JP2018171992A - Occupant protection device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the protection performance of an occupant. SOLUTION: An occupant protection device 10 is provided on the side of a seat 4 of a vehicle 1 and is provided on an armrest 5 on which an arm portion of an occupant seated on the seat 4 can be placed, and an armrest 5 provided from the armrest 5 to an armrest air. It has an armrest airbag device 20 that deploys the bag 22, and a control unit 19 that deploys the armrest airbag 22 when a collision of the vehicle 1 is detected or predicted. The armrest airbag 22 deployed from the armrest 5 presses the waist of the occupant seated on the seat 4 from the front. [Selection diagram] Fig. 5

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, when the vehicle collides, the lower body and lower back of the occupant's body may shift forward. When the lower body and the lower back are displaced forward, the upper body tilts forward while approaching the front airbag.

  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, an armrest provided on the armrest, and an armrest airbag from the armrest An armrest airbag device that deploys and a control unit that deploys the armrest airbag when a collision of the vehicle is detected or predicted, and the armrest airbag deployed from the armrest is seated on the seat Hold the occupant's waist from the front.

  Preferably, the armrest and the armrest airbag device are provided as a pair on both the left and right sides of the seat, and the armrest airbag deployed on both the left and right sides excludes a central portion of a waist portion of an occupant seated on the seat It is good to hold the left and right hips from the front.

  Preferably, the armrest has a lid that is half-opened rearward, and the armrest airbag is deployed rearward from the lid, and is located between the lid that is half-open and the waist of an occupant seated on the seat. Expand.

  Preferably, the armrest airbag device includes a tether that connects the armrest airbag and a rear portion of the armrest, and the armrest airbag is pulled by the tether by deploying inward from the armrest. Then, it is good to expand backward toward the waist of the occupant seated on the seat.

  Preferably, an actuator for moving the armrest rearward is provided, and the control unit may move the armrest rearward by the actuator after starting to deploy the armrest airbag from the armrest.

  Preferably, the armrest includes a front-rear extension part extending in the front-rear direction on the seat side, and a left-right extension part extending inwardly from the front-rear extension part toward the seat, The armrest airbag may be deployed rearward from the left and right extension part toward the waist of the occupant seated on the seat.

  Preferably, the armrest airbag has an upper convex portion that protrudes upward from the deployment tip portion.

  Preferably, the armrest airbag has waist convex portions at portions corresponding to both left and right waist portions excluding a central portion of a waist portion of an occupant seated on the seat, and the left and right waist portions are moved forward by the waist convex portions. It is good to hold from.

In the present invention, the armrest airbag is deployed from the armrest, and the waist of the occupant seated on the seat is pressed from the front.
Therefore, the waist part tends to stay at the position where it is seated on the seat and is difficult to shift forward.
In particular, since the armrest airbag is deployed from the armrest on the seat side, the waist portion can be pressed immediately at a short deployment distance, and the displacement of the waist portion can be accurately suppressed. Even when the waist has already started to move forward, the movement can be suppressed by pressing the movement from the front.
As a result, the upper body that falls forward with the waist as the center can easily rotate forward around the waist that remains at the seating position of the seat. The upper body that has fallen forward can fall into the front airbag in a desired state, and the impact acting on the occupant can be absorbed by the front airbag.

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 of 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 an explanatory diagram of a procedure for deploying the armrest airbag. FIG. 8 is an explanatory diagram of the deployment procedure of the armrest airbag device and the armrest airbag according to the second embodiment. FIG. 9 is an explanatory view of the deployment procedure of the armrest airbag device and the armrest airbag according to the third embodiment. FIG. 10 is an explanatory diagram of the deployment procedure of the armrest airbag device and the armrest airbag according to the fourth embodiment. FIG. 11 is an explanatory view showing a state in which the armrest airbag device according to the fifth embodiment is deployed. FIG. 12 is an explanatory view showing a state in which the armrest airbag device according to the sixth embodiment is deployed.

  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, for example, the front airbag 18 or the like deployed in front of the seat 4 needs to be largely deployed from the front to the rear basically from the interior member arranged around the seat 4 toward the passenger seated on the seat 4. In addition, it is necessary to absorb the occupant's load in the state of being largely deployed.
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 in 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.

Moreover, when the automobile 1 collides, the lower body and the waist may be shifted forward in the occupant's body.
When the lower body and the waist are displaced forward, the upper body tilts forward while approaching the front airbag 18 as shown in FIG.
Even if the occupant's body seated on the seat 4 is restrained by the seat belt 15, there is a possibility that the occupant's body may shift forward. Since the seat belt 15 is usually loosened and passed over, there is a possibility that the upper body behavior of the occupant may not be stable only with the seat belt 15.

  Thus, in the occupant protection device, it 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 incorporating an inflator, an armrest airbag 22 that is deployed from the airbag main body 21, and a lid 23.
The airbag body 21 is built in the armrest 5.
The lid 23 is provided at a position below the airbag body 21 on the lower surface of the armrest 5. The lid 23 has its rear end lowered when the airbag is deployed, and is half open rearward at a predetermined angle.
The armrest airbag 22 is deployed rearward and inward from between the lower surface of the armrest 5 and the lid 23 that is half-opened.
The right armrest airbag 22 is deployed to the left of the right armrest 5 in the left-right direction. As a result, the rear end surface of the deployed right armrest airbag 22 hits the right end of the front surface of the lumbar region of the occupant seated on the seat on the inner left side of the right armrest 5. The right armrest airbag 22 is deployed so as to be sandwiched between the lid 23 of the right armrest 5 and the right waist end of the occupant, and presses the occupant's right waist end from the front side in a state where high resistance can be exerted. .
The left armrest airbag 22 is deployed to the right of the left armrest 5 in the left-right direction. As a result, the rear end surface of the deployed left armrest airbag 22 hits the left end portion of the front surface of the lumbar region of the occupant seated on the seat, on the right inner side of the left armrest 5. The left armrest airbag 22 is deployed so as to be sandwiched between the lid 23 of the left armrest 5 and the left waist end of the occupant, and presses the left waist end of the occupant from the front side in a state where high resistance can be exerted. .
As a result, the armrest airbag 22 deployed on the left and right sides can hold both the left and right waists from the front, excluding the central part of the waist of the occupant seated on the seat 4.

  When detecting or predicting a collision of the automobile 1, the control unit 19 activates the seat belt device 14, the front airbag device 16, and the armrest airbag device 20.

For example, the control unit 19 predicts a collision of the automobile 1 based on the captured image of the imaging sensor 11.
And the control part 19 operates the seatbelt apparatus 14 in the timing measured by the timer 13, when the collision of the motor vehicle 1 is estimated. 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. As a result, the occupant seated on the seat 4 is unlikely to deviate greatly from the seating position of the seat 4.

Thereafter, the control unit 19 determines the collision of the automobile 1 based on the collision detection of the collision sensor 12.
And the control part 19 operates a pair of armrest airbag apparatus 20 and the front airbag apparatus 16 in the timing measured by the timer 13, when the collision of the motor vehicle 1 is detected.

FIG. 7 is an explanatory diagram of a procedure for deploying the armrest airbag 22.
In the armrest airbag device 20, first, the lid 23 opens rearward as shown in FIG. 7B from the state before deployment shown in FIG.
Next, the armrest airbag device 20 ignites the inflator and starts to deploy the armrest airbag 22 with the high-pressure gas.
As shown in FIG. 7C, the armrest airbag 22 starts to be deployed rearward and inward from between the lower surface of the armrest 5 and the lid 23 that is half-opened.
Thereafter, as shown in FIG. 7D, the armrest airbag 22 is deployed so as to hold down the waist of the occupant seated on the seat 4 from the front.
The armrest airbag 22 on the right side and the armrest airbag 22 on the left side are deployed symmetrically to hold the left and right waists of the occupant seated on the seat 4 from the front.
Thereby, even when a strong impact acts on the occupant, the occupant's waist can be maintained at the seating position of the seat 4 with high resistance.

The front airbag device 16 ignites the inflator and deploys the front airbag 18 with high-pressure gas. As shown in FIG. 6, the front airbag 18 is widely deployed from the front to the rear.
Therefore, the upper body of the occupant falls forward and falls into the front airbag 18 while the waist is maintained at the seating position of the seat 4. The front airbag 18 can absorb a shock suitably while supporting a state of being collapsed in a desired state.

As described above, in the present embodiment, the armrest airbag 22 is deployed from the armrest 5 and the lumbar part of the occupant seated on the seat 4 is pressed from the front.
Therefore, the waist part tends to stay at the position where it is seated on the seat 4 and is difficult to shift forward.
In particular, since the armrest airbag 22 is deployed from the armrest 5 on the seat 4 side, the waist portion can be immediately pressed at a short deployment distance, and the armrest airbag 22 can be accurately suppressed before the waist portion is greatly displaced. Even when the waist has already started to move forward, the movement can be suppressed by pressing the movement from the front.
As a result, the upper body that falls forward about the waist is easily rotated forward around the waist that remains at the seating position of the seat 4. The upper body that has fallen forward falls into the front airbag 18 in a desired state, and the front airbag 18 can absorb the impact acting on the occupant.

In the present embodiment, the armrest 5 and the armrest airbag device 20 are provided as a pair on the left and right sides of the seat 4, and the armrest airbag 22 that is deployed on both the left and right sides excludes the central portion of the lumbar portion of the occupant seated on the seat 4. Hold the left and right hips from the front.
Therefore, the lumbar part can be firmly pressed from the front without strongly pressing the abdominal part of the center part of the lumbar part of the occupant seated on the seat 4.

In the present embodiment, the armrest 5 has a lid 23 that is half-opened rearward, and the armrest airbag 22 is deployed rearward from the lid 23, and is formed between the half-open lid 23 and the waist of the occupant seated on the seat 4. Expand in between.
Therefore, the deployment direction of the armrest airbag 22 can be regulated backward by the half-open lid 23 provided on the armrest 5.
Further, the half-open lid 23 provided on the armrest 5 can support the deployed armrest airbag 22 from the front, and can exert a high reaction force on the waist that is to move forward.

[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. 8 is an explanatory diagram of a deployment procedure of the armrest airbag device 20 and the armrest airbag 22 according to the second embodiment. Although only the armrest airbag device 20 provided on the left armrest 5 is illustrated in FIG. 8, the same armrest airbag device 20 is also provided on the right armrest 5.

As shown in FIG. 8A, the airbag device 20 includes an airbag main body 21 containing an inflator, an armrest airbag 22 that is deployed from the airbag main body 21, and a tether 24.
The tether 24 connects the position of the rear portion on the rear side of the airbag main body 21 with respect to the armrest 5 and the tip portion of the armrest airbag 22.

In the armrest airbag device 20, when the control unit 19 detects a collision in the state before deployment shown in FIG. 8A, the inflator is ignited and the deployment of the armrest airbag 22 is started by the high-pressure gas.
Thereby, as shown in FIG. 8B, the armrest airbag 22 starts to be deployed inward from the inner side surface of the armrest 5 in the left-right direction.
Thereafter, as shown in FIG. 8C, the armrest airbag 22 is inflated while being pulled by the tether 24 so as not to leave the armrest 5.
As a result, the distal end portion of the armrest airbag 22 is deployed rearward so that the occupant seated on the seat 4 is pressed from the front.
The armrest airbag 22 on the right side and the armrest airbag 22 on the left side are deployed symmetrically to hold the left and right waists of the occupant seated on the seat 4 from the front.
Thereby, even when a strong impact acts on the occupant, the occupant's waist can be maintained at the seating position of the seat 4 with high resistance.

As described above, in the present embodiment, the armrest airbag 22 and the rear portion of the armrest 5 are connected to each other, and the armrest airbag 22 is pulled by the tether 24 by being deployed inward from the armrest 5. Then, it expands backward toward the waist of the occupant seated on the seat 4.
Therefore, the deployment direction of the armrest airbag 22 can be changed backward by the tether 24.
Further, the deployed armrest airbag 22 can be maintained in a state of extending in the front-rear direction by the tether 24, and can be pressed from the front side with a strong reaction force against the waist that is to move 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. 9 is an explanatory diagram of a deployment procedure of the armrest airbag device 20 and the armrest airbag 22 according to the third embodiment. Although FIG. 9 shows only the armrest airbag device 20 provided on the left armrest 5, the same armrest airbag device 20 is also provided on the right armrest 5.

As shown in FIG. 9A, the airbag device 20 includes an airbag main body 21 containing an inflator, an armrest airbag 22 that is deployed from the airbag main body 21, and an actuator 25.
The actuator 25 moves the armrest 5 containing the airbag main body 21 backward.

In the armrest airbag device 20, when the control unit 19 detects a collision in the state before deployment shown in FIG. 9A, the inflator is ignited and the deployment of the armrest airbag 22 is started by the high-pressure gas.
As a result, the armrest airbag 22 is deployed inward from the inner side surface of the armrest 5 as shown in FIG. 9B.
Further, after starting to deploy the armrest airbag 22 from the armrest 5, the armrest airbag 22 operates the actuator 25 to move the armrest 5 backward as shown in FIG. 8C.
As a result, the armrest airbag 22 can hold the occupant's lower back seated on the seat 4 from the front.
The armrest airbag 22 on the right side and the armrest airbag 22 on the left side are deployed symmetrically to hold the left and right waists of the occupant seated on the seat 4 from the front.
Thereby, even when a strong impact acts on the occupant, the occupant's waist can be maintained at the seating position of the seat 4 with high resistance.

As described above, in the present embodiment, the armrest 5 is moved rearward by the actuator 25 after the armrest airbag 22 starts to be deployed from the armrest 5.
Therefore, the armrest airbag 22 deployed inward from the armrest 5 lowered to the rear can hold the waist of the occupant seated on the seat 4 from the front.
Further, the retracted armrest airbag 22 can press the waist portion to move forward with a high reaction force.

[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. 10 is an explanatory diagram of a deployment procedure of the armrest airbag device 20 and the armrest airbag 22 according to the fourth embodiment.
In FIG. 10, substantially L-shaped armrests 5 are provided on the left and right sides of the seat 4.
The substantially L-shaped armrest 5 includes a front-rear extending part 6 extending in the front-rear direction on the seat 4 side, and a left-right extending part extending inward from the front-rear extending part 6 toward the seat 4. 7.

As shown in FIG. 10 (A), the armrest airbag device 20 includes an airbag body 21 containing an inflator and an armrest airbag 22 that is deployed from the airbag body 21.
The airbag body 21 is built in the left and right extending part 7.

In the armrest airbag device 20, when the control unit 19 detects a collision in the state before deployment illustrated in FIG. 10A, the inflator is ignited and deployment of the armrest airbag 22 is started with high-pressure gas.
Thereby, the armrest airbag 22 is deployed rearward from the rear surface of the left and right extending portion 7 as shown in FIG.
As a result, the armrest airbag 22 can hold the occupant's lower back seated on the seat 4 from the front.
The armrest airbag 22 on the right side and the armrest airbag 22 on the left side are deployed symmetrically to hold the left and right waists of the occupant seated on the seat 4 from the front.
Thereby, even when a strong impact acts on the occupant, the occupant's waist can be maintained at the seating position of the seat 4 with high resistance.

As described above, in the present embodiment, the armrest airbag 22 is deployed rearward from the left and right extending portions 7 extending inward with respect to the armrest 5 toward the waist of the occupant seated on the seat 4.
Therefore, the deployed armrest airbag 22 can hold the waist from the front.
Further, the armrest airbag 22 deployed rearward from the left and right extending part 7 can hold the waist part to be moved forward by a reaction force.

[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. 11 is an explanatory view showing a state in which the armrest airbag device 20 according to the fifth embodiment is deployed.
The armrest airbag device 20 includes an airbag main body 21 incorporating an inflator, an armrest airbag 22 that is deployed from the airbag main body 21, and a lid 23.
An upper convex portion 26 that protrudes upward is formed on the upper surface of the deployment tip of the armrest airbag 22.

Thus, the armrest airbag 22 has the upper convex part 26 which protrudes upward from a deployment | deployment front-end | tip part.
Therefore, the upper convex part 26 can be arrange | positioned in front of the upper body in the state in which the armrest airbag 22 is contacting the waist | hip | lumbar part. The upper convex portion 26 can suppress the upper body from tilting forward around the waist.

[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. 12 is an explanatory view showing a state in which the armrest airbag device 20 according to the sixth embodiment is deployed.
The armrest airbag device 20 includes an airbag main body 21 incorporating an inflator, an armrest airbag 22 that is deployed from the airbag main body 21, and a lid 23.
And the armrest airbag 22 has the waist convex part 27 which protrudes back from a deployment front-end | tip part.
Therefore, when the armrest airbag 22 hits the waist, the waist convex portion 27 hits the front of the waist.
Further, as shown in FIG. 12, the waist convex portion 27 hits the front surface of the waist portion at a portion corresponding to both the left and right waist portions excluding the central portion of the waist portion of the occupant seated on the seat 4.

As described above, in the present embodiment, the armrest airbag 22 has the left and right waist portions formed by the waist convex portions 27 provided at the portions corresponding to the left and right waist portions excluding the center portion of the waist portion of the occupant seated on the seat 4. Hold from the front.
Therefore, the waist can be firmly pressed from the front without strongly pressing the abdomen at the center of the waist of the occupant seated on the seat 4.

  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.

DESCRIPTION OF SYMBOLS 1 ... Automobile (vehicle), 2 ... Vehicle body, 3 ... Passenger room, 4 ... Seat, 5 ... Armrest, 6 ... Front-back extension part, 7 ... Left-right extension part, 10 ... Passenger protection apparatus, 11 ... Imaging sensor, 12 DESCRIPTION OF SYMBOLS ... Collision sensor, 13 ... Timer, 14 ... Seat belt device, 15 ... Seat belt, 16 ... Front airbag device, 17 ... Air bag body, 18 ... Front airbag, 19 ... Control part, 20 ... Armrest airbag device, 21 ... Airbag body, 22 ... Armrest airbag,
23 ... Lid, 24 ... Tether, 25 ... Actuator, 26 ... Upper convex part, 27 ... Lumbar convex part.

Claims (8)

An armrest provided on the seat side of the vehicle and capable of placing an arm portion of an occupant seated on the seat;
An armrest airbag device that is provided on the armrest and deploys an armrest airbag from the armrest;
A control unit that deploys the armrest airbag when a collision of the vehicle is detected or predicted;
Have
The armrest airbag deployed from the armrest presses the lumbar part of the occupant seated on the seat from the front.
Vehicle occupant protection device. The armrest and the armrest airbag device are provided in a pair on the left and right sides of the seat,
The armrest airbag that is deployed on both the left and right sides holds both the left and right waists from the front, excluding the central part of the waist of the occupant seated on the seat,
The vehicle occupant protection device according to claim 1. The armrest has a lid that opens halfway backwards,
The armrest airbag is deployed rearward from the lid and is deployed between the half-open lid and the waist of an occupant seated on the seat.
The vehicle occupant protection device according to claim 1 or 2. The armrest airbag device has a tether that connects the armrest airbag and a rear portion of the armrest;
The armrest airbag is pulled by the tether by deploying inward from the armrest, and deployed rearward toward the occupant's waist seated on the seat,
The vehicle occupant protection device according to claim 1 or 2. An actuator for moving the armrest to the rear;
The control unit, after starting to deploy the armrest airbag from the armrest, to move the armrest rearward by the actuator,
The vehicle occupant protection device according to claim 1 or 2. The armrest has a front-rear extension part extending in the front-rear direction on the seat side, and a left-right extension part extending inward from the front-rear extension part toward the top of the seat,
The armrest airbag is deployed rearward from the left and right extension part toward the waist of the occupant seated on the seat.
The vehicle occupant protection device according to claim 1 or 2. The armrest airbag has an upward convex portion that protrudes upward from the deployment tip.
The vehicle occupant protection device according to any one of claims 1 to 6. The armrest airbag has waist convex portions on portions corresponding to the left and right waist portions excluding the central portion of the waist portion of the occupant seated on the seat, and the left and right waist portions are pressed from the front by the waist convex portion,
The vehicle occupant protection device according to any one of claims 1 to 7.