JP6626764B2 - Vehicle occupant protection device - Google Patents

Description

  The present invention relates to a vehicle occupant protection device.

In a vehicle such as an automobile, a seat belt device or an airbag device is used to protect an occupant in the event of a collision.
The airbag device includes a front airbag that deploys rearward from the front side of the occupant, as disclosed in Patent Document 1. The front airbag is deployed, for example, when a vehicle collides from the front, and receives and supports an occupant who moves forward in the case of a front collision.
Further, there is a curtain airbag that deploys in the front-rear direction along the inside of a side surface of a vehicle as in Patent Document 2. The curtain airbag is deployed, for example, in the event of a collision from the side of the vehicle, and receives and supports an occupant who attempts to move outward in the vehicle width direction in the event of a side collision.
Further, there is a side airbag that is deployed between the inside of the side surface of the vehicle and an occupant below the curtain airbag. The side airbag, together with the curtain airbag, receives and supports an occupant trying to move outward in the vehicle width direction in the event of a side collision.

JP 2013-014176 A JP-A-2005-067123

  Thus, the vehicle is provided with a plurality of airbags in order to cope with a plurality of collision modes. The number of airbags increases substantially proportionally according to the number of collision modes to be dealt with.

  Vehicles are required to be able to cope with a plurality of collision modes while suppressing an increase in the number of airbags.

  An occupant protection device for a vehicle according to the present invention is a seat on which an occupant sitting in a vehicle sits, and the occupant seated on the seat is turned forward from the rear side of the upper body and deployed to the front of the upper arm or a peripheral part thereof. An airbag device having an embracing airbag, wherein the embracing airbag starts to deploy to the front side after passing under the armpit or near the side from the rear side of the upper body of the occupant seated on the seat Then, the deploying direction is turned upward toward the front of the upper arm or the surrounding area.

  Preferably, the embracing airbag is a bag body having a bent or curved shape that wraps forward from the rear side of the upper body of the occupant seated on the seat and reaches the front side of the upper arm or a peripheral part thereof, A pressure valve that partitions the interior of the bag into at least a part that expands from the rear side of the upper body of the occupant seated on the seat to the front and a remaining part, and the pressure valve is opened by an increase in pressure, It is preferable that the deployment direction of the bag is changed from the front side to the upper side.

  Preferably, the embracing airbag has a bent or curved shape in which the occupant seated on the seat wraps forward from the rear side of the upper body and reaches the front side of the upper arm or a peripheral portion thereof, and the occupant seated on the seat. A bag body having a shape extending linearly from the rear side to the front of the upper body, or an intermediate shape thereof, and the bag in a state in which the occupant seated on the seat is deployed from the rear side to the front of the upper body A tether connecting a first position at an upper portion of the bag and a second position at a lower portion of the bag, wherein the second position is located after an upper body of an occupant seated on the seat. In the bag deployed in the front from the side, the bag is located on the front side from the first position, and the second position is rotated around the first position by the tether. It is good to change from the front side to the upper side.

  Preferably, the embracing airbag has a bent or curved shape in which the occupant seated on the seat wraps forward from the rear side of the upper body and reaches the front side of the upper arm or a peripheral portion thereof, and the occupant seated on the seat. A bag body having a shape extending linearly from the rear side to the front of the upper body, or an intermediate shape thereof, and the bag in a state in which the occupant seated on the seat is deployed from the rear side to the front of the upper body A different extension portion provided on at least one of the upper portion and the lower portion such that the upper portion is less likely to extend than the lower portion of the bag body, and the different extension portion lowers the upper portion of the bag body. It is preferable that the direction in which the bag body is deployed is changed from the front side to the upper side by extending the bag.

  Preferably, the embracing airbag has a bent or curved shape in which the occupant seated on the seat wraps forward from the rear side of the upper body and reaches the front side of the upper arm or a peripheral portion thereof, and the occupant seated on the seat. A first bag body having a shape extending linearly from the rear side of the upper body to the front, or a shape intermediate between them, and a second body that is integrated under the first bag body and developed in the front-rear direction It is good to have a bag, and to unfold the second bag from the back of the first bag, and the first bag developed ahead may move up.

  Preferably, the airbag device is provided as a pair on the left and right sides of the occupant seated on the seat, and wraps around the left and right shoulders, the left and right collarbones, or the front sides of the left and right upper arms and fastens the wings.

In the present invention, the embracing airbag extends forward from the rear side of the upper body of the occupant seated on the seat and deploys to the front side of the upper arm or the surrounding area. Therefore, in the event of a collision, the upper body of the occupant who attempts to move away from the seat is caught by the curved or bent deployed airbag, and is more difficult to move. This makes it difficult for the occupant's body to move in a plurality of collision modes such as a frontal collision and a side collision.
Moreover, in the present invention, the embracing airbag starts to deploy forward from the rear side of the occupant seated on the seat, passing under the armpits or near the side, and then deploying to the front of the upper arm or the surrounding area. Turn the deployment direction upwards toward. Therefore, even when the occupant is seated on the seat, the occupant can be deployed forward from under the occupant and further toward the front of the upper arm or the surrounding area.

FIG. 1 is a side perspective view of an automobile according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of an occupant protection state by various airbag devices. FIG. 3 is an explanatory diagram of an occupant protection state by the wing closing airbag device according to the embodiment of the present invention. FIG. 4 is a block diagram of a control system of the blade closing airbag device of FIG. FIG. 5 is an explanatory diagram of the structure of the embraced airbag of the first embodiment. FIG. 6 is an explanatory diagram of the operation of the embracing airbag of FIG. FIG. 7 is an explanatory diagram of the structure of the embraced airbag of the second embodiment. FIG. 8 is an explanatory diagram of the operation of the embracing airbag of FIG. FIG. 9 is an explanatory diagram of the structure of the embraced airbag of the third embodiment. FIG. 10 is an explanatory diagram of the operation of the embracing airbag of FIG. FIG. 11 is an explanatory diagram of the structure of the embraced airbag of the fourth embodiment. FIG. 12 is an explanatory diagram of the operation of the embracing airbag of FIG.

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

[First Embodiment]
FIG. 1 is a side perspective view of an automobile 1 according to an embodiment of the present invention. The automobile 1 is an example of a vehicle. FIG. 1 shows another vehicle 1 running in front of the vehicle 1.

  The vehicle 1 shown in FIG. 1 has a vehicle body including a front room 2, a passenger room 3, and a rear room 4. Power units such as an engine and an electric motor are arranged in the front room 2. A luggage space is provided in the rear room 4. The passenger compartment 3 is provided with a seat 5 on which the occupant sits. In the passenger compartment 3, operating members such as an accelerator pedal, a brake pedal, and a steering wheel are provided in front of the driver's seat 5. The car 1 runs, stops, and turns left or right based on the operation of the driver.

  FIG. 2 is an explanatory diagram of an occupant protection state by various airbag devices.

FIG. 2A illustrates a front airbag device 11 that deploys the front airbag 12 backward from the front of the occupant seated on the seat 5 toward the occupant. The front airbag device 11 has an inflator, an undeployed front airbag 12, and a main body 13 that accommodates them. The main body 13 is arranged, for example, on a dashboard or a handle. When the inflator is ignited, the front airbag 12 deploys rearward. By deploying the front airbag 12 in front of the occupant seated on the seat 5, for example, in the event of a collision from the front side, the occupant attempting to move forward can be received and supported.
FIG. 2B shows a curtain airbag device 16 that deploys the curtain airbag 17 along the front-rear direction outside the occupant seated on the seat 5 and a front-rear direction below the curtain airbag 17. The side airbag device 21 for deploying the side airbag 22 is illustrated. The main body 18 of the curtain airbag device 16 is arranged, for example, on a roof rail. The curtain airbag device 16 is deployed along the window glass in a range from the A pillar to the C pillar. The main body 23 of the side airbag device 21 is arranged, for example, on the outer portion of the back of the seat 5. The side airbag device 21 deploys the side airbag 22 from the outer portion of the back of the seat 5 to the front. When the curtain airbag 17 and the side airbag 22 are deployed outside the vehicle width direction of the occupant seated on the seat 5, the occupant trying to move outward in the vehicle width direction at the time of a collision from the side can be received. Or a space between the occupant and the door.
FIG. 2C shows the front airbag device 11 and the side airbag device 21. The front airbag 12 and the side airbag 22 are deployed on the front side of the occupant seated on the seat 5 and on the outer side in the vehicle width direction, so as to receive the occupant trying to move diagonally forward and obliquely in the event of a collision from diagonally forward. Can be supported.
As described above, the automobile 1 is provided with a plurality of airbags to cope with a plurality of collision modes. The number of airbags increases substantially proportionally according to the number of collision modes to be dealt with. As collision safety standards are strengthened and reviewed in the future, more airbags will need to be provided.
For this reason, the automobile 1 is required to be able to cope with a plurality of collision modes while suppressing an increase in the number of airbags.

  FIG. 3 is an explanatory diagram of an occupant protection state by the wing fastening airbag device 31 of the present embodiment. 3A is a side view, FIG. 3B is a front view, and FIG. 3C is a top view.

  3 includes a right airbag device and a left airbag device. A pair is provided on the left and right sides of the occupant sitting on the seat 5.

The right airbag device has a right embracing airbag 32 and a right main body 33 accommodating the inflator therewith.
The main body 33 of the right airbag device is arranged, for example, on the right side of the back of the seat 5. The main body 33 may be arranged on the right side of the seat 5 of the seat 5. Here, the right side is the inside in the vehicle width direction.
The right embracing airbag 32 has a deployed shape curved in a substantially U-shape. The embracing airbag 32 is deployed forward from the main body 33, and is deployed in a posture in which the substantially U-shaped shape is on the upper side and the U-shaped concave portion formed by the substantially U-shaped shape is directed rearward.

The left airbag device has a left embracing airbag 32 and a left main body 33 accommodating the inflator. Here, the left side is the outside in the vehicle width direction.
The main body 33 of the left airbag device is disposed, for example, on the left side of the back of the seat 5. The main body 33 may be arranged on the left part of the seat of the seat 5.
The shape and the deployment state of the left embracing airbag 32 are the same as those of the right side, and the description is omitted.

  FIG. 4 is a block diagram of a control system of the blade closing airbag device 31 of FIG.

  4 includes an imaging device 51, an acceleration sensor 52, a speed sensor 53, a brake operation sensor 54, an angular speed sensor 55, a belt tension sensor 56, a belt winding amount sensor 57, a seating sensor 58, a timer 59, and these components. And a control unit 60 connected thereto. FIG. 4 also shows a seat belt device and an airbag device, which are connected to the control unit 60 and are controlled objects. The airbag device here includes a wing-closing airbag device 31.

  The imaging device 51 is, for example, a pair of imaging devices, and is provided facing forward on the roof or windshield of the passenger compartment 3 as shown in the figure, and observes a situation in front of the automobile 1 by imaging. The control unit 60 can specify an obstacle such as another car 1 in front of the car 1 as the surrounding situation of the car 1 from the captured image and determine the possibility of collision of the obstacle. This makes it possible to detect the running state of the vehicle 1 before the collision.

  The acceleration sensor 52 is fixed to the automobile 1 and detects an acceleration acting on the automobile 1 as a traveling state of the automobile 1. Thereby, the deceleration of the vehicle 1 before the collision can be detected. Further, since a large deceleration occurs at the time of the collision, the collision of the automobile 1 can be detected.

  The speed sensor 53 is fixed to the vehicle 1 and detects the speed of the vehicle 1 as a running state of the vehicle 1.

  The brake operation sensor 54 is provided in the passenger compartment 3 and detects a depression operation of a brake pedal by the passenger. Thereby, the deceleration operation of the automobile 1 before the collision can be detected.

  The angular velocity sensor 55 is provided fixed to the vehicle 1 and detects the speed of the vehicle 1 as the traveling state of the vehicle 1.

  The belt tension sensor 56 is provided in, for example, a retractor device and detects a tension acting on the strap. Thus, it is possible to detect the movement of the body of the occupant moving relatively forward at the time of a rear-end collision, or the tension acting on the strap due to the movement of the body.

  The belt winding amount sensor 57 is provided in, for example, a retractor device, and detects the winding amount of the strap.

  The seating sensor 58 is provided, for example, on the seating surface of the seat 5 and detects an occupant sitting on the seat 5 and a seating position.

  Timer 59 measures time.

  The control unit 60 controls the occupant protection operation by the seat belt device and the airbag device based on the detection signals of these sensors. The control unit 60 performs, for example, pre-collision control based on a collision prediction, and performs collision control based on collision detection.

FIG. 5 is an explanatory diagram of the structure of the embracing airbag 32 of the first embodiment.
5 includes a bag 34, a first pressure valve 38, and a second pressure valve 39.
The bag 34 has a long part 35, a short part 36, and a protrusion 37. The long part 35 and the short part 36 are connected in a substantially L-shape. The protruding portion 37 protrudes from the tip of the short portion 36. The entirety of the bag body 34 has a shape curved substantially in a J-shape.
The first pressure valve 38 is provided at a portion where the short portion 36 is connected to the long portion 35. Thereby, the inside of the bag body 34 can be partitioned into the long part 35 and the remaining part.
The second pressure valve 39 is provided at a portion where the protrusion 37 is connected to the short portion 36. Thereby, the short portion 36 and the protruding portion 37 can be partitioned inside the bag body 34.

FIG. 6 is an explanatory diagram of the operation of the embracing airbag 32 of FIG.
As shown in FIG. 6A, in the embracing airbag 32, first, the long portion 35 is deployed in the front-rear direction so as to extend from the rear side to the front side of the occupant.
Then, when the long portion 35 extends sufficiently forward to increase its internal pressure, the first pressure valve 38 opens, and the short portion 36 expands upward. The deployment direction of the embracing airbag 32 changes from the front side to the upper side.
Further, when the short portion 36 extends sufficiently upward to increase the internal pressure, the second pressure valve 39 opens, and the protrusion 37 is deployed rearward.
As described above, the embracing airbag 32 of the present embodiment is deployed in the order of the long portion 35, the short portion 36, and the protrusion 37, and finally is deployed in a substantially J-shape as shown in FIG. . Therefore, as shown in FIG. 3, the occupant sitting on the seat 5 starts to deploy forward from the rear side of the upper body of the occupant by passing under the armpits or near the side surface, and then moves toward the front of the upper arm or the surrounding area. To change the deployment direction upward. Further, finally, the occupant sitting on the seat 5 can roll forward from the rear side of the upper body to reach a curved shape reaching the front side of the upper arm or a peripheral part thereof.

In the present embodiment, the embracing airbag 32 wraps forward from the rear side of the upper body of the occupant seated on the seat 5 and deploys to the front of the upper arm or the surrounding area. Therefore, in the event of a collision, the upper body of the occupant trying to move in a direction away from the seat 5 is caught by the folded or bent deployed airbag 32 and is less likely to move further. This makes it difficult for the occupant's body to move in a plurality of collision modes such as a frontal collision and a side collision.
In addition, in the present embodiment, the embracing airbag 32 starts to deploy forward from the rear side of the occupant seated on the seat 5 from behind the armpits or near the side, and thereafter to the upper arm or the vicinity thereof. The deployment direction is turned upward toward the front of the site. Therefore, even when the occupant is seated on the seat 5, the occupant can be deployed forward from under the occupant and further toward the front of the upper arm or the surrounding area.

  Further, in the present embodiment, the embracing airbag 32 has a bent or curved shape in which the occupant seated on the seat 5 wraps around from the rear side of the upper body to reach the upper arm or the front side of the peripheral part thereof. And a pressure valve for partitioning the interior of the bag body into at least a portion of the occupant seated on the seat 5 extending from the rear side to the front of the occupant and the rest. Then, when the pressure valve opens due to the rise in pressure, the developing direction of the bag body 34 changes from the front side to the upper side. Therefore, the portion of the embracing airbag 32 that expands upward can be difficult to deploy until the embracing airbag 32 expands to the front of the occupant. Even when the occupant is seated on the seat 5, the occupant can be deployed forward from the armpit side of the occupant and further toward the front of the upper arm or the surrounding area.

[Second embodiment]
The occupant protection device according to the second embodiment is basically the same as that of the first embodiment. Therefore, portions common to the first embodiment are denoted by the same names and reference numerals, and description thereof is omitted. In the following description, differences will be mainly described.

FIG. 7 is an explanatory diagram of the structure of the embracing airbag 32 of the second embodiment.
FIG. 8 is an explanatory diagram of the operation of the embracing airbag 32 of FIG.

As shown in FIG. 7, the embracing airbag 32 has a bag body 34 and a tether 40.
The bag 34 has a long part 35, a short part 36, and a protrusion 37. As a whole, it has a shape curved in a substantially J-shape.
The tether 40 connects a first position above the bag 34 and a second position below the bag 34. The first position is the upper part of the connection between the long part 35 and the short part 36. The second position is a lower part of the short portion 36. In this case, as shown in FIG. 8A, the second position is the front side (front end side) from the first position in the bag body 34 deployed from the rear side of the occupant seated on the seat 5 to the front. ).

As shown in FIG. 8A, first, the entire embracing airbag 32 is linearly deployed in the front-rear direction so as to extend from the rear side to the front side of the occupant. In the initial body developed in a straight line, the second position where the tether 40 is connected is located on the front side of the first position.
Further, when the embracing airbag 32 is deployed, as shown in FIG. 8 (B), the tether 40 extends completely between the first position and the second position.
Further, when the embracing airbag 32 is deployed, the embracing airbag 32 is deployed by the extended tether 40 so that the second position rotates around the first position. That is, the deployment direction of the bag body 34 changes from the front side to the upper side. And finally, as shown in FIG. 8C, it is developed into a substantially J-shape.
Accordingly, as shown in FIG. 3, the embracing airbag 32 of the present embodiment starts to deploy forward from the rear of the upper body of the occupant sitting on the seat 5, passing under the armpit or near the side surface, and Thereafter, the deploying direction can be changed upward toward the front of the upper arm or the surrounding area. Further, finally, the occupant sitting on the seat 5 can roll forward from the rear side of the upper body to reach a curved shape reaching the front side of the upper arm or a peripheral part thereof.

  In the present embodiment, in the bag 34 in a state where the occupant seated on the seat 5 is deployed from the rear side to the front, the first position at the upper part of the bag 34 and the second position at the lower part of the bag 34 are set. And a tether 40 to be connected. The second position is located forward of the first position in the bag 34 in a state where the occupant seated on the seat 5 is deployed forward from the rear side of the upper body. Therefore, when the bag body 34 expanded forward is further expanded, the second position is rotated around the first position by the tether 40, and the expanding direction of the bag body 34 is changed from the front side to the upper side. Can be. Even when the occupant is seated on the seat 5, the occupant can be deployed forward from the armpit side of the occupant and further toward the front of the upper arm or the surrounding area.

In the present embodiment, the bag body 34 of the embracing airbag 32 has a substantially J-shaped curved shape.
In addition, for example, the bag body 34 may have a shape that extends linearly from the rear side to the front side of the upper body of the occupant sitting on the seat 5 as shown in FIG. Alternatively, a shape between a shape curved substantially in a J shape and a straight shape may be used. Even with these shapes, the deployment direction of the embracing airbag 32 can be changed from the front side to the upper side by the tether 40.

[Third embodiment]
The occupant protection device according to the third embodiment is basically the same as that of the first embodiment. Therefore, portions common to the first embodiment are denoted by the same names and reference numerals, and description thereof is omitted. In the following description, differences will be mainly described.

FIG. 9 is an explanatory diagram of the structure of the embracing airbag 32 of the third embodiment.
FIG. 10 is an explanatory diagram of the operation of the embracing airbag 32 of FIG.

As shown in FIG. 9, the embracing airbag 32 has a bag 34 and a different extension 42 provided on the bag 34.
The bag body 34 has a linear rod-shaped development part 41 and a protrusion 37 provided on the top end of the rod-shaped development part 41.
The different extension part 42 is provided at the center of the upper surface of the bar-shaped development part 41 of the bag body 34. The different extension portion 42 of the present embodiment is a portion formed to be less likely to extend than other portions of the bag 34. For example, by making the thickness and knitting density of the fibers of the different extension portions 42 larger than those of the other portions, the different extension portions 42 are harder to extend than the other portions.

As shown in FIG. 10A, first, the entire embracing airbag 32 is linearly deployed in the front-rear direction so as to extend from the rear side to the front side of the occupant. In addition, the protrusion 37 also expands upward from the tip of the rod-like deploying portion 41 that has developed linearly.
Furthermore, when the internal pressure of the embracing airbag 32 increases, the embracing airbag 32 attempts to further deploy. At this time, the lower part on the opposite side of the different extension part 42 is wider than the upper part where the different extension part 42 is provided. As a result, as shown in FIG. 10B, the linear rod-shaped development portion 41 of the bag body 34 is bent upward. That is, the deployment direction of the embracing airbag 32 changes from the front side to the upper side. The embracing airbag 32 is deployed in a substantially J-shape.
Accordingly, as shown in FIG. 3, the embracing airbag 32 of the present embodiment starts to deploy forward from the rear of the upper body of the occupant sitting on the seat 5, passing under the armpit or near the side surface, and Thereafter, the deploying direction can be changed upward toward the front of the upper arm or the surrounding area. Further, finally, the occupant sitting on the seat 5 can roll forward from the rear side of the upper body to reach a curved shape reaching the front side of the upper arm or a peripheral part thereof.

  In the present embodiment, the bag body 34 of the embracing airbag 32 is provided with a different extension 42. The differently extending portion 42 is at least one of an upper portion and a lower portion of the bag 34 in a state where the upper portion of the occupant seated on the seat 5 is expanded from the rear side to the front of the occupant. Is provided. Therefore, when the bag body 34 that has been developed forward is further expanded, the lower part is extended from the upper part of the bag body 34 by the different extension part 42, and the developing direction of the bag body 34 is changed from the front side to the upper side. Can be. Even when the occupant is seated on the seat 5, the occupant can be deployed forward from the armpit side of the occupant and further toward the front of the upper arm or the surrounding area.

In the present embodiment, the bag 34 of the embracing airbag 32 has a substantially straight shape.
In addition to this, for example, the bag body 34 may have a substantially J-shaped curved shape as shown in FIG. Alternatively, a shape between a shape curved substantially in a J shape and a straight shape may be used. Even with these shapes, the deployment direction of the embracing airbag 32 can be changed from the front side to the upper side by providing the different extension portions 42.

Further, in the present embodiment, the different extension portion 42 is a portion formed to be less likely to extend than the other portion of the bag 34. Such a different extension part 42 may be provided at the center of the lower surface of the bar-shaped development part 41 of the bag body 34.
In addition, for example, the different extension portion 42 is a portion formed to be more easily extended than other portions of the bag body 34. For example, by making the thickness and knitting density of the fibers of the different extension portions 42 smaller than those of the other portions, the different extension portions 42 can be more easily extended than the other portions.
Further, for example, a differently extending portion 42 that is difficult to expand is provided at the center of the upper surface of the rod-shaped developing portion 41 of the bag body 34, and the differently extending portion 42 that is easily expanded is provided on the lower surface of the rod-shaped developing portion 41 of the bag body 34. It may be provided at the center.

[Fourth embodiment]
The occupant protection device according to the fourth embodiment is basically the same as that of the first embodiment. Therefore, portions common to the first embodiment are denoted by the same names and reference numerals, and description thereof is omitted. In the following description, differences will be mainly described.

FIG. 11 is an explanatory diagram of the structure of the embraced airbag 32 of the fourth embodiment.
FIG. 12 is an explanatory diagram of the operation of the embracing airbag 32 of FIG.

As shown in FIG. 11, the embracing airbag 32 has a first bag 43 and a second bag 44.
The first bag 43 has a linear rod-shaped development part 41 and a projection 37 provided on the top end of the rod-shaped development part 41.
The second bag body 44 is provided integrally below the rod-shaped development part 41 of the first bag body 43. In addition, the second bag body 44 is formed longer than the rod-shaped development part 41 of the first bag body 43, and the rear end of the second bag body 44 on the main body side is the rod-shaped development part 41 of the first bag body 43. May extend from the rear end of the main body side to the rear side.
Further, the main body 33 in which the embracing airbag 32 is deployed is provided rotatably in the front-rear direction at the height position of the first bag body 43 with respect to the back of the seat 5.

As shown in FIG. 12A, in the embracing airbag 32, first, the first bag body 43 is deployed. Thereby, the embracing airbag 32 is linearly deployed in the front-rear direction from the rear side to the front side of the occupant. In addition, the protrusion 37 also expands upward from the tip of the rod-like deploying portion 41 that has developed linearly.
Next, in the embracing airbag 32, the second bag body 44 is deployed. Thereby, the embracing airbag 32 is entirely raised so that the tip thereof moves upward. The main body 33 rotates. The first bag body 43 expanded forward moves upward. As a result, as shown in FIG. 12B, the deployment direction of the embracing airbag 32 changes from the front side to the upper side. The embracing airbag 32 is deployed in a substantially L-shape.
Accordingly, as shown in FIG. 3, the embracing airbag 32 of the present embodiment starts to deploy forward from the rear of the upper body of the occupant sitting on the seat 5, passing under the armpit or near the side surface, and Thereafter, the deploying direction can be changed upward toward the front of the upper arm or the surrounding area. Further, finally, the occupant sitting on the seat 5 can roll forward from the rear side of the upper body to reach a curved shape reaching the front side of the upper arm or a peripheral part thereof.

  In the present embodiment, the embracing airbag 32 includes a first bag body 43 that wraps forward from the rear side of the upper body of the occupant seated on the seat 5 and reaches the front side of the upper arm or a peripheral part thereof, And a second bag body 44 that is integrated on the lower side of the base 43 and expands in the front-rear direction. Then, the second bag body 44 is deployed later than the first bag body 43. Therefore, the first bag body 43 that has been deployed forward can be moved upward when the second bag body 44 integrated below is deployed. Even when the occupant is seated on the seat 5, the occupant can be deployed forward from under the occupant and further toward the front of the upper arm or the surrounding area.

In the present embodiment, the bag 34 of the embracing airbag 32 has a substantially straight shape.
In addition to this, for example, the first bag body 43 may have a shape curved in a substantially J shape. Alternatively, a shape between a shape curved substantially in a J shape and a straight shape may be used. Even with these shapes, the direction of deployment of the embracing airbag 32 can be changed from the front side to the upper side by integrating the second bag body 44 below the first bag body 43.

  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 spirit of the invention.

1 ... Car (vehicle)
2 front room 3 passenger room 4 rear room 5 seat 11 front airbag device 12 front airbag 13 main body 16 curtain airbag device 17 curtain airbag 18 main body 21 side airbag device 22 ... Side airbag 23 ... Main body 31 ... Blade tightening airbag device 32 ... Enclosed airbag 33 ... Main body 34 ... Bag 35 ... Long part 36 ... Short part 37 ... Protrusion part 38 ... First pressure valve 39 ... Second Pressure valve 40 ... Tether 41 ... Bar-shaped development part 42 ... Different extension part 43 ... First bag body 44 ... Second bag body 51 ... Imaging device 52 ... Acceleration sensor 53 ... Speed sensor 54 ... Brake operation sensor 55 ... Angular velocity sensor 56 ... Belt tension sensor 57: Belt winding amount sensor 58: Seating sensor 59: Timer 60: Control unit

Claims (6)

A seat on which the occupant of the vehicle sits,
An airbag device having an embracing airbag that extends forward from the rear side of the upper body of the occupant seated on the seat and deploys to the front side of the upper arm or a peripheral part thereof,
Has,
The embracing airbag,
From the upper side of the occupant seated in the seat, start deploying forward from the rear side near the armpit or side surface, and then change the deploying direction upward toward the front side of the upper arm or the surrounding area,
Vehicle occupant protection device. The embracing airbag,
A bag body having a bent or curved shape that wraps forward from the rear side of the upper body of the occupant seated on the seat and reaches the front side of the upper arm or the surrounding area,
A pressure valve that partitions the interior of the bag body into a portion that deploys at least from the rear side of the upper body of the occupant seated on the seat and a remaining portion,
Has,
The opening direction of the bag body is changed from the front side to the upper side by the pressure valve being opened by a rise in pressure,
The vehicle occupant protection device according to claim 1. The embracing airbag,
A bent or curved shape in which the occupant seated on the seat wraps forward from the rear side of the upper body and reaches the front side of the upper arm or the surrounding area, a straight line from the rear side of the upper body of the occupant seated on the seat to the front. And a bag body having a shape extending in the middle, or a shape in between them,
In the bag in a state where the occupant seated on the seat is deployed forward from the rear side of the upper body, a tether that connects a first position at an upper portion of the bag and a second position at a lower portion of the bag,
Has,
The second position is located on the front side of the first position, in the bag in a state where the occupant seated on the seat is deployed forward from the rear side of the upper body,
By rotating the second position around the first position by the tether, the developing direction of the bag is changed from the front side to the upper side,
The vehicle occupant protection device according to claim 1. The embracing airbag,
A bent or curved shape in which the occupant seated on the seat wraps around from the rear side of the upper body to reach the upper side of the upper arm or the surrounding area, and a straight line from the rear side of the upper body of the occupant seated on the seat to the front. And a bag body having a shape extending in the middle, or a shape in between them,
In the bag body in a state where the occupant seated on the seat is deployed from the rear side of the upper body to the front side, the bag body is provided on at least one of the upper part and the lower part such that the upper part is less likely to extend than the lower part of the bag body. Different extension part,
Has,
By extending the lower part from the upper part of the bag by the different extension part, the developing direction of the bag is changed from the front side to the upper side,
The vehicle occupant protection device according to claim 1. The embracing airbag,
A bent or curved shape in which the occupant seated on the seat wraps around from the rear side of the upper body to reach the upper side of the upper arm or the surrounding area, and a straight line from the rear side of the upper body of the occupant seated on the seat to the front. A shape extending to, or a first bag having a shape in between them,
A second bag that is integrated on the lower side of the first bag and expands in the front-rear direction,
Has,
By deploying the second bag later than the first bag, the first bag that has been deployed moves upward.
The vehicle occupant protection device according to claim 1. The airbag device is provided as a pair on the left and right sides of the occupant seated on the seat, wraps around the front of the left and right shoulders, the left and right collarbones, or the left and right upper arms and tightens the wings.
An occupant protection device for a vehicle according to any one of claims 1 to 5.

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