CN107264462A - 车辆的乘员保护装置 - Google Patents

车辆的乘员保护装置 Download PDF

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CN107264462A
CN107264462A CN201710056006.4A CN201710056006A CN107264462A CN 107264462 A CN107264462 A CN 107264462A CN 201710056006 A CN201710056006 A CN 201710056006A CN 107264462 A CN107264462 A CN 107264462A
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expanding unit
belt
seat
occupant
crisscross
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CN107264462B (zh
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近藤敬生
长泽勇
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Subaru Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/18—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags the inflatable member formed as a belt or harness or combined with a belt or harness arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
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    • B60—VEHICLES IN GENERAL
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    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
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    • B60—VEHICLES IN GENERAL
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    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
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    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
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    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01512—Passenger detection systems
    • B60R21/01544—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment
    • B60R21/0155—Passenger detection systems detecting seat belt parameters, e.g. length, tension or height-adjustment sensing belt tension
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    • B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
    • B60R21/01554—Seat position sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
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    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
    • B60R21/262—Elongated tubular diffusers, e.g. curtain-type
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    • B60—VEHICLES IN GENERAL
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    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/12—Construction of belts or harnesses
    • B60R22/14—Construction of belts or harnesses incorporating enlarged restraint areas, e.g. vests, nets, crash pads, optionally for children
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
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    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01013—Means for detecting collision, impending collision or roll-over
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    • B60—VEHICLES IN GENERAL
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    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01204—Actuation parameters of safety arrangents
    • B60R2021/01211—Expansion of air bags
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    • B60—VEHICLES IN GENERAL
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    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01311—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring the braking system, e.g. ABS
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    • B60—VEHICLES IN GENERAL
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    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R2021/01317—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over monitoring seat belt tensiont
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    • B60—VEHICLES IN GENERAL
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    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
    • B60R21/0132—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to vehicle motion parameters, e.g. to vehicle longitudinal or transversal deceleration or speed value
    • B60R2021/01327—Angular velocity or angular acceleration
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    • B60R2300/30—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing
    • B60R2300/301—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of image processing combining image information with other obstacle sensor information, e.g. using RADAR/LIDAR/SONAR sensors for estimating risk of collision

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  • Engineering & Computer Science (AREA)
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  • Remote Sensing (AREA)
  • Air Bags (AREA)
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Abstract

本发明涉及车辆的乘员保护装置，目的在于简易地抑制碰撞时头部、颈部与上身触碰。汽车(1)的乘员保护装置具有乘坐汽车(1)的乘员所坐的座椅(5)；在坐在座椅(5)上的乘员上身前搭设座椅安全带(11)的三点式座椅安全带装置(10)；安全带气囊装置(20)，其相对于座椅安全带(11)的从乘员肩到腰的肩带部(26)设置，具有在碰撞时展开的安全带气囊(21)。安全带气囊(21)具有沿肩带部(26)延伸展开的安全带方向展开部(24)；在与肩带部(26)交叉的方向上延伸展开的交叉方向展开部(25)。安全带方向展开部(24)和交叉方向展开部(25)在坐在座椅(5)上的乘员头部下侧以向上侧突出的状态相互连结形成1个袋体。

Description

车辆的乘员保护装置
技术领域
本发明涉及一种车辆的乘员保护装置。
背景技术
在汽车这种车辆中，为了在碰撞时保护乘员，如专利文献1所述，使用有三点式座椅安全带装置和安全气囊装置。
在三点式座椅安全带装置中，从坐在座椅上的乘员的车宽方向外侧的肩部向内侧的腰部，进而向外侧的腰部搭设有座椅安全带。
现有技术文献
专利文献
专利文献1：(日本)特开2015-193316号公报
发明内容
发明所要解决的课题
但是，三点式座椅安全带装置由于只会约束乘员的上身，因此无法抑制碰撞时头部、颈部(頭部や首)与上身触碰。
如此，要求在车辆中能够简易地抑制碰撞时头部、颈部与上身触碰。
解决课题的手段
本发明涉及的车辆的乘员保护装置，具有：座椅，供乘坐车辆的乘员落座；三点式座椅安全带装置，其在坐在所述座椅上的乘员的上身前搭设座椅安全带；以及安全带气囊装置，其相对于所述座椅安全带的从乘员的肩部到腰部的肩带部进行设置，具有在碰撞时展开的安全带气囊，其中，所述安全带气囊具有：安全带方向展开部，其沿着所述肩带部延伸展开；以及交叉方向展开部，其在与所述肩带部交叉的方向上延伸展开，所述安全带方向展开部和所述交叉方向展开部在坐在座椅上的乘员的头部下侧，以向上侧突出的状态相互连结，形成1个袋体。
优选地，所述安全带方向展开部可以沿着所述肩带部，以与所述交叉方向展开部同等的长度延伸，所述交叉方向展开部和所述安全带方向展开部双方的下端可以彼此连结，形成大致V字形。
优选地，所述安全带方向展开部可以沿着所述肩带部，以长于所述交叉方向展开部的长度延伸，所述交叉方向展开部的下端可以与细长的所述安全带方向展开部的中央连结，形成大致y字形。
优选地，所述安全带方向展开部和所述交叉方向展开部双方的中央可以彼此连结，形成大致X字形。
优选地，在所述安全带方向展开部和所述交叉方向展开部的连结部分的上侧，形成有填塞所述安全带方向展开部与所述交叉方向展开部的间隔的填充部。
发明效果
通过本发明，在碰撞时安全带气囊会在座椅安全带的肩带部展开。而且，安全带气囊具有：安全带方向展开部，其沿着肩带部延伸展开；以及交叉方向展开部，其在与肩带部交叉的方向上延伸展开，其中，安全带方向展开部和交叉方向展开部在坐在座椅上的乘员的头部下侧，以向上侧突出的状态相互连结，形成1个袋体。因此，在碰撞时，在坐在座椅上的乘员的头部下侧，安全带方向展开部沿着座椅安全带的肩带部展开，同时，交叉方向展开部在与之交叉的方向上展开。所以，在由三点式座椅安全带支撑上身的状态下，例如即使头部要向前方或横向移动，下颌也会碰到安全带方向展开部和交叉方向展开部中的至少一个，难以继续移动。其结果，能够简易地抑制碰撞时头部、颈部与上身触碰。
附图说明
图1是本发明实施方式涉及的汽车的侧面透视图；
图2是三点式座椅安全带装置保护乘员的状态的说明图；
图3是本实施方式的安全带气囊装置保护乘员的状态的说明图；
图4是图3的安全带气囊装置的控制系统的方框图；
图5是表示图3的乘员保护装置的动作的一例的流程图；
图6是安全带气囊的第一变形例的说明图；
图7是安全带气囊的第二变形例的说明图；
图8是安全带气囊的第三变形例的说明图。
符号说明
1…汽车(车辆)
2…前室
3…乘员室
4…后室
5…座椅
10…三点式座椅安全带装置
11…座椅安全带
12…锚固件
13…带扣
14…卷收器
20…安全带气囊装置
21…安全带气囊
22…主体
23…管
24…安全带方向展开部
25…交叉方向展开部
26…肩带部
27…填充部
31…摄像设备
32…加速度传感器
33…速度传感器
34…制动操作传感器
35…角速度传感器
36…安全带张力传感器
37…安全带卷绕量传感器
38…落座传感器
39…计时器
40…控制部
具体实施方式
下面基于附图，对本发明的实施方式进行说明。
图1是本发明实施方式涉及的汽车1的侧面透视图。汽车1是车辆的一例。图1中，还图示有在汽车1的前方行驶的其他汽车1。
图1的汽车1具有由前室2、乘员室3以及后室4组成的车体。前室2中配置有发动机、电动机等动力单元。后室4中设置有行李空间。乘员室3中设置有乘车的乘员落坐的座椅5。另外，乘员室3中，在驾驶员用的座椅5的前方，设置有加速踏板、制动踏板、方向盘等操作部件。汽车1根据驾驶员的操作进行行驶、停止、左右转向。
图2是三点式座椅安全带装置10保护乘员的状态的说明图。
三点式座椅安全带装置10具有：座椅安全带11、锚固件12、带扣13、卷收器14。
座椅安全带11是搭设在坐在座椅5上的乘员的身体前面的安全带。图2的示例中，从左锁骨到右腰旁在上身的前侧倾斜地搭设，进而从右腰旁向左腰旁在腰前大致水平地搭设。
锚固件12将座椅安全带11的前端固定在座椅5的椅面的外侧位置。
带扣13固定在座椅5的椅面的内侧位置。带扣13上可拆卸地安装有座椅安全带11穿过的未图示的舌板。
卷收器14具有：卷绕座椅安全带11的卷轴、对卷轴进行正反旋转驱动的马达、使卷轴在瞬间向卷绕方向旋转的气体发生器等。
而且，坐在座椅5上的乘员例如拉动舌板，从卷收器14抽出座椅安全带11，将舌板安装到带扣13上。由此，如图2那样搭设座椅安全带11。该状态下，卷收器14进行动作，由此，坐在座椅5上的乘员能够以被座椅安全带11按压在座椅5上的方式被支撑。
但是，三点式座椅安全带装置10由于只会约束乘员的上身，因此无法抑制碰撞时头部、颈部对上身的触碰。
如此，要求在汽车1这种车辆中能够简易地抑制碰撞时头部、颈部对上身的触碰。
图3是本实施方式的安全带气囊装置20保护乘员的状态的说明图。
图3的乘员保护装置具有三点式座椅安全带装置10、以及安全带气囊装置20。
图3的安全带气囊装置20具有：安全带气囊21、具有充气器的主体22、连结安全带气囊21和充气器的管23。
安全带气囊装置20的主体22例如配置在车体的B柱内等。主体22也可以配置在座椅5的背部。
安全带气囊21在碰撞时展开。安全带气囊21具有安全带方向展开部24和交叉方向展开部25。安全带方向展开部24和交叉方向展开部25具有同等的长度，其下端彼此连结，构成大致V字形的单独袋体。
安全带方向展开部24设置在座椅安全带11的从乘员左肩到腰部的肩带部26的上部。安全带方向展开部24沿着肩带部26延伸。
交叉方向展开部25以从肩带部26的中央部分向着乘员右肩的方式，在与肩带部26交叉的方向上延伸。
如此，大致V字形的安全带气囊21设置在肩带部26的上部。由此，大致V字形的安全带气囊21在落坐在座椅5上的乘员的头部下侧配置为大致V字形。
图4是图3的安全带气囊装置20的控制系统的方框图。
图4的控制系统具有：摄像设备31、加速度传感器32、速度传感器33、制动操作传感器34、角速度传感器35、安全带张力传感器36、安全带卷绕量传感器37、落座传感器38、计时器39、以及连接有这些部件的控制部40。另外，图4中一并图示了与控制部40连接的控制对象即座椅安全带装置10和安全气囊装置。其中的安全气囊装置中含有安全带气囊装置20。
摄像设备31例如为一对摄像元件，如图所示，面向前方地设置在乘员室3的车顶和前挡玻璃上，通过摄像来观测汽车1前方的周边状况。控制部40从拍摄的图像中，确定例如汽车1前方的其他汽车1等障碍物，作为汽车1的周边状况，得以判断该障碍物的碰撞可能性。由此，能够检测碰撞前的汽车1的行驶状况。
加速度传感器32固定设置在车体上，检测作用在汽车1上的加速度作为汽车1的行驶状况。由此，能够检测碰撞前的汽车1的减速。另外，由于在碰撞时会产生较大减速，因此能够检测汽车1的碰撞。
速度传感器33固定设置在车体上，检测汽车1的速度作为汽车1的行驶状况。
制动操作传感器34设置在乘员室3内，检测乘员踩下制动踏板的操作。由此，能够检测碰撞前的汽车1的减速操作。
角速度传感器35固定设置在车体上，检测汽车1的速度作为汽车1的行驶状况。
安全带张力传感器36例如设置在卷收器14中，检测作用在座椅安全带11上的张力。由此，能够检测追尾时相对地向前移动的乘员身体的动作，或者因其身体的动作而作用在座椅安全带11上的张力。
安全带卷绕量传感器37例如设置在卷收器14中，检测座椅安全带11的卷绕量。
落座传感器38例如设置在座椅5的椅面上，检测乘员在座椅5上落座、落座位置。
计时器39测量时间。
控制部40根据这些传感器的检测信号，控制座椅安全带装置10和安全带气囊装置20进行的乘员保护动作。控制部40例如基于碰撞预测，实施碰撞前控制，基于碰撞检测实施碰撞时控制。
图5是表示图3的乘员保护装置的动作的一例的流程图。
如图3所示，在碰撞前，乘员坐在座椅5上。
控制部40例如根据摄像设备31的图像，周期性地预测碰撞的可能性(步骤ST1)。之后，当存在碰撞的可能性时，控制部40通过预紧动作使座椅安全带装置10工作(步骤ST2)。由此，乘员的上身会以被按压在座椅5上的方式被支撑。
然后，控制部40例如根据加速度传感器32的检测值等检测碰撞(步骤ST3)。
之后，若检测到碰撞，则控制部40使安全气囊展开(步骤ST4)。
当检测到碰撞时，安全带气囊装置20激发充气器，使安全带气囊21展开。安全带方向展开部24和交叉方向展开部25通过来自充气器的高压气体展开，安全带气囊21膨胀为大致V字形。
由此，在碰撞时，乘员的上身会以被按压在座椅5上的方式被座椅安全带11保持。并且，当该状态下头部要向前或旁边移动时，头部的下颌或侧面会碰到展开成大致V字形的安全带气囊21。由此，头部不会再进一步移动。
如上所述，通过本实施方式，在碰撞时安全带气囊21会在座椅安全带11的肩带部26展开。而且，安全带气囊21具有：安全带方向展开部24，其沿着肩带部26延伸展开；以及交叉方向展开部25，其在与肩带部26交叉的方向上延伸展开，其中，安全带方向展开部24和交叉方向展开部25在坐在座椅5上的乘员的头部下侧，以向上侧突出的状态相互连结，形成1个袋体。因此，在碰撞时，在坐在座椅5上的乘员的头部下侧，安全带方向展开部24沿着座椅安全带11的肩带部26展开，同时，交叉方向展开部25在与之交叉的方向上展开。所以，在由三点式座椅安全带11支撑上身的状态下，例如即使头部要向前方或横向移动，下颌也会碰到安全带方向展开部24和交叉方向展开部25中的至少一个，不易继续移动。其结果，能够简易地抑制碰撞时头部、颈部对于上身的触碰。
另外，本实施方式中，安全带方向展开部24沿着肩带部26，以与交叉方向展开部25同等的长度延伸，交叉方向展开部25和安全带方向展开部24的下端彼此连结，形成大致V字形。由此，在乘员的头部下侧，使大致V字形的安全气囊展开，能够抑制头部向前方或横向移动。而且，通过将安全带气囊21设为大致V字形，能够使容量成为最小限度，立即展开。其结果，能够及早进行保护。
上述实施方式为本发明的优选实施方式的示例，但本发明并不限于此，可以在不脱离本发明要旨的范围内进行各种变形或变更。
图6是安全带气囊21的第一变形例的说明图。
图6中，安全带方向展开部24沿着肩带部26，以长于交叉方向展开部25的长度延伸。另外，交叉方向展开部25的下端与细长的所述安全带方向展开部24的中央连结，形成大致y字形。
如此，安全带方向展开部24比V字更向下侧延伸并成为大致y字形，由此，被作用了负荷的V字部分不易从上身的表面脱离。因此，即使在更大的负荷作用时，也能够将V字部分维持在颌下的位置。
图7是安全带气囊21的第二变形例的说明图。
图7中，安全带方向展开部24和交叉方向展开部25双方的中央彼此连结，形成大致X字形。
如此，通过形成为大致X字形，不仅颌下的V字部分不易因负荷而下坠，而且更不易扭曲。因此，即使在较大的负荷例如向着斜下方作用时，也能够将V字部分维持在颌下的位置。
图8是安全带气囊21的第三变形例的说明图。
图8中，在安全带方向展开部24和交叉方向展开部25的连结部分的上侧，形成有填塞安全带方向展开部24与交叉方向展开部25的间隔的填充部27。填充部27例如可以为板状的橡胶材料或布。
由此，通过将安全带方向展开部24和交叉方向展开部25的连结部分的上侧用填充部27填塞，当被作用了负荷时，安全带方向展开部24和交叉方向展开部25形成的V字部分不易张开变形。其结果，安全带气囊21能够切实地承受头部的负荷。

Claims (5)

1.一种车辆的乘员保护装置，包括：
乘坐车辆的乘员落座的座椅；
三点式座椅安全带装置，其在落坐在所述座椅上的乘员的上身前搭设座椅安全带；以及
安全带气囊装置，其相对于所述座椅安全带的从乘员的肩部到腰部的肩带部进行设置，并且具有在碰撞时展开的安全带气囊，
其中，所述安全带气囊具有：
安全带方向展开部，其沿着所述肩带部延伸展开；以及
交叉方向展开部，其在与所述肩带部交叉的方向上延伸展开，
所述安全带方向展开部和所述交叉方向展开部在落坐在座椅上的乘员的头部下侧相互连结，形成1个袋体。
2.根据权利要求1所述的车辆的乘员保护装置，其中，所述安全带方向展开部沿着所述肩带部，以与所述交叉方向展开部同等的长度延伸，
所述交叉方向展开部和所述安全带方向展开部双方的下端彼此连结，形成大致V字形。
3.根据权利要求1所述的车辆的乘员保护装置，其中，所述安全带方向展开部沿着所述肩带部，以长于所述交叉方向展开部的长度延伸，
所述交叉方向展开部的下端与细长的所述安全带方向展开部的中央连结，形成大致y字形。
4.根据权利要求1所述的车辆的乘员保护装置，其中，所述安全带方向展开部和所述交叉方向展开部双方的中央彼此连结，形成大致X字形。
5.根据权利要求1～4中任一项所述的车辆的乘员保护装置，其中，在所述安全带方向展开部和所述交叉方向展开部的连结部分的上侧，形成有填充部，所述填充部填塞所述安全带方向展开部与所述交叉方向展开部的间隔。
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