は、乗員の体格又は着座状態の少なくとも一方を検出する乗員状態検知手段と、該乗員状態検知手段からの信号により乗員頭部と天井との間の距離を判断する判断手段と、該判断手段からの信号に基づいて駆動手段によりパネル部材を下方へ回動させる量を制御する制御手段を設けたことを特徴とする。   According to a fourth aspect of the present invention, there is provided an occupant state detection means for detecting at least one of the occupant's physique or a sitting state, and a determination means for determining a distance between the occupant head and the ceiling based on a signal from the occupant state detection means. And a control means for controlling the amount by which the panel member is rotated downward by the driving means based on a signal from the judging means.

請求項１記載の発明によれば、天井付近に設けられたパネル部材が、車両衝突検知時又は車両衝突事前検知時に、下方へ回動して乗員頭部と天井との間の距離を減少させてなるため、車室内側へ展開したエアバッグの一部が後方へ逃げにくくなる。従って、エアバッグ及びインフレータの小型化を図ることができる。   According to the first aspect of the present invention, the panel member provided near the ceiling rotates downward to reduce the distance between the occupant's head and the ceiling at the time of vehicle collision detection or vehicle collision pre-detection. Therefore, a part of the airbag deployed toward the vehicle interior side is difficult to escape backward. Accordingly, the airbag and the inflator can be reduced in size.

請求項２記載の発明によれば、パネル部材及び駆動機構をサンバイザに収納したため、天井部分の構造は変更せずに済み、既存車両構造への適用が容易である。   According to the second aspect of the present invention, since the panel member and the drive mechanism are housed in the sun visor, the structure of the ceiling portion does not need to be changed, and the application to the existing vehicle structure is easy.

請求項３記載の発明によれば、パネル部材が二つ折り構造で、後方へ折れにくいため、エアバッグが後方へ逃げるのを確実に防止できる一方、前方へは折れ易いため、乗員頭部がパネル部材の下端部に万一接触したとしても、乗員頭部に与える違和感は少ない。   According to the third aspect of the present invention, the panel member has a double-fold structure and is difficult to fold backward, so that the airbag can be reliably prevented from escaping backward, while the passenger's head is easy to fold forward. Even if it contacts the lower end of the member, there is little discomfort given to the passenger's head.

請求項４記載の発明によれば、乗員の体格や着座状態等の乗員状態に基づいて、パネル部材を下方へ回動させる量を最適に制御するため、エアバッグの逃げ量の減少と、乗員頭部のパネル部材への接触防止とを図ることができる。   According to the invention described in claim 4, in order to optimally control the amount by which the panel member is rotated downward based on the occupant state such as the physique of the occupant and the seated state, It is possible to prevent the head from contacting the panel member.

車室内側へ展開したエアバッグの一部が乗員頭部と天井との間から後方へ逃げるのを防止するという目的を、助手席上方の天井付近に、下方へ向けて回動自在なパネル部材を設け、該パネル部材を駆動機構により通常時は天井に略沿った状態で保持し、車両衝突検知時又は車両衝突事前検知時に下方へ回動させて乗員頭部と天井との間を減少させてなることで、実現した。   Panel member that can rotate downward near the ceiling above the passenger seat for the purpose of preventing a part of the airbag deployed toward the passenger compartment from escaping backward from between the passenger's head and the ceiling The panel member is normally held in a state substantially along the ceiling by the drive mechanism, and is rotated downward at the time of vehicle collision detection or vehicle collision pre-detection to reduce the space between the occupant head and the ceiling. This has been realized.

以下、本発明の第１実施例を図１〜図８に基づいて説明する。図１は自動車の車室内の状態を示す概略図で、車室内の前方にはインストルメントパネル１が設置されている。インストルメントパネル１の上方にはフロントウィンドウパネル２が設けられ、フロントウィンドウパネル２の上端からは後方へ向けて天井３が形成されている。   Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic view showing a state of a passenger compartment of an automobile, and an instrument panel 1 is installed in front of the passenger compartment. A front window panel 2 is provided above the instrument panel 1, and a ceiling 3 is formed from the upper end of the front window panel 2 toward the rear.

インストルメントパネル１における左側後方には助手席４が設置されており、助手席４には乗員Ｍが着座している。この助手席４の前方に位置するインストルメントパネル１の内部には、折りたたみ状態のエアバッグ５と、それを膨張させるためのガスを噴出するインフレータ６とが一緒に内蔵されている。   A passenger seat 4 is installed behind the left side of the instrument panel 1, and an occupant M is seated on the passenger seat 4. Inside the instrument panel 1 located in front of the passenger seat 4, a folded airbag 5 and an inflator 6 for injecting gas for inflating the airbag 5 are housed together.

このエアバッグ５は、車両前部に数カ所配置された車両衝突検知手段７が車両衝突状態を検知した時に、インフレータ６からガスが噴出されて膨張する。膨張したエアバッグ５は、インストルメントパネル１の表面に予め設定された開裂部を押し破って車室内側へ展開し、前倒れしてくる乗員Ｍを受け止めて保護するようになっている。   The airbag 5 is inflated by injecting gas from the inflator 6 when the vehicle collision detection means 7 arranged at several locations in the front of the vehicle detects the vehicle collision state. The inflated airbag 5 is deployed to the inside of the passenger compartment by pushing through a predetermined opening on the surface of the instrument panel 1, and receives and protects the occupant M falling forward.

また、この自動車には、車両衝突検知手段７の他に、車両が実際に衝突する前段階において衝突が避けられない状況を事前に検知する衝突事前検知手段８も設けられてる。衝突事前検知手段８からの信号により、図示せぬシートベルトの巻き取り装置を作動させ、乗員拘束性能を更に高めることができる。   In addition to the vehicle collision detection means 7, the automobile is also provided with a collision pre-detection means 8 for detecting in advance a situation in which a collision is unavoidable in the stage before the vehicle actually collides. A seat belt retractor (not shown) is actuated by a signal from the collision pre-detection means 8 to further enhance the occupant restraint performance.

助手席４の上方の天井３付近にはサンバイザ９が設けられている。このサンバイザ９の下面には凹部１０が形成され（図５参照）、凹部１０内にはパネル部材１１と駆動機構１２が設けられている。   A sun visor 9 is provided near the ceiling 3 above the passenger seat 4. A recess 10 is formed on the lower surface of the sun visor 9 (see FIG. 5), and a panel member 11 and a drive mechanism 12 are provided in the recess 10.

パネル部材１１は、２枚の樹脂製パネル１３を２つのヒンジ１４で連結した構造をしている。２枚のパネル１３は対応する端面同士を突き当てた状態とされ、その上面側に２つのヒンジ１４が取付けられている。従って、このパネル部材１１は、ヒンジ１４側へは端面同士が突き当たることにより折れにくく、ヒンジ１４の反対側へは端面同士が離れるため折れ易い。   The panel member 11 has a structure in which two resin panels 13 are connected by two hinges 14. The two panels 13 are in a state where the corresponding end faces are in contact with each other, and two hinges 14 are attached to the upper surface side. Therefore, the panel member 11 is not easily broken when the end surfaces abut against the hinge 14 side, and is easily broken because the end surfaces are separated from each other on the opposite side of the hinge 14.

サンバイザ９の凹部１０には、前端の左右両側に回動孔１５（図５参照）が形成されている。この回動孔１５に、パネル部材１１の前端に左右へ向けて形成した回動軸１６が回動自在に挿入されている。従って、パネル部材１１は前端の回動軸１６を中心に全体が下方へ回動自在となる。   In the concave portion 10 of the sun visor 9, rotation holes 15 (see FIG. 5) are formed on both the left and right sides of the front end. A rotation shaft 16 formed to the left and right at the front end of the panel member 11 is rotatably inserted into the rotation hole 15. Accordingly, the entire panel member 11 is rotatable downward about the rotation shaft 16 at the front end.

また、サンバイザ９に形成された凹部１０の左右両側には、それぞれレール１７、１８が設けられている。これらのレール１７、１８の後端はロッド１９にて連結され、凹部１０に対しては、このロッド１９を中心に、レール１７、１８全体が下方へ回動自在となっている。左側のレール１７には長手方向に沿う長孔２０が形成され、そこにパネル部材１１の後端から左側へ突出したピン２１が移動自在に挿入されている。   In addition, rails 17 and 18 are provided on the left and right sides of the concave portion 10 formed in the sun visor 9, respectively. The rear ends of the rails 17 and 18 are connected by a rod 19, and the entire rails 17 and 18 are rotatable downward with respect to the recess 10 around the rod 19. A long hole 20 is formed in the left rail 17 along the longitudinal direction, and a pin 21 protruding leftward from the rear end of the panel member 11 is movably inserted therein.

一方、右側のレール１８にはモータ２２で回転自在なネジ棒２３が設けられている。パネル部材１１の後端には右側へ向けて突出した回転ナット２４が設けられている。回転ナット２４は軸回りに回転自在で、この回転ナット２４にネジ棒２３が螺合している。凹部１０に収納されるもののうち、パネル部材１１以外の構造により、この実施例における駆動機構１２が構成される。   On the other hand, the right rail 18 is provided with a screw rod 23 that can be rotated by a motor 22. A rotating nut 24 protruding toward the right side is provided at the rear end of the panel member 11. The rotating nut 24 is rotatable about an axis, and a screw rod 23 is screwed to the rotating nut 24. The drive mechanism 12 in this embodiment is configured by a structure other than the panel member 11 among those housed in the recess 10.

この駆動機構１２のうち、モータ２２は制御手段２５に接続され、制御手段２５からの信号により回転が制御される。この制御手段２５には、前記衝突事前検知手段８からの信号も入力される。そして、制御手段２５は判断手段２６に接続され、判断手段２６は乗員状態検知手段２７に接続されている。   Of the drive mechanism 12, the motor 22 is connected to the control means 25, and the rotation is controlled by a signal from the control means 25. A signal from the collision pre-detection means 8 is also input to the control means 25. The control unit 25 is connected to the determination unit 26, and the determination unit 26 is connected to the occupant state detection unit 27.

乗員状態検知手段２７は、乗員Ｍの体格と着座状態の両方を検出する。乗員Ｍの体格は助手席４のシートクッションに内蔵された圧力センサー用いる。着座状態は、超音波を発信して乗員Ｍの姿勢を検出するバックソナー式のものを用いる。乗員Ｍが前屈み状態かどうか等を検出することができる。判断手段２６は、この乗員状態検知手段２７からの信号により、乗員Ｍの頭部と天井３との間に形成される上方スペースＳの間隔（距離）を判断する。制御手段２５は、この判断手段２６からの信号に基づいてモータ２２の回転数を制御する。   The occupant state detection means 27 detects both the physique and the sitting state of the occupant M. The physique of the passenger M uses a pressure sensor built in the seat cushion of the passenger seat 4. The seating state uses a back sonar type that detects the posture of the occupant M by transmitting an ultrasonic wave. It is possible to detect whether or not the occupant M is bent forward. The determination means 26 determines the interval (distance) of the upper space S formed between the head of the occupant M and the ceiling 3 based on the signal from the occupant state detection means 27. The control means 25 controls the number of revolutions of the motor 22 based on the signal from the judgment means 26.

次に、この実施例の作用を説明する。   Next, the operation of this embodiment will be described.

通常時は、パネル部材１１はサンバイザ９ごと天井３に沿った状態で保持されいる。そして、この状態から、衝突事前検知手段８により、衝突不可避状態が検出されると、その信号が制御手段２５に出力される。制御手段２５には、乗員状態検知手段２７からの信号に基づいて判断された上方スペースＳの間隔情報が予め入力されているため、制御手段２５は、その上方スペースＳに見合う回転数だけ駆動機構１２のモータ２２を回転させる。   Normally, the panel member 11 is held along with the sun visor 9 along the ceiling 3. From this state, when a collision unavoidable state is detected by the collision pre-detection means 8, a signal is output to the control means 25. Since the control unit 25 is preliminarily input with the interval information of the upper space S determined based on the signal from the occupant state detection unit 27, the control unit 25 has a drive mechanism corresponding to the number of rotations corresponding to the upper space S. The twelve motors 22 are rotated.

モータ２２は、パネル部材１１の後端の回転ナット２４を前側へ送る方向へ回転する。パネル部材１１の前端は回動軸１５が回動自在に回動孔１５に挿入されているだけなので前方移動できず、パネル部材１１はネジ棒２３による押し力を下方へ逃がすため、全体が回動軸１６を中心にして下方へ回動する（図２参照）。   The motor 22 rotates in a direction to send the rotating nut 24 at the rear end of the panel member 11 to the front side. The front end of the panel member 11 cannot be moved forward because only the rotation shaft 15 is rotatably inserted into the rotation hole 15, and the panel member 11 releases the pushing force by the screw rod 23 downward. It rotates downward about the moving shaft 16 (see FIG. 2).

このパネル部材１１が回転したことによる下方への突出量Ｄは、制御手段２５により乗員Ｍの体格及び着座状態に相応した最適状態に制御される。すなわち、体格の小さい乗員Ｍ等の場合は、天井３の上方スペースＳが大きくなるため、パネル部材１１の回動角度が大きくなって、下方への突出量Ｄが大きくなる（図６参照）。逆に、体格の大きい乗員Ｍ等の場合は、上方スペースＳが小さくなるため、パネル部材１１の回動角度が小さくなって、下方への突出量Ｄが大きくなる（図７参照）。   The downward projection amount D due to the rotation of the panel member 11 is controlled by the control means 25 to an optimum state corresponding to the physique and seating state of the occupant M. That is, in the case of an occupant M or the like having a small physique, the upper space S of the ceiling 3 is increased, so that the rotation angle of the panel member 11 is increased and the downward projection amount D is increased (see FIG. 6). On the contrary, in the case of an occupant M or the like having a large physique, the upper space S is reduced, so that the rotation angle of the panel member 11 is reduced and the downward projection amount D is increased (see FIG. 7).

このように車両衝突事前検知時の段階で、パネル部材１１が下方へ回動して上方スペースＳを減少させた状態になるため、その後、実際に車両衝突検知手段７が衝突状態を検出して、エアバッグ５が車室内側へ向けて展開した状態になっても、エアバッグ５の一部が上方スペースＳから後方へ逃げることはない（図３の符号５ａで示した部分が従来逃げていた）。このパネル部材１１は２枚のパネル１３による二つ折り状態になっているが、パネル１３の端面同士が付き当てられることにより、パネル部材１１としては後方へは折れない構造になっているため、エアバッグ５の展開力を十分に受け止めて、上方スペースＳから後方への逃げを確実に防止することができる（図３参照）。   As described above, since the panel member 11 is rotated downward to reduce the upper space S at the stage of the vehicle collision pre-detection, the vehicle collision detection means 7 actually detects the collision state after that. Even when the airbag 5 is deployed toward the vehicle interior side, a part of the airbag 5 does not escape backward from the upper space S (the portion indicated by reference numeral 5a in FIG. 3 has escaped conventionally). ) The panel member 11 is folded in two by the two panels 13, but the panel members 11 are structured so as not to be folded backward as the panel members 11 are brought into contact with each other. The unfolding force of the bag 5 can be received sufficiently, and escape from the upper space S to the rear can be surely prevented (see FIG. 3).

従って、従来のように、エアバッグ５の容積を後方へ逃げる分も見こして大きく形成する必要がなく、エアバッグ５の小型化を図れる。また、エアバッグ５が小型になることにより、それを膨張させるインフレータ６の小型化も図れる。   Therefore, unlike the prior art, it is not necessary to increase the size of the airbag 5 so that the volume of the airbag 5 escapes backward, and the airbag 5 can be downsized. Further, since the airbag 5 is downsized, the inflator 6 that inflates the airbag 5 can be downsized.

特に、この実施例では、乗員Ｍの体格や着座状態等の乗員状態に基づいて、パネル部材１１の下方への突出量Ｄを上方スペースＳに合わせた最適状態に制御するため、エアバッグ５の上方スペースＳからの逃げ防止と、乗員Ｍの頭部のパネル部材１１に対する干渉防止の両方を同時に達成することができる。   In particular, in this embodiment, in order to control the downward projecting amount D of the panel member 11 to the optimum state according to the upper space S based on the occupant state such as the physique of the occupant M and the seated state, the airbag 5 Both prevention of escape from the upper space S and prevention of interference with the panel member 11 of the head of the occupant M can be achieved at the same time.

すなわち、パネル部材１１の下方への突出量Ｄを必要以上に大きくすれば、エアバッグ５の上方スペースＳからの逃げは確実に防止できるものの、その代わりに、パネル部材１１の下端部が乗員Ｍの頭部に干渉するおそれが増す。逆に、パネル部材１１の下方の突出量Ｄを小さくすれば、乗員Ｍの頭部へ干渉するおそれは低下するが、上方スペースＳを十分に塞ぐことができない。そこで、この実施例では、パネル部材１１の下方への突出量Ｄを上方スペースＳに合わせて最適に制御することにより、上方スペースＳからの逃げ防止と、パネル部材１１の頭部干渉防止の両立を図った。   That is, if the protrusion amount D downward of the panel member 11 is increased more than necessary, escape from the upper space S of the airbag 5 can be surely prevented, but instead, the lower end portion of the panel member 11 is occupant M. There is an increased risk of interference with the head. On the contrary, if the protrusion amount D below the panel member 11 is reduced, the possibility of interference with the head of the occupant M is reduced, but the upper space S cannot be sufficiently blocked. Therefore, in this embodiment, the amount D of downward projection of the panel member 11 is optimally controlled according to the upper space S, thereby preventing both escape from the upper space S and head interference of the panel member 11. I planned.

尚、車両衝突時における乗員Ｍの挙動により、万一、乗員Ｍの頭部が、パネル部材１１の下端部に当たっても、図８に示すように、乗員Ｍの頭部からの干渉力Ｆによりパネル部材１１は前方へ折れ易いことが可能なため、パネル部材１１から乗員Ｍの頭部に与える反力は少なく、乗員Ｍの頭部保護は図られる。   Even if the head of the occupant M hits the lower end of the panel member 11 due to the behavior of the occupant M at the time of the vehicle collision, the panel is caused by the interference force F from the head of the occupant M as shown in FIG. Since the member 11 can be easily bent forward, the reaction force applied from the panel member 11 to the head of the occupant M is small, and the head of the occupant M can be protected.

変形例として、パネル１３の端面同士の突き当てに、ある程度の角度を持たせておき、パネル部材１１を最初からほんの少しだけ前側へ折れた状態にしておいても良い。そうすれば、乗員Ｍの頭部が当たった場合にパネル部材１１が前側へ折れやすい。   As a modification, a certain angle may be given to the abutment of the end faces of the panel 13 so that the panel member 11 is bent slightly forward from the beginning. If it does so, when the passenger | crew's M head hits, the panel member 11 will be easy to bend to the front side.

また、この実施例では、パネル部材１１及び駆動機構１２をサンバイザ９に収納したため、サンバイザ９を回動させた使用中に、車両衝突が発生することも考えられるが、エアバッグ５はインストルメントパネル１から出た後、フロントウィンドウパネル２に沿って車室内側へ展開するため、このエアバッグ５によりサンバイザ９自体が元の状態に押し戻されるため、前述と同様の効果が得られる。   Further, in this embodiment, since the panel member 11 and the drive mechanism 12 are housed in the sun visor 9, a vehicle collision may occur during use of rotating the sun visor 9, but the airbag 5 is provided with an instrument panel. Since the sun visor 9 itself is pushed back to the original state by the airbag 5 because the airbag 5 is deployed to the vehicle interior side along the front window panel 2 after exiting from 1, the same effect as described above can be obtained.

そして、このように、パネル部材１１及び駆動機構１２をサンバイザ９に設置することにより、天井３部分の構造は変更せずに済み、既存車両構造への適用が容易である。   Thus, by installing the panel member 11 and the drive mechanism 12 in the sun visor 9, the structure of the ceiling 3 portion does not need to be changed, and application to an existing vehicle structure is easy.

以上の説明では、パネル部材１１及び駆動機構１２を、サンバイザ９にの内部に設ける例を示したが、直接天井３に設置しても良い。また、車両衝突事前検知時にパネル部材１１を回動させる例を示したが、衝突事前検知手段８の設置されていない車両では、車両衝突検知手段７による車両衝突検知と同時に、パネル部材１１を回動させるようにしても良い。尚、この場合は、前記実施例よりも高速でパネル部材１１を回動させる必要がある。   In the above description, an example in which the panel member 11 and the drive mechanism 12 are provided in the sun visor 9 has been described, but the panel member 11 and the drive mechanism 12 may be directly installed on the ceiling 3. Moreover, although the example which rotates the panel member 11 at the time of vehicle collision prior detection was shown, in the vehicle in which the collision prior detection means 8 is not installed, the panel member 11 is rotated simultaneously with the vehicle collision detection by the vehicle collision detection means 7. You may make it move. In this case, it is necessary to rotate the panel member 11 at a higher speed than in the above embodiment.

本発明の第１実施例に係る天井構造が設置された車室内側面図。The vehicle interior side view in which the ceiling structure based on 1st Example of this invention was installed. パネル部材が下方へ回動した状態を示す図１相当の車室内側面図。The vehicle interior side view equivalent to FIG. 1 which shows the state which the panel member rotated below. エアバッグが展開した状態を示す図２相当の車室内側面図。FIG. 3 is a side view of the passenger compartment corresponding to FIG. 2 showing a state in which the airbag is deployed. サンバイザの内部構造を示す斜視図。The perspective view which shows the internal structure of a sun visor. サンバイザと内部構造を示す分解斜視図。The disassembled perspective view which shows a sun visor and an internal structure. パネル部材の下方への突出量が大きい場合を示す側面図。The side view which shows the case where the downward protrusion amount of a panel member is large. パネル部材の下方への突出量が小さい場合を示す側面図。The side view which shows the case where the downward protrusion amount of a panel member is small. 乗員頭部との干渉によりパネル部材が前側へ折れた状態を示す側面図。The side view which shows the state in which the panel member was bent to the front side by interference with a passenger | crew head.

符号の説明Explanation of symbols

１ インストルメントパネル
３ 天井
４ 助手席
５ エアバッグ
６ インフレータ
７ 車両衝突検知手段
８ 車両衝突事前検知手段
９ サンバイザ
１１ パネル部材
１２ 駆動機構
１４ ヒンジ
２５ 制御手段
２６ 判断手段
２７ 乗員状態検知手段
Ｍ 乗員
Ｓ 上方スペース
Ｄ パネル部材の下方突出量
Ｆ 乗員頭部の干渉力 DESCRIPTION OF SYMBOLS 1 Instrument panel 3 Ceiling 4 Passenger seat 5 Air bag 6 Inflator 7 Vehicle collision detection means 8 Vehicle collision prior detection means 9 Sun visor 11 Panel member 12 Drive mechanism 14 Hinge 25 Control means 26 Judgment means 27 Crew state detection means M Crew S Upper Space D Projection amount of panel member F Interference force of occupant head

Claims (4)

助手席側のインストルメントパネルに車両衝突時に車室内側へ展開して乗員を保護するエアバッグが内蔵されたエアバッグ装備車の天井構造であって、
前記助手席上方の天井付近に、下方へ向けて回動自在なパネル部材を設け、該パネル部材を駆動機構により通常時は天井に略沿った状態で保持し、車両衝突検知時又は車両衝突事前検知時に下方へ回動させて乗員頭部と天井との間の距離を減少させてなることを特徴とするエアバッグ装備車の天井構造。 A ceiling structure of a vehicle equipped with an airbag, in which an airbag that deploys to the passenger compartment side to protect an occupant is developed on the instrument panel on the passenger seat side when the vehicle collides,
A panel member that is rotatable downward is provided near the ceiling above the passenger seat, and the panel member is normally held substantially along the ceiling by a drive mechanism so that a vehicle collision is detected or a vehicle collision is detected in advance. A ceiling structure of a vehicle equipped with an airbag, wherein the distance between the head of the passenger and the ceiling is reduced by rotating downward at the time of detection. 請求項１記載のエアバッグ装備車の天井構造であって、
パネル部材及び駆動機構をサンバイザに収納したことを特徴とするエアバッグ装備車の天井構造。 The ceiling structure of the air bag equipped vehicle according to claim 1,
A ceiling structure of a vehicle equipped with an airbag, wherein a panel member and a drive mechanism are housed in a sun visor. 請求項１又は請求項２記載のエアバッグ装備車の天井構造であって、
パネル部材が、下方へ回動させた状態で、後方へは折れにくく、前方へのみ折れ易い二つ折り構造であることを特徴とするエアバッグ装備車の天井構造。 A ceiling structure of a vehicle equipped with an airbag according to claim 1 or claim 2,
A ceiling structure of a vehicle equipped with an airbag, characterized in that the panel member has a double-folded structure that is less likely to be folded backward and easy to fold forward only when rotated downward. 請求項１〜３のいずれか１項に記載のエアバッグ装備車の天井構造であって、
乗員の体格又は着座状態の少なくとも一方を検出する乗員状態検知手段と、該乗員状態検知手段からの信号により乗員頭部と天井との間の距離を判断する判断手段と、該判断手段からの信号に基づいて駆動手段によりパネル部材を下方へ回動させる量を制御する制御手段を設けたことを特徴とするエアバッグ装備車の天井構造。 It is a ceiling structure of an air bag equipment car given in any 1 paragraph of Claims 1-3,
An occupant state detection means for detecting at least one of the physique or sitting state of the occupant, a determination means for determining the distance between the occupant head and the ceiling based on a signal from the occupant state detection means, and a signal from the determination means And a control means for controlling the amount by which the panel member is rotated downward by the driving means based on the above.
JP2003296593A 2003-08-20 2003-08-20 Ceiling structure of airbag-equipped vehicle Pending JP2005067272A (en)

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US7971901B2 (en) 2007-09-14 2011-07-05 Kanto Auto Works, Ltd. Airbag apparatus
US8267424B2 (en) 2007-09-14 2012-09-18 Toyota Motor East Japan, Inc. Airbag
US8353529B2 (en) 2007-09-16 2013-01-15 Toyota Motor East Japan, Inc. Airbag apparatus
US8702122B2 (en) 2007-09-16 2014-04-22 Toyota Motor East Japan, Inc. Airbag
KR101502459B1 (en) * 2007-02-08 2015-03-13 아우토리브 디벨롭먼트 아베 Airbag, Airbag module and motor vehicle
JP2017178263A (en) * 2016-03-31 2017-10-05 トヨタ自動車株式会社 Occupant protection device
US11420583B1 (en) 2021-02-04 2022-08-23 Ford Global Technologies, Llc Airbag assembly supported by roof mounted pivotable base

Cited By (11)

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Publication number Priority date Publication date Assignee Title
KR101502459B1 (en) * 2007-02-08 2015-03-13 아우토리브 디벨롭먼트 아베 Airbag, Airbag module and motor vehicle
US7971901B2 (en) 2007-09-14 2011-07-05 Kanto Auto Works, Ltd. Airbag apparatus
US8267424B2 (en) 2007-09-14 2012-09-18 Toyota Motor East Japan, Inc. Airbag
US8353529B2 (en) 2007-09-16 2013-01-15 Toyota Motor East Japan, Inc. Airbag apparatus
US8702122B2 (en) 2007-09-16 2014-04-22 Toyota Motor East Japan, Inc. Airbag
JP2017178263A (en) * 2016-03-31 2017-10-05 トヨタ自動車株式会社 Occupant protection device
WO2017171086A1 (en) * 2016-03-31 2017-10-05 トヨタ自動車株式会社 Rider protection device
CN108883737A (en) * 2016-03-31 2018-11-23 丰田自动车株式会社 Occupant protection system
EP3437938A4 (en) * 2016-03-31 2019-10-02 Toyota Jidosha Kabushiki Kaisha Rider protection device
US10974680B2 (en) 2016-03-31 2021-04-13 Toyota Jidosha Kabushiki Kaisha Vehicle occupant protecting device
US11420583B1 (en) 2021-02-04 2022-08-23 Ford Global Technologies, Llc Airbag assembly supported by roof mounted pivotable base

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