JP6839012B2 - Crew protection device - Google Patents

Description

The present invention relates to a device that protects an occupant seated in a seat in an automobile.

As a device for protecting an occupant seated on a seat in an automobile, there is a device using a seat belt or a front airbag (Patent Document 1).
The seat belt is generally a three-point type and has a wrap portion around the waist of the occupant seated on the seat and a shoulder portion that is hung in front of the upper body. Then, the seatbelt is wound up by the retractor before the collision to reduce the slack, and the delivery of the seatbelt is regulated at the time of the collision. As a result, the body of the occupant who is trying to move forward from the seat in the event of a collision can be operated to be held in a seated state on the seat.
The front airbag is provided on the steering wheel or dashboard provided in front of the seat in the passenger compartment and deploys backward toward the seat. Then, 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.

Japanese Unexamined Patent Publication No. 2010-235009

However, even if such an occupant protection device is used, it cannot be appropriately protected in all collision forms.
For example, even in a frontal collision, the occupant seated on the seat may move forward due to the impact of the collision. Then, when the lumbar region of the occupant slides forward from the seating position of the seat, the upper body that tries to fall forward around the lumbar region collapses 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 lumbar region is in the seating position of the seat.

Therefore, it is conceivable to press the occupant's lumbar region from the front so that the occupant's lumbar region does not slide forward from the seating position of the seat.
However, for example, if you try to press the lower back from the front, you will press the abdomen from the front. And in the human body, there is no skeleton in the abdomen. If, for example, the central part of the abdomen is pressed from the front, partial and local pressure will be applied to the central part of the abdomen. Moreover, even if the occupant's waist 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 region of the occupant seated on the seat differ depending on the front-rear adjustment position 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 make it possible to press the abdomen with an appropriate pressure.

As described above, the occupant protection device is required to further improve the occupant protection performance.

The occupant protection device according to the present invention includes an inner airbag that expands so as to project from the inside of the vehicle width direction to the seat surface, and an inner airbag that projects from the outside of the vehicle width direction to the seat surface. 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. The airbag has an outer 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 distance between the inner airbag and the outer airbag is large. The front side of the vehicle is projected onto the seat surface of the seat so as to be narrower than the rear side of the vehicle, and the waist portion of the occupant seated on the seat is placed between the inner inclined surface and the outer inclined surface. Sandwich between.

It is preferable that the distance from the inner inclined surface to the center of the seat in the vehicle width direction and the distance from the outer inclined surface to the center of the seat in the vehicle width direction are the same.

Preferably, the inner airbag expands 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. Therefore, it is preferable to deploy the airbag in 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 such that the thighs of the occupants seated on the seat are inserted between the inner airbag and the seat surface of the seat.

Preferably, the inner airbag and the control unit for controlling the deployment of the outer airbag are provided, and the control unit includes the timing at which the inner airbag is deployed so as to project onto the seat and the outer side. It is preferable to adjust the deployment timing of the inner airbag and the deployment timing of the outer airbag so that the timing of deploying the airbag so as to project onto the seat is aligned.

In the present invention, the inner airbag is deployed on the seat surface of the vehicle seat so as to project from the inside in the vehicle width direction, and the outer airbag is deployed so as to project from the outside in the vehicle width direction. Moreover, the inner airbag and the outer airbag project onto the seat surface of the seat so that the distance between them is narrower 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 as to be narrower on the front side than on the rear side of the vehicle. As a result, the occupant seated on the seat is held down by hitting both sides of the lumbar region with the inner airbag and the outer airbag. The lumbar region of the occupant seated on the seat does not slide forward from the seated position of the seat regardless of the front-rear adjustment position of the seat on the vehicle body, the seating position and posture on the seat before deployment, and the body shape of the occupant. It is pressed from both sides.
As a result, the occupant's body, especially the lumbar region, is held in a position at the time of contact with the inner and outer airbags. It becomes difficult to move forward in the event of a collision. For example, in a frontal collision, the occupant's upper body will fall forward around the lumbar region, which is stable in the seating position, and the behavior of the occupant's upper body in the event of a collision will be closer to the desired one. Then, the upper body that falls forward around the waist in the seated position can be supported by a front airbag or the like to absorb the impact.

Moreover, in the present invention, the inner airbag and the outer airbag press the lumbar region of the occupant seated on the seat from both sides. Therefore, the skeleton of the lumbar region can be pressed from both sides. On the other hand, if, for example, the central portion of the abdomen is pressed from the front, a partial and local pressure acts on the central portion of the abdomen. Moreover, even if the occupant is pressed from the front, the waist of the occupant 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 of the seat in the vehicle width direction and the distance from the outer inclined surface to the center of the seat in the vehicle width direction may be made uniform. As a result, the lumbar region of the occupant can be pressed from both sides while sitting in the center of the seat. Since the front airbag and the like are designed assuming that the occupant is seated in the center of the seat, the shock absorption performance of the front airbag and the like can be brought out.

FIG. 1 is an explanatory diagram of an automobile to which the occupant protection device according to the embodiment of the present invention can be applied. FIG. 2 is an explanatory diagram of an example of occupant behavior in a full-wrap head-on collision. FIG. 3 is an explanatory view of an example in which the upper body of the occupant is tilted while the waist of the occupant 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 view of the deployed state of the inner airbag and the outer airbag of FIG. FIG. 6 is an explanatory view of deployment control of the inner airbag and the outer airbag of FIG. FIG. 7 is an explanatory view of the deployed state of the inner airbag and the outer airbag according to the modified example 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 view of an automobile 1 to which the occupant protection device 10 according to the embodiment of the present invention can be applied.

The automobile 1 is an example of a vehicle. The automobile 1 has a vehicle body 3 in which the passenger compartment 2 is formed. The occupant room 2 is provided with two front seats 4 and a rear seat 4 which are provided facing forward in the occupant room 2 and on which an occupant sits. Doors 5 that are opened and closed for passengers to get on and off are provided on both the left and right sides of the passenger compartment 2. In front of the front seat 4, a dashboard 6 having a length corresponding to the left-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 an automobile 1, a device for protecting an occupant seated on the seat 4 is provided in the event of a collision with another automobile or the like.
FIG. 1 shows a seat belt 19 and a front airbag 16.
The seat belt 19 is generally a three-point type. The three-point seat belt 19 has a wrap portion around the waist of the occupant seated on the seat 4 and a shoulder portion that is hung in front of the upper body. Then, the seatbelt 19 is wound up by a retractor (not shown) to reduce the slack before the collision, and the delivery of the seatbelt 19 is regulated at the time of the collision. As a result, the body of the occupant who intends to move forward from the seat 4 in the event of a collision can be operated to be held in a seated state on the seat 4.
The front airbag 16 is provided on a steering wheel or dashboard 6 provided in front of the seat 4 in the passenger compartment 2 and deploys backward toward the seat 4. Then, the upper body of the occupant who falls forward in the event of 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, it is not possible to appropriately protect the occupants in all collision modes.
For example, FIG. 2 is an explanatory diagram of an example of occupant behavior in a frontal collision.
When a frontal collision occurs while the occupant is seated on the seat 4, as shown in FIG. 2 (A), the occupant seated on the seat 4 exerts a force to move relatively forward due to the impact of the collision. ..
At this time, assuming that the occupant is not pressed by the seat belt 19, the waist portion of the occupant slides forward from the seating position of the seat 4 as shown in FIG. 2 (B).
Then, the occupant's lumbar region stops, for example, with the kneecap hitting the dashboard 6, and the occupant's upper body falls forward around the lumbar region at that position, as shown in FIG. 2 (C). Become.

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

Therefore, it is conceivable to press the occupant's lumbar region from the front so that the occupant's lumbar region does not slide forward from the seating position of the seat 4.
However, for example, when the lumbar region is pressed from the front, the abdomen is pressed from the front. And in the human body, there is no skeleton in the abdomen. If, for example, the central part of the abdomen is pressed from the front, partial and local pressure will be applied to the central part of the abdomen. Moreover, even if the occupant's waist 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 portion of the occupant seated on the seat 4 differ 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 make it possible to press the abdomen with an appropriate pressure.

As described above, 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.

FIG. 4 shows the automatic driving control device 40 together with the occupant protection device 10. The automatic driving control device 40 includes an external image sensor 41, an automatic driving control unit 42, a steering actuator 43, a brake actuator 44, and a power source 45.
The vehicle exterior image sensor 41 images the front of the vehicle body 3, for example. Thereby, for example, another vehicle body approaching the traveling vehicle body 3 from the front can be imaged 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 driving control unit 42 automatically controls the traveling of the automobile 1. The automatic driving control unit 42 controls the steering actuator 43, the brake actuator 44, and the power source 45 according to, for example, travel route information to the destination. Further, the automatic driving 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. Then, when a collision with an approaching object is predicted, the automatic driving control unit 42 controls the steering actuator 43, the brake actuator 44, and the power source 45 so as to avoid the collision.

The occupant protection device 10 of FIG. 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 seatbelt device 18, an inner airbag device 20, and an outer airbag device 30. , Have.

The occupant protection control unit 14 includes an external imaging sensor 41, an automatic driving control unit 42, an occupant position sensor 11, a G sensor 12, a timer 13, a front airbag device 15, a three-point seatbelt 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 the position of the 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 on which the seat 4 is backed.

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

The timer 13 measures the 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, a dashboard 6 or a steering wheel. 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 in the seat 4. The front airbag 16 is deployed in front of the occupant's upper body.

The three-point seat belt device 18 has a seat belt 19. The seat belt 19 has a wrap portion provided around the lumbar region of the occupant seated on the seat 4 by engaging a tongue (not shown) with the buckle, and one shoulder portion to the inside of the lumbar region of the upper body. It forms a shoulder part that is hung over the part. Then, when the pretension signal or the support signal is input, the retractor (not shown) winds up the seat belt 19. For example, the seatbelt 19 is wound up before the collision to reduce the slack, and the delivery of the seatbelt 19 is regulated at the time of the collision. As a result, the body of the occupant who intends to move forward from the seat 4 in the event of a collision can be held in a state of being seated on the seat 4.

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

The inner airbag device 20 has 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 an ignition signal is input and the inner inflator 22 releases gas into the inner airbag 21, the inner airbag 21 expands from the inner airbag device 20 toward the outside in the vehicle width direction. As a result, the inner airbag 21 is deployed so as to project from the inside of the seat 4 in the vehicle width direction onto the seat surface at a height position separated from the seat surface of the seat 4. The inner airbag 21 is deployed so as to project over the thigh of the occupant seated on the seat 4.
Further, the inner airbag 21 has a flat inner inclined surface 23. The inner inclined surface 23 is formed so that the front side of the automobile 1 is inclined so as to be closer to the center of the seat 4 in the vehicle width direction than the rear side. Further, the inner inclined surface 23 is formed to be harder than other parts of the inner airbag 21.

The outer airbag device 30 has 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 on the outside of 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 expands from the outer airbag device 30 toward the outside in the vehicle width direction. As a result, the outer airbag 31 is deployed so as to project from the outside in the vehicle width direction of the seat 4 onto the seat surface at a height position separated from the seat surface of the seat 4. The outer airbag 31 is deployed so as to project over the thigh of the occupant seated on the seat 4.
Further, the outer airbag 31 has a flat outer inclined surface 33. The outer inclined surface 33 is formed so that the front side of the automobile 1 is inclined so as to be closer to the center of the seat 4 in the vehicle width direction than the rear side. Further, the outer inclined surface 33 is formed to be harder than other parts of the outer airbag 31.

In this way, the inner airbag 21 and the outer airbag 31 project onto 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. 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 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 are the same. Then, the lumbar portion of the occupant seated on the seat 4 may 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 may be formed to be narrower than, for example, the waist width of the minimum body size expected to be seated on the seat 4.

In the present embodiment, the distance between the door panel of the door 5 and the seat 4 is wider than the distance between the center console 7 and the seat 4. Therefore, the outer airbag 31 has a larger capacity and is 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 seatbelt device 18, the deployment of the inner airbag 21, and the deployment of the outer airbag 31.

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

With the occupant sitting at the seating position of the seat 4 as shown in FIG. 6A, the occupant protection control unit 14 is, for example, an image captured in front of the vehicle body 3 by the vehicle exterior image sensor 41, from the automatic driving control unit 42. Predict the possibility of collision based on the driving condition information. The traveling state information includes the steering amount of the steering actuator 43, the acceleration / deceleration amount of the brake actuator 44 and the power source 45, and the like. The occupant protection control unit 14 determines the traveling path of the vehicle body 3 based on this information. In addition, an object on or near 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 head-on collision with an object based on this information. It should be noted that these determinations may be executed by the automatic operation control unit 42, and the occupant protection control unit 14 may acquire the determination result from the automatic operation control unit 42.

Then, when there is a possibility of a head-on collision, the occupant protection control unit 14 starts the 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. As a result, as shown in FIG. 6B, the outer airbag 31 starts to deploy inward from the outside of the seat 4.

After that, 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 deploy from the inside of the seat 4 toward the outside.

Then, as shown in FIG. 6C, the inner airbag 21 and the outer airbag 31 are deployed so as to project onto the seat surface of the seat 4 at substantially the same timing. An inner inclined surface 23 and an outer inclined surface 33 are formed on the seat surface of the seat 4 at positions symmetrical with respect to the center of the seat 4 in the vehicle width direction.
The occupant seated on the seat 4 is held down by hitting both sides of the lumbar region against the inner airbag 21 and the outer airbag 31. The lumbar region of the occupant is supported from both the left and right sides at the position where the seat 4 is seated, and the occupant's waist is displaced from the seating position to be difficult to move.

Next, when the occupant protection control unit 14 actually detects a head-on collision based on the acceleration signal of the G sensor 12, the front airbag device 15 is deployed. 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 backward from the front side of the seat 4, as shown in FIG. 6D.

After that, due to the impact input of the head-on collision, the occupant's upper body falls forward. As shown in FIG. 3, the occupant's upper body falls forward so as to rotate around the lumbar region maintained at the seating position of the seat 4.

The above-mentioned occupant protection control may start the deployment of the inner airbag 21 from the timing when the frontal collision is actually detected, not from the timing when the possibility of the head-on collision is determined.

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 inside in the vehicle width direction, and the inside airbag 21 projects from the outside in the vehicle width direction. The airbag 31 is deployed. Moreover, the inner airbag 21 and the outer airbag 31 project onto 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 as to be narrower on the front side than on the rear side of the automobile 1. As a result, the occupant seated on the seat 4 is held down by hitting both sides of the lumbar region with the inner airbag 21 and the outer airbag 31. The lumbar region of the occupant seated on the seat 4 slides forward from the seating position of the seat 4 regardless of the front-rear adjustment position of the seat 4 on the vehicle body, the seating position and posture on the seat 4 before deployment, and the body shape of the occupant. It is pressed from both sides so as not to do it.
As a result, the occupant's body, particularly the lumbar region, is held in a position at the timing of 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 a frontal collision, the occupant's upper body will fall forward around the lumbar region, which is stable in the seating position, and the behavior of the occupant's upper body in the event of a collision will be closer to the desired one. Then, the front airbag 16 or the like supports the upper body that falls forward around the waist in the seated position to absorb the impact.

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

In particular, it is preferable that 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 are the same. As a result, the lumbar region of the occupant can be pressed from both sides while sitting in the center of the seat 4. 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 shock absorbing performance of the front airbag 16 and the like can be brought out.

In the present embodiment, the inner airbag 21 is deployed from the inner member provided inside the seat 4 in the automobile 1, and the outer airbag 31 is deployed from the 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 acts, the inner airbag 21 and the outer airbag 31 can firmly support the lumbar region in contact with 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 waist or both thighs of the occupant seated on the seat 4 from both sides. As a result, the lumbar region of the occupant 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 such that the thighs of the occupants seated on the seat 4 are inserted between the inner airbag 21 and the seat surface of the seat 4. Therefore, the inner airbag 21 and the outer airbag 31 can hold the lumbar region from both sides on both thighs of the occupant seated on the seat 4 to stabilize the lumbar region. 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 has the timing at which the inner airbag 21 is deployed so as to project onto the seat 4 and the outer airbag 31 is the seat. The deployment timing of the inner airbag 21 and the deployment timing of the outer airbag 31 are adjusted so as to be aligned with the deployment timing so as to project above 4. As a result, even if the deployment range and capacity of the inner airbag 21 and the outer airbag 31 are different, for example, the timing at which the inner airbag 21 starts to project onto the seat 4 and the outer airbag 31 are above the seat 4. The timing to start overhanging can be aligned. Even if the occupant's lumbar region hits the inner airbag 21 and the outer airbag 31 during deployment, the lumbar region can be suitably supported from both sides.

The above embodiments are examples of preferred embodiments of the present invention, but the present invention is not limited thereto, and various modifications or modifications can be made without departing from the gist of the invention.

FIG. 7 is an explanatory view of the deployed state of the inner airbag 21 and the outer airbag 31 according to the modified example 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 with a larger capacity and larger than the outer airbag 31.
Further, the occupant protection control unit 14 first deploys the inner airbag 21 having a large capacity, and then deploys the outer airbag 31. As a result, the inner airbag 21 and the outer airbag 31 can be deployed at substantially the same timing.

In the above embodiment, the inner airbag 21 is formed with a flat inner inclined surface 23, and the outer airbag 31 is formed with a flat outer inclined surface 33.
In addition to this, for example, the inner inclined surface 23 and the outer inclined surface 33 may be stepped surfaces. Even in this case, if the front side of the vehicle 1 is inclined so as to be closer to the center of the seat 4 in the vehicle width direction, the lumbar region of the occupant who intends to move forward can be moved to the inner inclined surface 23 and the outer inclined surface. It can be supported from both sides by 33.

1 ... Automobile (vehicle), 2 ... Passenger room, 3 ... Body, 4 ... Seat, 5 ... Door, 6 ... Dashboard, 7 ... Center console, 10 ... Crew protection device, 11 ... Crew position sensor, 12 ... G sensor , 13 ... Timer, 14 ... Passenger protection control unit, 15 ... Front airbag device, 16 ... Front airbag, 17 ... Inflator, 18 ... Seat belt device, 19 ... Seat belt, 20 ... Inside 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 ... Outer vehicle imaging sensor , 42 ... Automatic operation control unit, 43 ... Steering actuator, 44 ... Brake actuator, 45 ... Power source.

Claims (6)

An inner airbag that extends from the inside of the vehicle seat in the width direction to the top of the seat surface,
An outer airbag that expands so as to project from the outside of the seat in the vehicle width direction onto the seat surface,
Have,
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.
The outer airbag has an outer 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.
Wherein the inner air bag and said outer air bag, overhanging onto their spacing of the seating surface of the seat as towards the front is narrower than the rear of the vehicle, and the inner inclined surface and the outer inclined surface Between them, the lumbar region of the occupant seated on the seat is sandwiched between them.
Crew protection device. The distance from the inner inclined surface to the center of the seat in the vehicle width direction and the distance from the outer inclined surface to the center of the seat in the vehicle width direction are the same.
The occupant protection device according to claim 1. 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 developed from an outer member provided on the outside of the seat in the vehicle in the vehicle width direction so as to face the inner airbag.
The occupant protection device according to claim 1 or 2. The inner airbag and the outer airbag deploy at least above the seating surface of the seat.
The occupant protection device according to any one of claims 1 to 3. The inner airbag and the outer airbag are deployed at a height such that the thighs of the occupants seated on the seat are inserted between the inner airbag and the seat surface of the seat.
The occupant protection device according to claim 4. It has a control unit that controls the deployment of the inner airbag and the outer airbag.
The control unit
The deployment timing of the inner airbag and the deployment timing of the inner airbag so that the timing of deploying the inner airbag so as to project onto the seat and the timing of deploying the outer airbag so as to project over the seat are aligned. Adjust the deployment timing of the outer airbag,
The occupant protection device according to claim 1.