JP2018161977A - Occupant protection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further improve occupant protection performance.SOLUTION: An occupant protection device 10 has an inside airbag 21 which is extended from the inside in a vehicle width direction of a seat 4 of an automobile 1 so as to overhang to the upper position of the seating surface, and an outside airbag 31 which is extended from the outside in the vehicle width direction of the seat 4 so as to overhang to the upper position of the seating surface. The inside airbag 21 and the outside airbag 31 overhang to the upper position of the seating surface of the seat 4 so that an interval therebetween on a front side of the automobile 1 becomes narrower than the interval on a rear side, and sandwich a waist part of an occupant seated on the seat 4 therebetween.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an apparatus for protecting an occupant seated on a seat in an automobile.

As an apparatus for protecting an occupant seated on a seat in an automobile, there is an apparatus using a seat belt or a front airbag (Patent Document 1).
The seat belt is generally a three-point type, and has a lap portion around the waist of an occupant seated on the seat and a shoulder portion that is struck in front of the upper body. Then, before the collision, the seat belt is wound up by a retractor to reduce slack, and the feeding of the seat belt is restricted at the time of the collision. Thereby, it can operate | move so that the passenger | crew's body which is going to move ahead from a seat | sheet at the time of a collision may be hold | maintained in the state seated on the seat | sheet.
The front airbag is provided on a handle or dashboard provided in front of the seat in the passenger compartment, and is deployed rearward toward the seat. The upper body of the occupant who falls forward in the event of a collision is supported by the deployed front airbag to absorb the impact.

JP 2010-235009 A

However, even if such an occupant protection device is used, it cannot be properly protected in all collision modes.
For example, even in a frontal collision, an occupant seated on the seat may move forward due to the impact of the collision. And if the occupant's waist slides and moves forward from the seating position of the seat, the upper body that tries to fall forward around it with the waist as the axis falls forward from the state approaching the front airbag It will be. In this case, the contact state between the front airbag and the upper body is different from that assumed when the waist is in the seating position of the seat.

Therefore, it is conceivable to hold the occupant's waist from the front so that the occupant's waist does not slide forward from the seating position of the seat.
However, for example, if the waist is pressed from the front, the abdomen will be pressed from the front. In the human body, the abdomen has no skeleton. For example, if the central part of the abdomen is pressed from the front, partial and local pressure acts on the central part of the abdomen. Moreover, even if the seat is pressed from the front, the occupant's waist easily slides forward from the seating position of the seat.
Further, the position and range of the lumbar portion of the occupant seated on the seat differ depending on the adjustment position of the front and rear of the seat on the vehicle body, the body shape of the occupant seated on the seat, the seating posture of the occupant, and the like. For this reason, it is not easy to press the abdomen with an appropriate pressure.

  Thus, in the occupant protection device, further improvement in occupant protection performance is required.

  An occupant protection device according to the present invention expands from an inner side of a vehicle seat in the vehicle width direction so as to protrude onto the seat surface, and extends from the outer side of the seat in the vehicle width direction onto the seat surface. The inner airbag and the outer airbag are arranged on the seating surface of the seat so that the distance between them is smaller on the front side than on the rear side of the vehicle. The lumbar part of the occupant seated on the seat is sandwiched between them.

  Preferably, the inner airbag has an inner inclined surface that is inclined so that the front side of the vehicle is closer to the center of the seat in the vehicle width direction than the rear side of the vehicle, and the outer airbag is the rear of the vehicle. A front side rather than a side has an outer inclined surface inclined so as to approach the center in the vehicle width direction of the seat, and a waist portion of an occupant seated on the seat is sandwiched between the inner inclined surface and the outer inclined surface Good.

  Preferably, the distance from the inner inclined surface to the center in the vehicle width direction of the seat is aligned with the distance from the outer inclined surface to the center in the vehicle width direction of the seat.

  Preferably, the inner airbag is deployed in the vehicle width direction from an inner member provided inside the seat in the vehicle, and the outer airbag is an outer member provided outside the seat in the vehicle. To the vehicle width direction so as to face the inner airbag.

  Preferably, the inner airbag and the outer airbag are deployed at least above the seating surface of the seat.

  Preferably, the inner airbag and the outer airbag are deployed at a height with an interval between the thigh of an occupant seated on the seat and the seat surface of the seat.

  Preferably, a control unit that controls deployment of the inner airbag and the outer airbag, and the control unit deploys the timing at which the inner airbag is deployed so as to project onto the seat and the outer side. The deployment timing of the inner airbag and the deployment timing of the outer airbag may be adjusted so that the deployment timing of the airbag so as to overhang the seat is aligned.

In the present invention, on the seat surface of the vehicle seat, the inner airbag is deployed so as to project from the inner side in the vehicle width direction, and the outer airbag is deployed so as to project from the outer side in the vehicle width direction. In addition, the inner airbag and the outer airbag project onto the seat surface so that the distance between them is smaller on the front side than on the rear side of the vehicle. For example, the inner inclined surface of the inner airbag and the outer inclined surface of the outer airbag are provided so that the front side is narrower than the rear side of the vehicle. Thereby, the passenger | crew who seated on the seat | press is suppressed when both sides of a waist | hip | lumbar part contact | wins an inner side airbag and an outer side airbag. The waist of the occupant seated in the seat will not move forward from the seated position of the seat, regardless of the adjustment position of the front and rear of the seat in the car body, the seating position and posture on the seat before deployment, and the occupant's body shape So that it can be pressed from both sides.
As a result, the occupant's body, particularly the waist, is held in a position at the timing of contact with the inner airbag and the outer airbag. It becomes difficult to move forward in the event of a collision. For example, in the case of a frontal collision, the upper body of the occupant falls to the front side around the waist that is stable at the sitting position, and the behavior of the upper body of the occupant approaches a desired one in the event of a collision. And the upper body which falls to the front etc. around the waist | hip | lumbar part in a seating position can be supported by a front airbag etc., and an impact can be absorbed.

  Moreover, in the present invention, the inner airbag and the outer airbag hold the occupant's lower back seated on the seat from both sides. Therefore, the skeleton of the waist can be pressed from both sides. On the other hand, if, for example, the central part of the abdomen is pressed from the front, a partial and local pressure acts on the central part of the abdomen. Moreover, even if the seat is pressed from the front, the occupant's waist easily slides forward from the seating position of the seat. In the present invention, these problems are unlikely to occur.

  In particular, the distance from the inner inclined surface to the center in the vehicle width direction of the seat may be aligned with the distance from the outer inclined surface to the center in the vehicle width direction of the seat. Thereby, a passenger | crew's waist | hip | lumbar part can be hold | suppressed from both sides in the state seated in the center of a sheet | seat. Since the front airbag and the like are designed on the assumption that the occupant is seated in the center of the seat, the impact absorption performance of the front airbag and the like can be extracted.

FIG. 1 is an explanatory diagram of an automobile to which an occupant protection device according to an embodiment of the present invention can be applied. FIG. 2 is an explanatory diagram of an example of the behavior of an occupant in a full-wrap frontal collision. FIG. 3 is an explanatory diagram of an example of a state in which the upper body falls down while the occupant's waist is in the seating position of the seat. FIG. 4 is an explanatory diagram of the occupant protection device according to the first embodiment. FIG. 5 is an explanatory diagram of the deployed state of the inner airbag and the outer airbag in FIG. 4. FIG. 6 is an explanatory diagram of the deployment control of the inner airbag and the outer airbag of FIG. FIG. 7 is an explanatory diagram of a deployed state of the inner airbag and the outer airbag according to a modification of the first embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is an explanatory diagram of an automobile 1 to which an occupant protection device 10 according to an embodiment of the present invention is applicable.

  The automobile 1 is an example of a vehicle. The automobile 1 has a vehicle body 3 in which a passenger compartment 2 is formed. The passenger compartment 2 is provided with two front seats 4 and a rear seat 4 that are provided forward in the passenger compartment 2 and on which the passengers sit. On the left and right sides of the passenger compartment 2, doors 5 that are opened and closed for passengers to get on and off are provided. In front of the front seat 4, a dashboard 6 having a length corresponding to the left and right width of the passenger compartment 2 is provided. A center console 7 is provided between the two front seats 4.

By the way, in such a motor vehicle 1, a device for protecting an occupant seated on the seat 4 when a collision with another vehicle or the like is provided.
FIG. 1 shows a seat belt 19 and a front airbag 16.
The seat belt 19 is generally a three-point system. The three-point seat belt 19 has a lap portion around the waist of an occupant seated on the seat 4 and a shoulder portion that is worn in front of the upper body. Then, before the collision, the seat belt 19 is wound up by a retractor (not shown) to reduce sagging, and further, the feeding of the seat belt 19 is restricted at the time of the collision. Thereby, it can operate | move so that the passenger | crew's body which is going to move ahead from the seat 4 at the time of a collision may be held in the state seated on the seat 4.
The front airbag 16 is provided on a handle or dashboard 6 provided in front of the seat 4 in the passenger compartment 2 and is deployed rearward toward the seat 4. The upper body of the occupant who falls forward during a collision can be supported by the deployed front airbag 16 to absorb the impact.

However, even if such an occupant protection device 10 is used, the occupant cannot be properly protected in all collision modes.
For example, FIG. 2 is an explanatory diagram of an example of the behavior of an occupant in a frontal collision.
When a frontal collision occurs while the occupant is seated on the seat 4, as shown in FIG. 2A, a force to move relatively forward acts on the occupant seated on the seat 4 due to the impact of the collision. .
If the occupant is not pressed by the seat belt 19 at this time, the occupant's waist moves from the seating position of the seat 4 to the front as shown in FIG.
Then, the occupant's waist is stopped, for example, with the kneecap hitting the dashboard 6, and the upper body of the occupant falls forward around the lumbar at that position, as shown in FIG. 2 (C). Become.

On the other hand, FIG. 3 is an explanatory diagram of an example of a state in which the upper body of the occupant falls while the occupant's waist is in the seating position of the seat 4.
The contact state of the upper body with respect to the front airbag 16 in FIG. 2C is different from that assumed in the case where the waist is in the sitting position, as is apparent from comparison with FIG. The upper body of the occupant falls forward at a position approaching the front airbag 16. The contact state between the deployed front airbag 16 and the upper body is different from that when it is assumed that the waist is at the seating position of the seat 4. In this case, the deployed front airbag 16 may not be able to absorb the impact by supporting the upper body that has fallen down properly.
In addition, the upper body suddenly falls forward in a short time after the movement of the waist has stopped.

Therefore, it is conceivable to hold the occupant's waist from the front so that the occupant's waist does not slide and move forward from the seating position of the seat 4.
However, for example, when the waist is pressed from the front, the abdomen is pressed from the front. In the human body, the abdomen has no skeleton. For example, if the central part of the abdomen is pressed from the front, partial and local pressure acts on the central part of the abdomen. Moreover, even if the seat is pressed from the front, the occupant's waist easily slides forward from the seating position of the seat 4.
Further, the position and range of the waist of the occupant seated on the seat 4 vary depending on the adjustment position of the front and rear of the seat 4 on the vehicle body, the body shape of the occupant seated on the seat 4, the seating posture of the occupant, and the like. For this reason, it is not easy to press the abdomen with an appropriate pressure.

  Thus, the occupant protection device 10 is required to further improve the occupant protection performance.

  FIG. 4 is an explanatory diagram of the occupant protection device 10 according to the first embodiment.

In FIG. 4, an automatic operation control device 40 is shown together with the occupant protection device 10. The automatic driving control device 40 includes an outside vehicle image sensor 41, an automatic driving control unit 42, a steering actuator 43, a brake actuator 44, and a power source 45.
For example, the outside image sensor 41 images the front of the vehicle body 3. Thereby, for example, another vehicle body approaching from the front with respect to the traveling vehicle body 3 can be captured as an image.
The steering actuator 43 drives the steering device of the automobile 1 instead of the steering wheel.
The brake actuator 44 drives the braking device of the automobile 1 instead of the brake pedal.
The power source 45 is, for example, a gasoline engine or an electric motor.
The automatic operation control unit 42 automatically controls the traveling of the automobile 1. The automatic operation control unit 42 controls the steering actuator 43, the brake actuator 44, and the power source 45, for example, according to the travel route information to the destination. Further, the automatic operation control unit 42 identifies an approaching object based on the image of the vehicle exterior image sensor 41 and predicts a collision with the approaching object. When a collision with an approaching object is predicted, the automatic operation control unit 42 controls the steering actuator 43, the brake actuator 44, and the power source 45 so as to avoid the collision.

  4 includes an occupant position sensor 11, a G sensor 12, a timer 13, an occupant protection control unit 14, a front airbag device 15, a three-point seat belt device 18, an inner airbag device 20, and an outer airbag device 30. Have.

  The occupant protection control unit 14 includes an outside vehicle image sensor 41, an automatic operation control unit 42, an occupant position sensor 11, a G sensor 12, a timer 13, a front airbag device 15, a three-point seat belt device 18, an inner airbag device 20, and an outer side. The airbag device 30 is connected.

  The occupant position sensor 11 detects the position of the head or upper body of the occupant seated on the seat 4. For example, the occupant position sensor 11 detects the amount of movement forward or the amount of movement in the left-right direction with reference to the seating position with the back on the seat 4.

  The G sensor 12 detects acceleration acting on the automobile 1. The direction of acceleration to be detected may be the front-rear direction, the left-right direction, or the up-down direction.

  The timer 13 measures time or time.

  The front airbag device 15 is provided in front of an occupant seated on the seat 4. The front airbag device 15 is provided on, for example, the dashboard 6 and the handle. The front airbag device 15 includes a front airbag 16 and an inflator 17. When the ignition signal is input, the inflator 17 releases gas into the front airbag 16. As a result, the front airbag 16 is deployed rearward toward the occupant seated on the seat 4. A front airbag 16 is deployed in front of the upper body of the passenger.

  The three-point seat belt device 18 includes a seat belt 19. The seat belt 19 includes a lap portion provided around a waist portion of an occupant seated on the seat 4 by engaging a tongue (not shown) with a buckle, and an inner side of the waist portion from one shoulder portion of the upper body. And a shoulder portion to be applied over the portion. Then, when a pretension signal or a support signal is input, a retractor (not shown) winds up the seat belt 19. For example, the seat belt 19 is wound up before the collision to reduce slack, and the feeding of the seat belt 19 is restricted at the time of the collision. Thereby, the body of the occupant trying to move forward from the seat 4 at the time of the collision can be held in a state of being seated on the seat 4.

  FIG. 5 is an explanatory diagram of the deployed state of the inner airbag 21 and the outer airbag 31 in FIG. 4. 5A is a top view and FIG. 5B is a front view.

The inner airbag device 20 includes an inner airbag 21 and an inner inflator 22. The inner airbag device 20 is provided on the center console 7 provided inside the seat 4 in the automobile 1. The inner airbag device 20 is provided at a position higher than the seat surface of the seat 4.
When the ignition signal is input and the inner inflator 22 releases the gas into the inner airbag 21, the inner airbag 21 is deployed outward from the inner airbag device 20 in the vehicle width direction. As a result, the inner airbag 21 is deployed so as to protrude from the inner side in the vehicle width direction of the seat 4 onto the seat surface at a height position spaced above the seat surface of the seat 4. The inner airbag 21 is deployed so as to overhang the thigh of the occupant seated on the seat 4.
The inner airbag 21 has a flat inner inclined surface 23. The inner inclined surface 23 is formed to be inclined so that the front side is closer to the vehicle width direction center of the seat 4 than the rear side of the automobile 1. The inner inclined surface 23 is formed to be harder than other portions of the inner airbag 21.

The outer airbag device 30 includes an outer airbag 31 and an outer inflator 32. The outer airbag device 30 is provided on the door panel of the door 5 provided outside the seat 4 in the automobile 1. The outer airbag device 30 is provided at a position higher than the seat surface of the seat 4.
When the ignition signal is input and the outer inflator 32 releases the gas into the outer airbag 31, the outer airbag 31 is deployed outward from the outer airbag device 30 in the vehicle width direction. As a result, the outer airbag 31 is deployed so as to protrude from the outer side in the vehicle width direction of the seat 4 onto the seat surface at a height position spaced above the seat surface of the seat 4. The outer airbag 31 is deployed so as to overhang the thigh of the occupant seated on the seat 4.
The outer airbag 31 has a planar outer inclined surface 33. The outer inclined surface 33 is formed to be inclined so that the front side is closer to the vehicle width direction center of the seat 4 than the rear side of the automobile 1. Further, the outer inclined surface 33 is formed to be harder than other portions of the outer airbag 31.

As described above, the inner airbag 21 and the outer airbag 31 project on the seat surface of the seat 4 so that the distance between them is smaller on the front side than on the rear side of the automobile 1. The inner inclined surface 23 and the outer inclined surface 33 are formed symmetrically with respect to the center of the seat 4 in the vehicle width direction. The distance from the inner inclined surface 23 to the center in the vehicle width direction of the seat 4 and the distance from the outer inclined surface 33 to the center in the vehicle width direction of the seat 4 are aligned. The waist of the occupant seated on the seat 4 can be sandwiched between the inner inclined surface 23 and the outer inclined surface 33 formed on the seat surface of the seat 4.
Further, the minimum distance between the inner airbag 21 and the outer airbag 31 is preferably formed to be narrower than the waist width of the smallest body size assumed to be seated on the seat 4, for example.

  In this embodiment, the distance from the door panel of the door 5 to the seat 4 is wider than the distance from the center console 7 to the seat 4. For this reason, the outer airbag 31 is deployed larger in capacity and larger than the inner airbag 21.

  The occupant protection control unit 14 controls the operation of the occupant protection device 10 according to the traveling state of the automobile 1. Specifically, it controls the deployment of the front airbag device 15, the operation of the three-point seat belt device 18, the deployment of the inner airbag 21, and the deployment of the outer airbag 31.

  FIG. 6 is an explanatory diagram of the deployment control of the inner airbag 21 and the outer airbag 31 of FIG.

  In the state where the occupant is sitting at the seating position of the seat 4 as shown in FIG. 6A, the occupant protection control unit 14, for example, an image captured in front of the vehicle body 3 by the vehicle exterior image sensor 41, from the automatic operation control unit 42. The possibility of a collision is predicted based on the running state information. The traveling state information includes the steering amount of the steering actuator 43, the acceleration / deceleration amount by the brake actuator 44 and the power source 45, and the like. The occupant protection control unit 14 determines the travel route of the vehicle body 3 based on these pieces of information. In addition, an object on or in the vicinity of the traveling path is specified based on the captured image in front of the vehicle body 3. The occupant protection control unit 14 determines the possibility of a frontal collision with the object based on these pieces of information. These determinations may be executed by the automatic driving control unit 42, and the occupant protection control unit 14 may acquire the determination result from the automatic driving control unit 42.

If there is a possibility of a frontal collision, the occupant protection control unit 14 starts occupant protection control. In the occupant protection control, the occupant protection control unit 14 outputs an ignition signal to the inner inflator 22 of the inner airbag device 20 and the outer inflator 32 of the outer airbag device 30.
At this time, the occupant protection control unit 14 first outputs an ignition signal to the outer inflator 32 of the outer airbag device 30 having a large capacity. Thereby, as shown in FIG. 6 (B), the outer airbag 31 starts to be deployed inward from the outside of the seat 4.

  Thereafter, when the timer 13 measures the adjustment time difference corresponding to the time difference between the deployment time of the outer airbag 31 and the deployment time of the inner airbag 21, the occupant protection control unit 14 ignites the inner inflator 22 of the inner airbag 21 device. Output a signal. As a result, the inner airbag 21 starts to expand outward from the inside of the seat 4.

Then, as shown in FIG. 6C, the inner airbag 21 and the outer airbag 31 are deployed so as to overhang the seat surface of the seat 4 at substantially the same timing. On the seat surface of the seat 4, an inner inclined surface 23 and an outer inclined surface 33 are formed at positions that are symmetrical with respect to the center of the seat 4 in the vehicle width direction.
The occupant seated on the seat 4 is pressed by the both sides of the waist hitting the inner airbag 21 and the outer airbag 31. The occupant's waist is supported from the left and right sides at the position where the occupant is seated on the seat 4, and is difficult to move out of the seated position.

  Next, when the frontal collision is actually detected based on the acceleration signal of the G sensor 12, the occupant protection control unit 14 deploys the front airbag device 15. The occupant protection control unit 14 outputs an ignition signal to the inflator 17 of the front airbag device 15. As a result, the front airbag 16 is deployed rearward from the front side of the seat 4 as shown in FIG.

  Thereafter, the upper body of the occupant falls forward due to the impact input of the frontal collision. As shown in FIG. 3, the occupant's upper body falls forward so as to rotate around the waist part maintained at the seating position of the seat 4.

  Note that the above-described occupant protection control may start deployment of the inner airbag 21 not from the timing at which the possibility of a frontal collision is determined, but from the timing at which a frontal collision is actually detected.

As described above, in the present embodiment, the inner airbag 21 is deployed on the seat surface of the seat 4 of the automobile 1 so as to project from the inner side in the vehicle width direction, and the outer side so as to project from the outer side in the vehicle width direction. The airbag 31 is deployed. Moreover, the inner airbag 21 and the outer airbag 31 project on the seat surface of the seat 4 so that the distance between them is narrower on the front side than on the rear side of the automobile 1. For example, the inner inclined surface 23 of the inner airbag 21 and the outer inclined surface 33 of the outer airbag 31 are provided so that the front side is narrower than the rear side of the automobile 1. As a result, the occupant seated on the seat 4 is pressed when both sides of the waist hit the inner airbag 21 and the outer airbag 31. The waist part of the occupant seated on the seat 4 slides forward from the seating position of the seat 4 regardless of the adjustment position of the front and rear of the seat 4 in the vehicle body, the seating position and posture on the seat 4 before deployment, and the body shape of the occupant It can be pressed from both sides to prevent it
As a result, the occupant's body, particularly the lower back, is held at a position at the timing when it comes into contact with the inner airbag 21 and the outer airbag 31. It becomes difficult to move forward in the event of a collision. For example, in the case of a frontal collision, the upper body of the occupant falls to the front side around the waist that is stable at the sitting position, and the behavior of the upper body of the occupant approaches a desired one in the event of a collision. And the upper body which falls to the front etc. around the waist | hip | lumbar part in a seating position can be supported by the front airbag 16, etc., and an impact can be absorbed.

  Moreover, in the present invention, the inner airbag 21 and the outer airbag 31 press the waist of the occupant seated on the seat 4 from both sides. Therefore, the skeleton of the waist can be pressed from both sides. On the other hand, if, for example, the central part of the abdomen is pressed from the front, a partial and local pressure acts on the central part of the abdomen. Moreover, even if the seat is pressed from the front, the occupant's waist easily slides forward from the seating position of the seat 4. In the present invention, these problems are unlikely to occur.

  In particular, the distance from the inner inclined surface 23 to the center of the seat 4 in the vehicle width direction and the distance from the outer inclined surface 33 to the center of the seat 4 in the vehicle width direction may be aligned. Thereby, the passenger | crew's waist | hip | lumbar part can be hold | suppressed from both sides in the state seated in the center of the seat | sheet 4. FIG. Since the front airbag 16 and the like are designed on the assumption that the occupant is seated in the center of the seat 4, the impact absorption performance of the front airbag 16 and the like can be brought out.

  In the present embodiment, the inner airbag 21 is deployed from an inner member provided inside the seat 4 in the automobile 1, and the outer airbag 31 is deployed from an outer member provided outside the seat 4 in the automobile 1. . Therefore, the deployed inner airbag 21 and outer airbag 31 can be supported by the inner member and the outer member to obtain a reaction force. Even if the load of the occupant seated on the seat 4 is applied, the inner airbag 21 and the outer airbag 31 can firmly support the waist that hits them from both sides.

  In the present embodiment, the inner airbag 21 and the outer airbag 31 are deployed at least above the seating surface of the seat 4. Therefore, the inner airbag 21 and the outer airbag 31 can press the lumbar part or both thighs of the occupant seated on the seat 4 from both sides. Thereby, the occupant's lower back seated on the seat 4 is stabilized.

  In particular, in the present embodiment, the inner airbag 21 and the outer airbag 31 are deployed at a height that is spaced from the seat surface of the seat 4 so that an occupant's thigh seated on the seat 4 enters. Therefore, the inner airbag 21 and the outer airbag 31 can stabilize the waist by pressing the waist from both sides on both thighs of the occupant seated on the seat 4. Both thighs can be pressed from above so that the waist does not easily float from the seat 4.

  In the present embodiment, the occupant protection control unit 14 that controls the deployment of the inner airbag 21 and the outer airbag 31 is configured so that the inner airbag 21 is deployed so that the inner airbag 21 projects over the seat 4 and the outer airbag 31 is seated. 4, the deployment timing of the inner airbag 21 and the deployment timing of the outer airbag 31 are adjusted so that the deployment timing is aligned with the deployment timing so as to overhang the top 4. Thereby, for example, even when the deployment range and capacity differ between the inner airbag 21 and the outer airbag 31, for example, the timing at which the inner airbag 21 begins to protrude onto the seat 4 and the outer airbag 31 on the seat 4 It is possible to align with the timing to start overhanging. Even if the occupant's waist hits the inner airbag 21 and the outer airbag 31 in the middle of deployment, the waist can be suitably supported from both sides.

  The above embodiment is an example of a preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications or changes can be made without departing from the scope of the invention.

FIG. 7 is an explanatory diagram of the deployed state of the inner airbag 21 and the outer airbag 31 according to a modification of the first embodiment.
In FIG. 7, the distance from the center console 7 to the seat 4 is wider than the distance from the door panel of the door 5 to the seat 4.
In this case, the inner airbag 21 needs to be deployed larger in capacity and larger than the outer airbag 31.
In addition, the occupant protection control unit 14 first deploys the inner airbag 21 having a large capacity first, and then deploys the outer airbag 31. Thereby, the inner side airbag 21 and the outer side airbag 31 can be deployed at substantially the same timing.

In the above embodiment, the inner airbag 21 is formed with a planar inner inclined surface 23, and the outer airbag 31 is formed with a planar outer inclined surface 33.
In addition, for example, the inner inclined surface 23 and the outer inclined surface 33 may be stepped step surfaces. Even in this case, if the front side rather than the rear side of the automobile 1 is inclined so as to approach the center in the vehicle width direction of the seat 4, the lumbar part of the occupant trying to move forward is moved to the inner inclined surface 23 and the outer inclined surface. 33 can be supported from both sides.

  DESCRIPTION OF SYMBOLS 1 ... Automobile (vehicle), 2 ... Passenger compartment, 3 ... Vehicle body, 4 ... Seat, 5 ... Door, 6 ... Dashboard, 7 ... Center console, 10 ... Passenger protection device, 11 ... Passenger position sensor, 12 ... G sensor , 13 ... Timer, 14 ... Occupant protection controller, 15 ... Front airbag device, 16 ... Front airbag, 17 ... Inflator, 18 ... Seat belt device, 19 ... Seat belt, 20 ... Inner airbag device, 21 ... Inside Airbag, 22 ... inner inflator, 23 ... inner inclined surface, 30 ... outer airbag device, 31 ... outer airbag, 32 ... outer inflator, 33 ... outer inclined surface, 40 ... automatic driving control device, 41 ... outside imaging sensor , 42 ... automatic operation control unit, 43 ... steering actuator, 44 ... brake actuator, 45 ... power source.

Claims (7)

An inner airbag that extends so as to protrude from the inner side of the vehicle seat in the vehicle width direction onto the seat surface;
An outer airbag that is deployed so as to project from the outside in the vehicle width direction of the seat onto the seat surface;
Have
The inner airbag and the outer airbag are projected on the seat surface of the seat so that the distance between the inner airbag and the outer airbag is narrower on the front side than on the rear side of the vehicle. Sandwiched between
Crew protection device. The inner airbag has an inner inclined surface that is inclined so that the front side is closer to the vehicle width direction center of the seat than the rear side of the vehicle,
The outer airbag has an outer inclined surface that is inclined so that the front side is closer to the vehicle width direction center of the seat than the rear side of the vehicle,
Between the inner inclined surface and the outer inclined surface, sandwich the waist of the occupant seated on the seat,
The occupant protection device according to claim 1. The distance from the inner inclined surface to the center in the vehicle width direction of the seat and the distance from the outer inclined surface to the center in the vehicle width direction of the seat are aligned.
The occupant protection device according to claim 2. The inner airbag is deployed in the vehicle width direction from an inner member provided inside the seat in the vehicle,
The outer airbag is deployed in the vehicle width direction so as to face the inner airbag from an outer member provided outside the seat in the vehicle.
The occupant protection device according to any one of claims 1 to 3. The inner airbag and the outer airbag are deployed at least above the seating surface of the seat;
The occupant protection device according to any one of claims 1 to 4. The inner airbag and the outer airbag are deployed at a height with an interval between the thigh of an occupant seated on the seat and the seat surface of the seat.
The occupant protection device according to claim 5. A control unit that controls deployment of the inner airbag and the outer airbag;
The controller is
The deployment timing of the inner airbag and the deployment timing of the inner airbag so that the timing of deployment of the inner airbag so as to project onto the seat and the timing of deployment of the outer airbag so as to project onto the seat are aligned. Adjust the deployment timing of the outer airbag,
The occupant protection device according to claim 1 or 2.