JP6414955B2 - Crew protection device - Google Patents

Description

  The present invention relates to an occupant protection device for protecting an occupant from an impact force that acts when a vehicle collides.

  Conventionally, as this type of passenger protection device, an airbag folded and stored in a dashboard provided in front of a passenger seat located on one side in the width direction of the vehicle and a gas for deploying the airbag are supplied. And an inflator for protecting the occupant seated in the passenger seat by deploying the airbag rearward by gas supplied from the inflator in the event of a vehicle collision (for example, , See Patent Document 1).

  In the occupant protection device, the airbag is deployed around the center in the width direction of the passenger seat. In the occupant protection device, when an impact force is applied from the front of the vehicle, such as when the vehicle collides head-on, the occupant's chest and head that are seated in the passenger seat move forward. It is possible to support the occupant effectively by reliably supporting the chest and head of the vehicle. However, in the occupant protection device, when an impact force is applied obliquely from the front side of the driver's seat such as a collision during cornering of the vehicle, the chest and head of the occupant seated in the front passenger seat Since it moves diagonally forward toward the center console located between the seats, the occupant's chest and head cannot be supported by the airbag, and the occupant's head may collide with the center console.

  Therefore, as an occupant protection device for protecting the passenger in the passenger seat against the impact force from the diagonally forward side of the driver's seat side of the vehicle, the airbag and the head and chest of the occupant seated in the seat move forward There is a main bag that rushes into the vehicle and a sub bag that is provided on the side of the vehicle in the width direction of the main bag and projects to the side of the occupant's head that rushes into the main bag. In the occupant protection device including the airbag having the main bag and the sub bag, the side surface of the occupant's head is supported by the deployed sub bag when the impact force from the oblique front on the driver's seat side of the vehicle acts. Therefore, it is effective in preventing a collision of the passenger's head against the center console.

JP 2013-082338 A

  However, an airbag having a main bag and a sub bag has an occupant's head supported by the deployed sub bag when an impact force is applied from an oblique front on the driver's seat side of the vehicle. It moves to the center part side in the width direction of the vehicle in a state supported by At this time, a force that rotates toward the outer side in the width direction of the vehicle acts on the chest of the occupant, which may increase the injury value of the neck.

  An object of the present invention is to provide an occupant protection device that can reduce the injury value of the neck when an impact force from an oblique front on the driver's seat side of the vehicle is applied.

In order to achieve the above object, the present invention includes an airbag provided in front of a seat located on one side in the width direction of the vehicle, and an inflator for supplying gas for deploying the airbag, An occupant protection device that deploys an airbag rearward by gas supplied from an inflator, wherein the airbag includes a main bag in which a head and a chest of an occupant seated on the seat move forward, and the main bag A sub-bag that is provided on the side of the vehicle in the width direction of the vehicle and projects to the side of the occupant's head that has entered the main bag, and the main bag includes the occupant's head and chest There among the portions enters deployment regulating portion for regulating the deployment of a portion corresponding to the width direction central portion side shoulder portion of the occupant of the vehicle is provided, wherein the restrictor section, prior to the main bag Widthwise center side of the vehicle, and is formed by cutting out a portion located below the sub-bag.

  As a result, when the impact force from the diagonally forward side on the other side in the width direction of the vehicle acts and the occupant's head and chest enter the main bag, the shoulder portion of the occupant's vehicle in the center in the width direction is the main portion. Since it is not supported by the bag, the chest rotates with the head of the occupant supported by the sub-bag and rotates outward in the width direction of the vehicle, and the chest rotates toward the outer side of the width of the vehicle. It is possible to prevent the head from rotating.

  According to the present invention, together with the occupant's head that is supported by the sub-bag and rotates outward in the width direction of the vehicle, the chest rotates toward the outer side in the width direction of the vehicle so that the head relative to the occupant's chest does not rotate. Therefore, the load on the neck of the occupant is reduced, and the injury value of the neck can be reduced.

1 is a schematic configuration diagram of a vehicle showing an embodiment of the present invention. It is a schematic structure figure of a crew member protection device. It is a top view which shows an airbag apparatus. It is a front view of the airbag which shows a deployment control part. It is a figure explaining the behavior of the airbag and a passenger | crew at the time of the diagonal collision in the airbag which does not have a deployment control part as a comparative example. It is a figure explaining the behavior of an air bag and a crew member at the time of an oblique collision in an air bag which has a deployment control part.

  1 to 6 show an embodiment of the present invention.

  A vehicle 1 equipped with an occupant protection device according to the present invention includes a vehicle compartment 3 provided at the center in the front-rear direction of the vehicle body 2, a dashboard 4 provided at the front of the vehicle compartment 3, and a dashboard 4. A center console 5 provided at the center of the vehicle body 2 in the width direction, a seat 6 for the driver's seat provided behind the dashboard 4 on the left side of the center of the vehicle body 2 in the width direction of the vehicle body 3; A passenger seat 7 provided behind the dashboard 4 on the right side of the widthwise center of the vehicle body 2 in the vehicle 3 and a rear seat provided across the vehicle body 2 in the width direction of the rear of the passenger compartment 3. 8. In the present embodiment, a driver seat on which the driver is seated is disposed on the left side in the passenger compartment 3, and a passenger seat on which the passenger M is seated is disposed on the right side of the passenger compartment 3.

  The occupant protection device 10 is for protecting the occupant M seated on the passenger seat 7. The occupant protection device 10 includes a seat belt 11 for holding the occupant M seated on the passenger seat 7 at the time of the collision of the vehicle 1 on the passenger seat 7, and an electronic device provided on the traveling of the vehicle 1 and the vehicle body 2. An ECU (Electronic Control Unit) 12 for controlling the vehicle, an imaging sensor for imaging the surroundings of the vehicle, a collision detection sensor 13 that can detect a state where the vehicle 1 is likely to collide, and a collision of the vehicle 1 And an airbag device 20 for supporting the head and chest of an occupant M that moves forward by an impact force.

  When the ECU 12 receives a detection signal indicating that the vehicle 1 is likely to collide from the collision detection sensor 13 while the vehicle 1 is traveling, the ECU 12 transmits an ignition signal to an inflator described later of the airbag device 20. The airbag is deployed by the gas generated by the inflator.

  The airbag device 20 is folded on an airbag case 21 provided inside the dashboard 4, an inflator 22 housed in the airbag case 21, and an inflator 22 inside the airbag case 21. And a stored airbag 23.

  The airbag case 21 is made of a metal member formed in a box shape, and is fixed to an instrument panel reinforcement 2 a constituting the vehicle body 2.

  The inflator 22 includes a gas generating agent and an ignition device, and generates gas to be supplied to the airbag 23 by receiving the ignition signal from the ECU 12 and burning the gas generating agent by the ignition device.

  The airbag 23 is formed of a member obtained by sewing a cloth material into a bag shape. The airbag 23 is deployed between the dashboard 4 and an occupant M seated on the passenger seat 7 and the vehicle body 2 of the main bag 23a. And a sub-bag 23b protruding from the widthwise center portion side.

  The main bag 23a has a width direction dimension that projects between the dashboard 4 and the occupant M seated on the passenger seat 7 from the center in the width direction in the passenger compartment 3 to the right side wall. Yes. The main bag 23a has a surface into which the head and chest of the occupant M seated on the passenger seat 7 enter when an impact force is applied from the front of the vehicle body 2.

  In addition, the main bag 23a is provided with a deployment restricting portion 23c that regulates the deployment of the portion corresponding to the shoulder portion of the vehicle body 2 in the width direction of the vehicle body 2 among the portions into which the head and chest of the occupant M enter. It has been. As shown in FIG. 4, the deployment restricting portion 23 c is located on the width direction center portion side of the vehicle body 2 in the main bag 23 a and below the sub bag 23 b. The main bag 23a is developed in a shape in which the width direction center portion side of the vehicle body 2 and the lower side of the sub bag 23b are cut out.

  The sub bag 23b communicates with the main bag 23a and develops together with the main bag 23a. The sub bag 23b has a smaller volume than the main bag 23a. The sub bag 23b is formed in a vertically long shape having a height dimension larger than that of the head at the width direction center portion side of the vehicle body 2 of the head of the occupant M into which the main bag 23a has entered. The sub bag 23b has a larger overhanging dimension than the front-rear direction of the head.

  In the occupant protection device configured as described above, when an impact force acts on the vehicle body 2 from the front due to a collision or the like, the airbag 23 is deployed as shown in FIG. When an impact force is applied from the front of the vehicle body 2, the head and chest of the occupant M are moved forward and supported by the main bag 23 a that is deployed.

  Next, as a comparative example with the present invention, in the airbag 23 having the subbag 23b in which the deployment restricting portion 23c is not formed, the airbag 23 in the case of an oblique collision in which an impact force acts on the vehicle body 2 from diagonally left front. The unfolding operation and the behavior of the occupant M seated on the passenger seat 7 will be described with reference to FIG. Here, the behavior of the occupant M sitting on the passenger seat 7 is the behavior of a dummy doll used in the collision safety performance test.

  First, when an impact force acts from the diagonally left front of the vehicle body 2, the airbag 23 is deployed as shown in FIG. At this time, the airbag 23 is deployed in front of the head and chest of the occupant M seated on the passenger seat 7, and the front side of the occupant M's head is diagonally forward of the center of the vehicle body 2 in the width direction. The sub bag 23b is developed.

  When an impact force acts from the diagonally left front side of the vehicle body 2, the head and chest of the occupant M are moved obliquely toward the center in the width direction of the vehicle body 2 and deployed as shown in FIG. Enter 23. At this time, the head of the occupant M enters the portion where the base end portions of the main bag 23a and the sub bag 23b are adjacent to each other. The head of the occupant M is supported by the sub bag 23b from the center in the width direction of the vehicle body 2. Accordingly, the head and chest of the occupant M are supported by the airbag 23, and the collision of the head of the occupant M with the center console 5 can be avoided.

  After the head and chest of the occupant M have entered the airbag 23 as shown in FIG. 5B, the head of the occupant M is supported by the subbag 23b, but the chest of the occupant M is further centered in the width direction. Move to the club side. At this time, the occupant M's head moves to the center in the width direction with the base end portion of the main bag 23a and the sub bag 23b projecting to each other. Thus, it rotates in the direction which faces the width direction outer side of the vehicle body 2 with respect to the chest. When the head of the occupant M rotates with respect to the chest, a load acts on the neck, which may increase the injury value of the neck.

  Next, with respect to the airbag 23 having the deployment restricting portion 23c of the present invention, the deployment operation of the airbag 23 and the occupant seated on the passenger seat 7 in the case of an oblique collision in which an impact force acts on the vehicle body 2 from the diagonally left front. The behavior of M will be described with reference to FIG.

  First, when an impact force acts from the diagonally left front of the vehicle body 2, the airbag 23 is deployed as shown in FIG. At this time, the airbag 23 is deployed in front of the head and chest of the occupant M seated on the passenger seat 7, and the front side of the occupant M's head is diagonally forward of the center of the vehicle body 2 in the width direction. The sub bag 23b is developed.

  When an impact force acts from the diagonally left front of the vehicle body 2, the head and chest of the occupant M are moved obliquely toward the widthwise center of the vehicle body 2 and deployed as shown in FIG. 6B. Enter 23. At this time, the head of the occupant M enters the portion where the base end portions of the main bag 23a and the sub bag 23b are adjacent to each other. The head of the occupant M is supported by the sub bag 23b from the center in the width direction of the vehicle body 2.

  After the head and chest of the occupant M enter the airbag 23 as shown in FIG. 6B, the head of the occupant M is supported by the subbag 23b, but the chest of the occupant M is further centered in the width direction. Move to the club side. At this time, the head of the occupant M moves outward in the width direction of the vehicle body 2 by moving the chest toward the width direction central portion side with the base end portions of the main bag 23a and the sub bag 23b protruding into adjacent portions. Rotate in the direction facing In addition, the chest of the occupant M moves toward the center in the width direction of the vehicle body 2, but the deployment restricting portion 23 c is located at the center in the width direction of the main bag 23 a and below the sub bag 23 b. Therefore, the shoulder portion of the occupant M on the side of the center portion in the width direction of the vehicle body 2 is not supported by the main bag 23a, and the shoulder of the occupant M on the side of the center portion in the width direction of the vehicle body 2 moves forward. Thereby, as shown in FIG. 6C, the chest of the occupant M rotates together with the head in the direction facing the outer side in the width direction of the vehicle body 2. Accordingly, the occupant M entering the airbag 23 is restricted from rotating the head with respect to the chest, and a large load does not act on the neck of the occupant M.

  Thus, according to the occupant protection device of the present embodiment, the airbag 23 includes the main bag 23a into which the head and the chest of the occupant M seated on the passenger seat 7 move forward, and the main bag. 23a, a sub bag 23b provided on the side of the center of the vehicle body 2 in the width direction and projecting to the side of the head of the occupant M that has entered the main bag 23a. An expansion restricting portion 23c for restricting the expansion of the portion corresponding to the shoulder portion on the width direction center portion side of the vehicle body 2 of the occupant M is provided.

  As a result, the chest rotates together with the head of the occupant M supported by the sub bag 23b and rotates outward in the width direction of the vehicle body 2, and the chest rotates toward the outer side of the vehicle body 2 in the width direction. Since it can be prevented from rotating, the load on the neck of the occupant M is reduced, and the injury value of the neck can be reduced.

  The deployment restricting portion 23c is formed by cutting out a portion of the main bag 23a located in the center in the width direction of the vehicle body 2 and below the sub bag 23b.

  As a result, a space is formed in the portion of the main bag 23a where the shoulder portion of the occupant M on the vehicle body 2 side in the width direction of the vehicle body 2 enters, so It can be rotated.

  In the above embodiment, the left side of the passenger compartment is the driver's seat and the right side is the passenger seat, but the present invention is also applicable to a vehicle having the right side of the passenger compartment as the driver seat and the left side as the passenger seat. .

  In the above embodiment, the airbag 23 having the deployment restricting portion 23c is the main bag 23a that is deployed in a shape in which the vehicle body 2 is cut out in the width direction center portion and below the subbag 23b. However, it is not limited to this. For example, the deployment restricting portion is configured in the main bag by sewing together a portion of the main bag that is deployed in a rectangular shape as viewed from the occupant M in the width direction center portion of the vehicle body 2 and below the sub bag 23b. It may be.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Vehicle body, 7 ... Passenger seat, 20 ... Air bag apparatus, 23 ... Air bag, 23a ... Main bag, 23b ... Sub bag, 23c ... Deployment regulation part.

Claims (1)

An airbag provided in front of a seat located on one side in the width direction of the vehicle, and an inflator for supplying a gas for deploying the airbag, and the airbag is moved rearward by the gas supplied from the inflator An occupant protection device to be deployed,
The airbag includes a main bag in which a head and a chest of an occupant seated on the seat move forward and enter, and an occupant that enters the main bag in the width direction center of the main bag. A sub-bag that protrudes to the side of the head of the
The main bag is provided with a deployment restricting portion that regulates the deployment of the portion corresponding to the shoulder portion on the side of the center of the occupant in the width direction of the portion into which the occupant's head and chest enter ,
The occupant protection device , wherein the deployment restricting portion is formed by notching a portion of the main bag located in the width direction center of the vehicle and below the sub bag .

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