JP6836438B2 - 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 waist airbag and an outer waist airbag that deploy from both sides of the vehicle seat in the vehicle width direction toward both sides of the waist of the occupant seated on the seat, and the inner waist airbag and the outer waist airbag. It has a control unit that controls the deployment of the outer waist airbag, and the inner waist airbag extends between an inner member provided inside the seat and the inside of the occupant's waist in the vehicle. The outer waist airbag is deployed so as to extend between the outer member provided on the outside of the seat and the outside of the occupant's waist in the vehicle, and the inner waist airbag and the outer waist air are deployed. The bag presses the waist of the occupant seated on the seat from both sides , and the control unit presses the inner waist airbag against the inside of the occupant's waist and the outer waist airbag against the outside of the occupant's waist. to align the door, adjust the deployment timing and deployment timing of the outer waist airbag in said waist airbag.

Preferably, the control unit is set at a timing when the inner waist airbag is deployed between the inner member and the waist of the occupant, and the outer waist airbag is formed between the outer member and the waist of the occupant. It is preferable that the deployment timing of the inner lumbar airbag and the deployment timing of the outer lumbar airbag are adjusted so as to coincide with the timing of the deployed state over the interval.

Preferably, when the distance from the inner member to the inside of the occupant's waist is wider than the distance from the outer member to the outside of the occupant's waist, the control unit uses the inner waist airbag as the outer waist airbag. It's a good idea to start deploying earlier.

Preferably, when the distance from the outer member to the outside of the occupant's waist is wider than the distance from the inner member to the inside of the occupant's waist, the control unit uses the outer waist airbag as the inner waist airbag. It's a good idea to start deploying earlier.

Preferably, when the capacity of the outer waist airbag is smaller than the capacity of the inner waist airbag, the control unit may start to deploy the inner waist airbag before the outer waist airbag.

Preferably, when the capacity of the inner waist airbag is smaller than the capacity of the outer waist airbag, the control unit may start to deploy the outer waist airbag before the inner waist airbag.

In the present invention, the inner waist airbag and the outer waist airbag are deployed from both sides of the vehicle seat in the vehicle width direction toward both sides of the waist of the occupant seated on the seat. The inner waist airbag is deployed so as to extend between the inner member provided inside the seat in the vehicle and the inside of the occupant's waist, and the outer waist airbag is provided outside the seat in the vehicle. The occupant's waist, which is deployed so as to extend between the outer member and the outside of the occupant's waist, is pressed from both sides (in the left-right direction) by the inner waist airbag and the outer waist airbag. As a result, the lumbar region of the occupant seated on the seat can be pressed from both sides so as not to slide forward from the seated position of the seat.
As a result, the occupant's body, particularly the lumbar region, is held in a position at the timing when the deployment tips of the upper and lower airbags come into contact with each other. 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 the upper and lower airbags to absorb the impact.

Moreover, in the present invention, since both sides of the lumbar portion of the occupant seated on the seat are pressed, 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 inner waist airbag and the outer waist airbag may be provided on both sides of the seat and may be deployed from both sides of the seat. As a result, the lumbar region of the occupant seated on the seat can be pressed from both sides 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.

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 a deployed state of the inner waist airbag and the outer waist airbag of FIG. FIG. 6 is an explanatory view of deployment control of the inner waist airbag and the outer waist airbag of FIG. FIG. 7 is an explanatory view of a deployed state of the inner waist airbag and the outer waist airbag according to the modified example of the first embodiment. FIG. 8 is an explanatory view of the deployed state of the inner waist airbag and the outer waist airbag according to the second 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, before the collision, the seatbelt 19 is wound up by a retractor (not shown) to reduce the slack, and further, 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 waist airbag device 20, and an outer waist airbag. It has a device 30.

The occupant protection control unit 14 includes an external 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 seatbelt device 18, an inner waist airbag device 20, and the like. The outer waist 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 waist airbag 21 and the outer waist airbag 31 of FIG. 5 (A) is a top view and FIG. 5 (B) is a front view.

The inner waist airbag device 20 includes an inner waist airbag 21 and an inner waist inflator 22. The inner waist airbag device 20 is provided on the inner side of the back of the seat 4.
When an ignition signal is input and the inner waist inflator 22 releases gas into the inner waist airbag 21, the inner waist airbag 21 breaks the seat 4 and expands inward and forward from the inner waist airbag device 20. ..
The deployed inner waist airbag 21 fills the space between the center console 7 and the inside of the waist of the occupant seated on the seat 4, and is deployed so as to cross between them.
Further, the inner waist airbag 21 has a front protruding portion 23 that protrudes from the front end portion toward the center of the seat 4. The front protruding portion 23 is located on the inner front side of the waist portion of the occupant seated on the seat 4 with the inner waist airbag 21 deployed.

The outer waist airbag device 30 has an outer waist airbag 31 and an outer waist inflator 32. The outer waist airbag device 30 is provided on the outer side of the back of the seat 4.
When an ignition signal is input and the outer waist inflator 32 releases gas into the outer waist airbag 31, the outer waist airbag 31 breaks the seat 4 and expands from the outer waist airbag device 30 in the outer front direction. ..
The deployed outer waist airbag 31 fills the space between the door panel of the door 5 and the outside of the waist of the occupant seated on the seat 4, and is deployed so as to cross between them.
Further, the outer waist airbag 31 has a front protruding portion 33 that protrudes from the front end portion toward the center of the seat 4. The front protruding portion 33 is located on the outer front side of the waist portion of the occupant seated on the seat 4 with the outer waist airbag 31 deployed.

Then, in the present embodiment, 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. Therefore, the inner waist airbag 21 is formed to have a larger capacity and a larger capacity than the outer waist airbag 31.

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 waist airbag 21, and the deployment of the outer waist airbag 31.

FIG. 6 is an explanatory diagram of deployment control of the inner waist airbag 21 and the outer waist 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 waist inflator 22 of the inner waist airbag device 20 and the outer waist inflator 32 of the outer waist airbag device 30. At this time, the occupant protection control unit 14 first outputs an ignition signal to the inner waist inflator 22 of the inner waist airbag device 20 having a large capacity. As a result, as shown in FIG. 6B, the inner waist airbag 21 starts to deploy in the inner front direction from the inside of the back portion of the seat 4.

Next, the occupant protection control unit 14 outputs an ignition signal to the outer waist inflator 32 of the outer waist airbag device 30 at the timing of the adjustment time difference measured by the timer 13. As a result, the outer waist airbag 31 starts to deploy. The outer waist airbag 31 starts to deploy in the outer front direction from the outside of the back of the seat 4.
After that, as shown in FIG. 6C, the inner waist airbag 21 and the outer waist airbag 31 are deployed so as to hit the left and right sides of the waist of the occupant seated on the seat 4 at the same timing.
The inner waist airbag 21 is deployed so as to extend between the center console 7 and the inside of the waist of the occupant. As a result, the inner waist airbag 21 presses the waist of the occupant from the inside.
The outer waist airbag 31 is deployed so as to extend between the center console 7 and the outside of the waist of the occupant. As a result, the outer waist airbag 31 presses the waist of the occupant from the outside.
By aligning the timing at which these airbags press the lumbar region, the lumbar region of the occupant is pressed from both the left and right sides at the position where the seat 4 is seated, and it becomes difficult to move away from the seating position.
Further, the front protruding portion 23 of the inner waist airbag 21 and the front protruding portion 33 of the outer waist airbag 31 press both sides of the waist portion from the front side.

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.

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.

In the above-mentioned occupant protection control, the deployment of the inner waist airbag 21 may be started from the timing when the frontal collision is actually detected, not from the timing when the possibility of the frontal collision is determined.

As described above, in the present embodiment, the inner waist airbag 21 and the outer waist airbag 31 are deployed from both sides of the seat 4 of the automobile 1 in the vehicle width direction toward both sides of the waist portion of the occupant seated on the seat 4. Then, the inner waist airbag 21 is deployed so as to extend between the inner member provided inside the seat 4 in the automobile 1 and the inside of the waist portion of the occupant, and the outer waist airbag 31 is deployed in the automobile 1 so as to extend between the inner member and the inside of the waist portion of the occupant. The occupant's waist, which is deployed so as to extend between the outer member provided on the outside of the occupant and the outside of the occupant's waist, is provided on both sides in the left-right direction by the inner waist airbag 21 and the outer waist airbag 31. It is suppressed from. As a result, the lumbar region of the occupant seated on the seat 4 can be pressed from both sides so as not to slide forward from the seating position of the seat 4.
As a result, the occupant's body, particularly the lumbar region, is held in a position at the timing when the deployment tip of the front airbag comes into contact. 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 can support the upper body that falls forward around the waist in the seated position to absorb the impact.

Moreover, in the present embodiment, since both sides of the lumbar region of the occupant seated on the seat 4 are pressed, 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, the inner waist airbag 21 and the outer waist airbag 31 are provided on both side portions of the seat 4, and may be deployed from both side portions of the seat 4. As a result, the lumbar portion of the occupant seated on the seat 4 can be pressed from both sides regardless of the front-rear adjustment position of the seat 4 on the vehicle body, the seating position and posture of the seat 4 before deployment, and the body shape of the occupant.

In the present embodiment, the control unit 14 that controls the deployment of the inner waist airbag 21 and the outer waist airbag 31 has a timing at which the inner waist airbag 21 hits and presses the inside of the waist of the occupant, and the outer waist airbag 31 is the occupant. The deployment timing of the inner waist airbag 21 and the deployment timing of the outer waist airbag 31 are adjusted so as to coincide with the timing of pressing against the outside of the waist. As a result, even if the deployment range and capacity of the inner waist airbag 21 and the outer waist airbag 31 are different, the timing at which the inner waist airbag 21 starts pressing the inside of the waist and the outer waist airbag 31 are at the waist. It is possible to align with the timing to start pressing the outside of. You can start pressing the lumbar region from both sides at the same time so that it does not shift from the seating position to the left or right.

In particular, the timing at which the inner waist airbag 21 is deployed between the inner member and the waist of the occupant and the state at which the outer waist airbag 31 is deployed between the outer member and the waist of the occupant It is preferable to adjust the deployment timing of the inner lumbar airbag 21 and the deployment timing of the outer lumbar airbag 31 so as to be aligned with the timing. As a result, the timing at which the inner waist airbag 21 obtains the reaction force from the inner member and starts pressing the inside of the lumbar portion and the timing at which the outer waist airbag 31 obtains the reaction force from the outer member and starts pressing the outside of the lumbar portion are aligned. It will be. The lumbar region is pressed from the left and right at almost the same time, making it difficult to shift from the seating position to the left and right.

In the present embodiment, the inner lumbar airbag 21 and the outer lumbar airbag 31 each have front projecting portions 23 and 33 that project to the front of the lumbar region in a state of being in contact with the lateral side of the lumbar region of the occupant seated on the seat 4. Therefore, the lumbar portion of the occupant seated on the seat 4 can be pressed from both the left and right sides, and both sides of the lumbar portion can be pressed from the front side as well. As a result, the lumbar region can be further stabilized in the seating position.

FIG. 7 is an explanatory view of the deployed state of the inner waist airbag 21 and the outer waist airbag 31 according to the modified example of the first embodiment.
In FIG. 7, 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. Therefore, the outer waist airbag 31 is formed to have a larger capacity than the inner waist airbag 21 and expands greatly.
In this case, the occupant protection control unit 14 first starts the deployment of the outer waist airbag 31, and then starts the deployment of the inner waist airbag 21 at the adjustment timing according to the capacity difference.
As a result, the timing at which the inner waist airbag 21 hits the inside of the occupant's waist and presses it and the timing at which the outer waist airbag 31 hits the outside of the occupant's waist and presses it are aligned.

[Second Embodiment]
Next, the occupant protection device 10 according to the second embodiment will be described. In the following description, the differences from the first embodiment will be mainly described, and the description overlapping with the first embodiment will be omitted.

FIG. 8 is an explanatory view of the deployed state of the inner waist airbag 21 and the outer waist airbag 31 according to the second embodiment.
The inner waist airbag device 20 is provided on the floor surface inside the seat 4. Then, the inner waist airbag 21 is deployed upward from the floor surface and is deployed so as to extend between the center console 7 and the inside of the waist of the occupant.
The outer waist airbag device 30 is provided on the floor surface outside the seat 4. Then, the outer waist airbag 31 is deployed upward from the floor surface and is deployed so as to extend between the door panel of the door 5 and the outside of the waist portion of the occupant.

As a result, the waist of the occupant seated on the seat 4 is pressed from both sides in the left-right direction by the inner waist airbag 21 and the outer waist airbag 31. The lumbar region of the occupant seated on the seat 4 is pressed from both sides so as not to slide forward from the seating position of the seat 4.

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.

In the above embodiment, among the inner waist airbag 21 and the outer waist airbag 31, the airbag on the side that is largely deployed is deployed before the airbag on the side that is deployed smaller.
In addition to this, for example, while making the deployment start timing of these airbags the same, provide a pressure valve or a tether that cuts at a constant pressure so that the airbag on the side to be deployed smaller is delayed and slowly deploys. It may be.

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 ... Crew protection control unit (control unit), 15 ... Front airbag device, 16 ... Front airbag, 17 ... Inflator, 18 ... Three-point seat belt device, 19 ... Seat belt, 20 ... Inner waist air Bag device, 21 ... Inner waist airbag, 22 ... Inner waist inflator, 23 ... Front protrusion, 30 ... Outer waist airbag device, 31 ... Outer waist airbag, 32 ... Outer waist inflator, 33 ... Front protrusion, 40 ... Automatic driving control device, 41 ... External imaging sensor, 42 ... Automatic driving control unit, 43 ... Steering actuator, 44 ... Brake actuator, 45 ... Power source.

Claims (6)

An inner waist airbag and an outer waist airbag that deploy from both sides of the vehicle seat in the vehicle width direction toward both sides of the waist of the occupant seated on the seat.
A control unit that controls the deployment of the inner waist airbag and the outer waist airbag, and
Have,
The inner waist airbag is deployed so as to extend between the inner member provided inside the seat and the inside of the waist of the occupant in the vehicle.
The outer waist airbag is deployed so as to extend between an outer member provided on the outside of the seat and the outside of the occupant's waist in the vehicle.
The inner waist airbag and the outer waist airbag hold the waist of the occupant seated on the seat from both sides.
The control unit
The deployment timing of the inner waist airbag and the timing of pressing the outer waist airbag so that the timing of the inner waist airbag hitting and pressing the inside of the occupant's waist and the timing of pressing the outer waist airbag against the outside of the occupant's waist are aligned. Adjust the deployment timing,
Multiply personnel protection equipment. The control unit
The timing at which the inner waist airbag is deployed between the inner member and the waist of the occupant and the state at which the outer waist airbag is deployed between the outer member and the waist of the occupant are obtained. The deployment timing of the inner waist airbag and the deployment timing of the outer waist airbag are adjusted so as to be aligned with the timing.
The occupant protection device according to claim 1. The control unit
When the distance from the inner member to the inside of the occupant's waist is wider than the distance from the outer member to the outside of the occupant's waist, the inner waist airbag starts to be deployed before the outer waist airbag.
The occupant protection device according to claim 1 or 2. The control unit
When the distance from the outer member to the outside of the occupant's waist is wider than the distance from the inner member to the inside of the occupant's waist, the outer waist airbag starts to be deployed before the inner waist airbag.
The occupant protection device according to claim 1 or 2. The control unit
When the capacity of the outer waist airbag is smaller than the capacity of the inner waist airbag, the inner waist airbag starts to be deployed before the outer waist airbag.
The occupant protection device according to any one of claims 1 to 4. The control unit
When the capacity of the inner waist airbag is smaller than the capacity of the outer waist airbag, the outer waist airbag starts to be deployed before the inner waist airbag.
The occupant protection device according to any one of claims 1 to 4.