JP2018171989A - Vehicle occupant protection device - Google Patents

Abstract

[PROBLEMS] To improve occupant protection performance.
An occupant protection device (10) is provided on a seat (4) side of a vehicle (1), an armrest (5) on which an occupant arm seated on the seat (4) can be placed, an armrest (5), and the arm portion (5) And a control unit 19 that restrains the arm portion to the armrest 5 by the restraining member 20 when a collision of the vehicle 1 is detected or predicted.
[Selection] Figure 4

Description

  The present invention relates to an occupant protection device for a vehicle such as an automobile.

  In an automobile, an air bag such as a front air bag is deployed around an occupant and the occupant is collapsed into the airbag to absorb the impact acting on the occupant during a collision (Patent Document 1).

JP 2006-037134 A

However, for example, a front airbag that is deployed in front of the seat needs to be largely deployed from the front to the rear basically toward the occupant seated on the seat from the interior member arranged around the seat, It is necessary to absorb the occupant's load in the expanded state.
For this reason, an inflator used in a front airbag or the like needs to generate a lot of high-pressure gas instantaneously. In addition, it takes time, if instantaneously, from the start of the deployment of the front airbag to the deployment of the front airbag to a state capable of absorbing the load.
As described above, in the airbag that is deployed from the interior member arranged around the seat toward the occupant seated on the seat, the balance between the deployment capacity and the effect is basically not good.
Moreover, if the size of the airbag, such as the width of the airbag, is increased to cope with the occupant falling due to various collisions, or if the deployment speed is increased in order to increase immediacy, the balance will further deteriorate. It will be.

In addition, an airbag that is deployed from an interior member arranged around the seat toward an occupant seated on the seat takes time to deploy, and the upper body of the occupant may fall forward during the deployment period. The passenger's seating posture may change.
And even if the front airbag is deployed to an occupant whose waist has already floated from the seat or whose upper body has collapsed, the front airbag may not be able to fully exhibit its performance.

  Thus, in the occupant protection device, it is required to improve the occupant protection performance.

  An occupant protection device for a vehicle according to the present invention is provided on a seat side of a vehicle, an armrest on which an arm portion of an occupant seated on the seat can be placed, the armrest, and the arm portion on the armrest A restraining member for restraining, and a control part for restraining the arm portion to the armrest by the restraining member when a collision of the vehicle is detected or predicted.

  Suitably, the said restraining member is good to restrain the said arm part on the said armrest.

  Preferably, the restraining member is restrained by pressing a forearm portion of an occupant seated on the seat from above and sandwiching it between the armrest.

  Suitably, the space | interval of the said restraint member and the said armrest is good in the front side of the passenger | crew who seated on the said sheet | seat being narrower than the rear side.

  Preferably, the restraining member restrains the arm portion on the front side of the upper arm portion so that an elbow portion of an occupant seated on the seat hits the armrest.

  Preferably, the restraining member has a restraining airbag that starts to be deployed upward from a side surface of the armrest, and the restraining airbag that has started to be deployed is curved so as to wrap around the upper side of the armrest. It is good to expand.

  Preferably, the restraining member has a pair of restraining airbags that start to be deployed upward from both side surfaces of the armrest, and the pair of restraining airbags that have started to be deployed on the armrest It is good to expand | deploy so that it may spread and to mutually contact on the upper side of the said armrest.

  Preferably, the armrest and the restraining member are provided on both left and right sides of the seat.

  Preferably, the vehicle has a front airbag device that deploys a front airbag in front of the seat, and the control unit restrains the arm portion to the armrest by the restraining member when a collision of the vehicle is predicted. The front airbag may be deployed when a collision of the vehicle is detected.

  Preferably, the control unit does not restrain the arm portion by the restraint member when the vehicle is expected to roll over or turn over due to a collision, even when the vehicle collision is predicted. Good.

  Preferably, when the control unit detects that the vehicle rolls over or turns over due to a collision, the control unit releases the restraint of the arm by the restraining member.

In the present invention, when a vehicle collision is detected or predicted, the arm portion of the occupant seated on the seat is restrained by the restraining member provided on the armrest. Accordingly, the occupant can be restrained in a short time by causing the restraining member to function near the seat.
In addition, if the occupant's arm seated on the seat is not restrained, the occupant's waist and upper part can be lifted even if the occupant's waist floats off the seat or the occupant's upper body falls. It becomes possible to maintain the body seated on the seat.
As a result, the occupant falls, for example, from a state in which the back and waist remain attached to the seat at the time of the collision, and the occupant can fall into a desired state with respect to, for example, the front airbag that is deployed at the time of the collision. .
The occupant protection device can maintain the posture of the occupant seated on the seat by the restraint member that operates near the occupant and can absorb the impact acting on the occupant in a desired state in the event of a collision.

FIG. 1 is an explanatory diagram of an automobile to which an occupant protection device according to an embodiment of the present invention can be applied. FIG. 2 is an explanatory diagram of occupant protection performance by the front airbag. FIG. 3 is a block diagram of an occupant protection device according to the present invention. FIG. 4 is a front view illustrating the armrest airbag device according to the first embodiment. FIG. 5 is a plan view of the armrest airbag device of FIG. 6 is a side view of the armrest airbag device of FIG. FIG. 7 is a flowchart of processing performed when the control unit predicts a collision. FIG. 8 is an explanatory view of a deployment operation of the armrest airbag device. FIG. 9 is a flowchart of processing performed when the control unit detects a collision. FIG. 10 is a side view illustrating an armrest airbag device according to the second embodiment. FIG. 11 is an explanatory diagram of an armrest airbag device according to the third embodiment. FIG. 12 is an explanatory diagram of an armrest airbag device according to the fourth embodiment. FIG. 13 is a flowchart of processing performed when the control unit according to the fifth embodiment predicts a collision. FIG. 14 is a flowchart of processing performed when the control unit according to the sixth embodiment detects a collision.

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

[First Embodiment]
FIG. 1 is an explanatory diagram of an automobile 1 to which an occupant protection device 10 for an automobile 1 according to an embodiment of the present invention can be applied.
FIG. 1 shows an automobile 1 as viewed from above. The automobile 1 is an example of a vehicle.
The automobile 1 in FIG. 1 has a vehicle body 2. In the passenger compartment 3 of the vehicle body 2, a plurality of seats 4 on which the passengers sit are arranged. A handle, an accelerator pedal, and a brake pedal (not shown) are arranged in front of the right front seat 4. When an occupant seated on the seat 4 operates a handle or the like, the automobile 1 moves forward, stops, reverses, turns right, and turns left.

By the way, the automobile 1 may collide with other automobiles 1 or the like while traveling. The input of the collision may be on the front surface of the vehicle body 2 or on the side surface. Further, on the front surface, there are a full-wrap collision input at the center, an offset collision shifted laterally, and a collision input obliquely.
In order to deal with these various types of collisions, in the automobile 1, various airbag devices are used together with the seat belt device 14.

FIG. 2 is an explanatory diagram of occupant protection performance by the front airbag 18.
In FIG. 2A, a seat belt 15 is stretched in front of an occupant seated on the seat 4. Further, a front airbag 18 is deployed in front of the seat 4.
In this case, the occupant seated on the seat 4 is restrained by the seat belt 15 and the upper body falls forward while sitting on the seat 4. The upper body that has fallen forward falls into the deployed front airbag 18.
Thereby, the impact which acts on a passenger | crew at the time of a collision can be absorbed.

However, the front airbag 18 or the like that is deployed in front of the seat 4 is basically largely deployed from the front to the rear from an interior member such as a dashboard disposed around the seat 4 toward an occupant seated on the seat 4. In addition, it is necessary to absorb the occupant's load in the greatly expanded state.
For this reason, an inflator used in the front airbag 18 or the like needs to generate a lot of high-pressure gas instantaneously. In addition, it takes time, if instantaneously, from the start of the deployment of the front airbag 18 to the deployment of the front airbag 18 to a state capable of absorbing the load.
Thus, in the airbag that is deployed from the interior member arranged around the seat 4 toward the occupant seated on the seat 4, the balance between the deployment capacity and the effect is basically not good.
Moreover, if the size of the airbag, such as the width of the airbag, is increased to cope with the occupant falling due to various collisions, or if the deployment speed is increased in order to increase immediacy, the balance will further deteriorate. It will be.

Further, in the airbag that is deployed from the interior member arranged around the seat 4 toward the occupant seated on the seat 4, since it takes time to deploy, the upper body of the occupant falls forward during the deployment period. The seating posture of the occupant may change.
For example, in FIG. 2B, the occupant's waist is floating from the seat 4. In FIG. 2C, the upper body of the occupant has fallen forward first.
Even if the front airbag 18 is deployed after such a situation, for example, the timing and position of the front airbag 18 are different from those planned in FIG. There is a possibility that it cannot be demonstrated.

  As described above, the occupant protection device 10 is required to improve the occupant protection performance.

FIG. 3 is a block diagram of the occupant protection device 10 according to the present invention.
3, the occupant protection device 10 includes an imaging sensor 11, a collision sensor 12, a timer 13, a seat belt device 14, a front airbag device 16, an armrest airbag device 20, and a control unit 19 to which these are connected. .

The imaging sensor 11 is disposed forward, for example, inside the windshield of the vehicle body 2 and captures an image outside the vehicle in front of the automobile 1.
The collision sensor 12 is an acceleration sensor attached to the vehicle body 2, for example, and detects the impact of the collision acting on the vehicle body 2.
The timer 13 measures time.
The seat belt device 14 includes a seat belt 15, a retractor (not shown), and the like. The seat belt 15 is stretched in front of an occupant seated on the seat 4. The retractor is provided, for example, on the B pillar of the vehicle body 2 and winds up the seat belt 15.
The front airbag device 16 includes an airbag main body 17 containing an inflator and a front airbag 18 that is deployed from the airbag main body 17. The front airbag device 16 is disposed, for example, on the dashboard of the passenger compartment 3. Thereby, the front airbag device 16 is disposed in front of the front seat 4.

4-6 is explanatory drawing of the armrest airbag apparatus 20 which concerns on 1st Embodiment.
4 is a front view of the vehicle body 2 as viewed from the front side, FIG. 5 is a plan view of the vehicle body 2 as viewed from above, and FIG. 6 is a side view of the vehicle body 2 as viewed from the left side.
As shown in FIGS. 4 to 6, a pair of left and right armrests 5 are attached to the left and right sides of the back portion of the seat 4. The armrest 5 may be provided on both the left and right sides of the seat 4, and may be formed on a door panel or a center console that is an interior member located on the left and right sides of the seat 4.
Each armrest 5 extends along the front-rear direction of the automobile 1 above the seating surface of the seat 4.
Accordingly, the occupant can sit on the seat 4 in a posture in which both left and right arm portions are placed on the pair of left and right armrests 5.
Not only the passenger in the passenger seat and the passenger in the rear seat, but also the passenger in the driver's seat can sit on the seat 4 in the posture shown in FIGS.

Each of the pair of left and right armrests 5 incorporates an armrest airbag device 20. The armrest airbag device 20 includes an airbag main body 21 containing an inflator and an armrest airbag 22 that is deployed from the airbag main body 21.
In the right armrest airbag device 20, as shown in FIG. 4, the armrest airbag 22 is deployed upward from the left inner surface of the armrest 5. The armrest airbag 22 deployed upward is curved toward the right side in the left-right direction.
Further, in the left armrest airbag device 20, as shown in FIG. 4, the armrest airbag 22 is deployed upward from the right inner surface of the armrest 5. The armrest airbag 22 deployed upward is curved toward the left side in the left-right direction.
Accordingly, the left and right forearm portions placed on the pair of left and right armrests 5 are covered with the armrest airbag 22. The left and right forearm portions are pressed from above by the armrest airbag 22 and are restrained by being sandwiched between the upper surface of the armrest 5.

For example, the control unit 19 predicts a collision of the automobile 1 based on a captured image of the imaging sensor 11.
Further, the collision of the automobile 1 is determined based on the collision detection of the collision sensor 12.
When the collision of the automobile 1 is detected or predicted, the control unit 19 operates the seat belt device 14, the front airbag device 16, and the armrest airbag device 20 at the timing measured by the timer 13.
The seat belt device 14 performs a pre-tensioning operation for winding the seat belt 15 before the collision under the control of the control unit 19.
The front airbag device 16 ignites the inflator and deploys the front airbag 18 with high-pressure gas under the control of the control unit 19. The front airbag 18 is largely deployed from the front to the rear.
The armrest airbag device 20 ignites the inflator and deploys the armrest airbag 22 with high-pressure gas under the control of the control unit 19. The armrest airbag 22 is restrained by sandwiching the forearm portion with the upper surface of the armrest 5.

FIG. 7 is a flowchart of processing performed when the control unit 19 predicts a collision.
For example, the control unit 19 periodically performs the process of FIG. 7 based on the image of the imaging sensor 11.
In the collision prediction process, the control unit 19 first checks whether or not a collision is predicted (step ST1).
If a collision is predicted, the control unit 19 activates the armrest airbag device 20 at the timing measured by the timer 13 (step ST2).
In addition, the control unit 19 may cause the seat belt device 14 to perform a pretension operation.

FIG. 8 is an explanatory view of the deployment operation of the armrest airbag device 20.
As shown in FIG. 8A, the inflator is ignited in the armrest airbag device 20 with the forearm portion of the occupant seated on the seat 4 placed on the armrest 5.
When high pressure gas begins to be generated by ignition of the inflator, the armrest airbag 22 starts to expand upward from the inner surface of the armrest 5 on the seat 4 side as shown in FIG.
Thereafter, as shown in FIG. 8C, the armrest airbag 22 is curved so as to fall toward the upper surface of the armrest 5.
As a result, the forearm portion of the occupant is pressed from above the curved distal end portion of the armrest airbag 22 between the armrest airbag 22 and the outer wall portion of the armrest 5. The passenger's forearm is restrained by the armrest 5.

FIG. 9 is a flowchart of processing performed when the control unit 19 detects a collision.
The control unit 19 periodically performs the process of FIG. 9 based on, for example, a collision detection signal from the collision sensor 12.
In the collision detection process, the control unit 19 first checks whether or not a collision is detected (step ST11).
And when a collision is detected, the control part 19 operates the front airbag apparatus 16 at the timing measured by the timer 13 (step ST12).
As a result, as shown in FIG. 6, the occupant receives the impact of the collision in a state where the occupant is seated so as to attach the waist and back to the seat 4. Also, the upper body falls forward from that state. The upper body can fall into the deployed front airbag 18 in a suitable state.

As described above, in the present embodiment, when a collision of the automobile 1 is detected or predicted, the forearm portion of the arm portion of the occupant seated on the seat 4 is restrained by the armrest airbag device 20 provided in the armrest 5.
Therefore, the armrest airbag device 20 can be operated near the seat 4 to restrain the occupant within a short time.
Moreover, even if the occupant's arm seated on the seat 4 is not restrained, even if the occupant's waist floats off the seat 4 or the occupant's upper body falls, Therefore, it is possible to keep the occupant's waist and upper body seated on the seat.
As a result, the occupant falls, for example, from the state in which the back and the waist remain attached to the seat 4 at the time of the collision, and the occupant falls into a desired state with respect to the front airbag 18 that is deployed at the time of the collision, for example. Can do.
The occupant protection device 10 uses the armrest airbag device 20 that operates near the occupant to maintain the posture of the occupant seated on the seat 4 and absorbs an impact that acts on the occupant in a desired state in the event of a collision. Can do.
In the present embodiment, the armrest airbag device 20 restrains the arm portion on the armrest 5. Therefore, the arm portion of the occupant is supported by the armrest 5. When the upper body of the occupant rotates forward about the waist, the upper arm portion mounted on the armrest 5 serves as a support and exhibits a drag that suppresses the rotation. This makes it difficult for the upper body of the occupant to fall forward or slows down.
In the present embodiment, the armrest airbag device 20 includes an armrest airbag 22 that starts to expand upward from the side surface of the armrest 5, and the armrest airbag 22 that has started to expand upward wraps around the armrest 5. To bend and unfold. Therefore, the arm portion that is displaced from or disengaged from the armrest 5 can be pushed onto the armrest 5 by being pushed by the armrest airbag 22 that is deployed upward from the lower side. In this state, the armrest airbag 22 can restrain the arm portion between the armrest airbag 22 and the armrest 5.
In the present embodiment, the armrest 5 and the armrest airbag device 20 are provided as a pair on both the left and right sides of the seat 4. Therefore, both arms can be restrained by the armrest 5. Even if the upper body of the occupant seated on the seat 4 is likely to fall forward, the front of the passenger tends to fall forward.
In the present embodiment, when the collision of the automobile 1 is predicted, the arm portion is restrained by the armrest 5 by the armrest airbag device 20, and when the collision of the automobile 1 is detected, the front airbag 18 is deployed. Therefore, the passenger's back and waist can be attached to the seat 4 before the collision, and in the event of the collision, the vehicle can fall forward from that state and fall into the front airbag 18. The occupant protection device 10 easily exhibits desired shock absorption performance.

[Second Embodiment]
Next, an occupant protection device 10 for an automobile 1 according to a second embodiment of the present invention will be described.
Hereinafter, the same reference numerals are used for the same configurations as those in the first embodiment, and the description thereof is omitted. Also, differences from the first embodiment will be mainly described.

FIG. 10 is an explanatory diagram of the armrest airbag device 20 according to the second embodiment. FIG. 10 is a side view seen from the left side of the vehicle body 2.
As shown in FIG. 10, the curved distal end portion of the deployed armrest airbag 22 has a lower surface formed in an inclined surface with a front lowering.
As a result, the arm portion of the occupant is restrained in a state where the lower surface of the distal end portion of the armrest airbag 22 is sandwiched between the inclined surface with the front lowering and the armrest 5.

As described above, in the present embodiment, the lower surface of the distal end portion of the armrest airbag 22 is formed as a front-facing inclined surface.
Therefore, the distance between the front end portion of the armrest airbag 22 and the upper surface of the armrest 5 becomes narrower toward the front along the thickness of the forearm portion. It is a tapered space.
For this reason, the armrest airbag 22 can apply a uniform pressure to the entire forearm portion from above and press the entire forearm portion onto the armrest 5 to be stabilized. The forearm can be prevented from sliding forward on the armrest 5.
As a result, the positions of the forearm and the elbow on the armrest 5 can be stabilized.
By stabilizing the position of the elbow on the armrest 5, the upper body's shoulder that is about to fall forward due to the impact of a collision can be supported by the upper arm, making it difficult to fall forward.
In particular, as shown in FIG. 10, when the elbow is positioned in front of the shoulder, a drag can be applied to the upper body that is about to fall forward.

[Third Embodiment]
Next, an occupant protection device 10 for an automobile 1 according to a third embodiment of the present invention will be described.
Hereinafter, the same reference numerals are used for the same configurations as those in the first embodiment, and the description thereof is omitted. Also, differences from the first embodiment will be mainly described.

FIG. 11 is an explanatory diagram of an armrest airbag device 20 according to the third embodiment. FIG. 11A is a front view seen from the front side of the vehicle body 2, and FIG. 11B is a side view seen from the left side of the vehicle body 2.
As shown in FIG. 11, the curved distal end portion of the armrest airbag 22 deployed upward is positioned in front of the upper arm portion and presses the upper arm portion from the front.
As a result, when the upper body of the occupant is about to fall forward, the occupant's elbow is in contact with the upper surface of the armrest 5.

As described above, in the present embodiment, the arm portion is urged downward and restrained on the front side of the upper arm portion so that the elbow portion of the passenger seated on the seat 4 hits the armrest 5.
Therefore, the upper arm portion is restrained from the front by the armrest airbag 22, so that the elbow portion is easily maintained on the armrest 5.
In particular, as shown in FIG. 11 (B), when the elbow part is positioned on the front side of the shoulder, the elbow part is pressed against the armrest 5 by the movement of the upper body trying to fall forward, and the elbow part on the armrest 5 Can be stabilized.
As a result, a drag can be applied to the upper body that is about to fall forward.

[Fourth Embodiment]
Next, an occupant protection device 10 for an automobile 1 according to a fourth embodiment of the present invention will be described.
Hereinafter, the same reference numerals are used for the same configurations as those in the first embodiment, and the description thereof is omitted. Also, differences from the first embodiment will be mainly described.

FIG. 12 is an explanatory diagram of an armrest airbag device 20 according to the fourth embodiment. 12A is a front view seen from the front side of the vehicle body 2, and FIG. 12B is a plan view seen from the upper side of the vehicle body 2.
As shown in FIG. 12, the armrest airbag device 20 disposed in each armrest 5 includes an inner armrest airbag 23 and an outer armrest airbag 24.
The inner armrest airbag 23 has a distal end portion that expands upward from the inner surface of the armrest 5 and extends to the left and right so as to spread on the armrest 5 on the upper side of the armrest 5.
The outer armrest airbag 24 has a distal end portion that expands upward from the outer surface of the armrest 5 and extends to the left and right so as to spread on the armrest 5 on the upper side of the armrest 5.
The distal end portion of the inner armrest airbag 23 and the distal end portion of the outer armrest airbag 24 are pressed against each other on the forearm portion placed on the armrest 5.
As a result, the forearm portion of the occupant is restrained on the armrest 5 from the left and right and above by the inner armrest airbag 23 and the outer armrest airbag 24.

As described above, in the present embodiment, the inner armrest airbag 23 and the outer armrest airbag 24 begin to expand upward from both side surfaces of the armrest 5 and contact each other on the upper side of the armrest 5.
Therefore, even if the forearm portion that is displaced from or disengaged from the armrest 5 before the operation of the armrest airbag device 20 is displaced either inside or outside the armrest 5, the inner armrest airbag 23 or the outer armrest The airbag 24 is pushed up onto the armrest 5.
Then, the pushed up forearm portion is restrained on the armrest 5 so as to be pressed from the left and right and above the upper surface of the armrest 5.

[Fifth Embodiment]
Next, an occupant protection device 10 for an automobile 1 according to a fifth embodiment of the present invention will be described.
Hereinafter, the same reference numerals are used for the same configurations as those in the first embodiment, and the description thereof is omitted. Also, differences from the first embodiment will be mainly described.

FIG. 13 is a flowchart of processing performed when the control unit 19 according to the fifth embodiment predicts a collision.
In the collision prediction process of FIG. 13, the control unit 19 first checks whether or not a collision is predicted (step ST1).
If a collision is predicted, the control unit 19 further confirms the possibility of the vehicle body 2 rollover or rollover (step ST21).
When a collision is predicted but there is no possibility of the vehicle body 2 rollover or rollover, the control unit 19 activates the armrest airbag device 20 at the timing measured by the timer 13 (step ST2).

As described above, in the present embodiment, even when a collision is predicted, the armrest airbag 22 does not restrain the arm portion when the vehicle body 2 may roll over or roll over.
Therefore, it is possible to prevent the arm portion from being restrained by the armrest 5 in the vehicle that has been rolled over or overturned.

[Sixth Embodiment]
Next, an occupant protection device 10 for an automobile 1 according to a sixth embodiment of the present invention will be described.
Hereinafter, the same reference numerals are used for the same configurations as those in the first embodiment, and the description thereof is omitted. Also, differences from the first embodiment will be mainly described.

FIG. 14 is a flowchart of processing performed when the control unit 19 according to the sixth embodiment detects a collision.
In the collision detection process of FIG. 14, the control unit 19 first checks whether or not a collision has been detected (step ST31).
When a collision is detected, the control unit 19 further confirms the possibility of the vehicle body 2 rollover or rollover (step ST32).
If a collision is predicted but the vehicle body 2 may roll over or roll over, the control unit 19 releases the restraint by the armrest airbag 22 (step ST33).

As described above, in this embodiment, when a collision is detected and there is a possibility that the vehicle body 2 rolls over or rolls over, the restraint of the arm portion by the armrest airbag 22 is released.
Therefore, it is possible to prevent the arm portion from being restrained by the armrest 5 in the vehicle that has been rolled over or overturned.

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

In the above embodiment, the armrest airbag device 20 is used to restrain the arm portion on the armrest 5.
In addition to this, for example, a restraining arm ring or the like may be protruded from the upper surface of the armrest 5, thereby restraining the arm portion on the armrest 5.

  DESCRIPTION OF SYMBOLS 1 ... Automobile (vehicle), 2 ... Vehicle body, 3 ... Passenger room, 4 ... Seat, 5 ... Armrest, 10 ... Passenger protection device, 11 ... Imaging sensor, 12 ... Collision sensor, 13 ... Timer, 14 ... Seat belt device, DESCRIPTION OF SYMBOLS 15 ... Seat belt, 16 ... Front airbag apparatus, 17 ... Airbag main body, 18 ... Front airbag, 19 ... Control part, 20 ... Armrest airbag apparatus (restraint member), 21 ... Airbag main body, 22 ... Armrest air Bag (restraint airbag), 23 ... inner armrest airbag (restraint airbag), 24 ... outer armrest airbag (restraint airbag).

Claims (11)

An armrest provided on the seat side of the vehicle and capable of placing an arm portion of an occupant seated on the seat;
A restraining member provided on the armrest and restraining the arm portion to the armrest;
A control unit that restrains the arm part to the armrest by the restraining member when a collision of the vehicle is detected or predicted;
An occupant protection device for a vehicle. The restraining member restrains the arm portion on the armrest;
The vehicle occupant protection device according to claim 1. The restraining member restrains the forearm portion of an occupant seated on the seat from above and is sandwiched between the armrest and restrained.
The vehicle occupant protection device according to claim 2. The interval between the restraining member and the armrest is narrower than the rear side on the front side of the occupant seated on the seat,
The vehicle occupant protection device according to claim 3. The restraining member restrains the arm portion on the front side of the upper arm portion so that an elbow portion of an occupant seated on the seat hits the armrest,
The vehicle occupant protection device according to claim 2. The restraining member has a restraining airbag that begins to expand upward from a side surface of the armrest,
The restraint airbag that has started to expand upward is curved and expanded so as to wrap around the upper side of the armrest.
The vehicle occupant protection device according to any one of claims 1 to 5. The restraining member has a pair of restraining airbags that start to expand upward from both side surfaces of the armrest,
The pair of restraining airbags that have started to expand upward are deployed so as to spread over the armrest and contact each other on the upper side of the armrest.
The vehicle occupant protection device according to any one of claims 1 to 5. The armrest and the restraining member are provided on both left and right sides of the seat,
The vehicle occupant protection device according to any one of claims 1 to 7. A front airbag device that deploys a front airbag in front of the seat,
The controller is
When the vehicle collision is predicted, the restraint member restrains the arm portion to the armrest,
Deploying the front airbag when a collision of the vehicle is detected;
The vehicle occupant protection device according to any one of claims 1 to 8. The control unit does not restrain the arm portion to the armrest by the restraining member, even when the vehicle is predicted to roll over or turn over due to a collision, even when the vehicle is predicted to collide,
The vehicle occupant protection device according to any one of claims 1 to 9. When the control unit detects that the vehicle rolls over or turns over due to a collision, the control unit releases the restraint of the arm portion by the restraining member.
The vehicle occupant protection device according to any one of claims 1 to 9.