JP2017178151A - Occupant protection device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To respond to a plurality of collision patterns while suppressing an increase in the number of air bags.SOLUTION: An occupant protection device of an automobile 1 includes: a seat 5 on which an occupant on the automobile 1 is seated; and a pair of right and left shoulder air bag devices 101 which have a pair of right and left shoulder air bags 102 which are curved or bent and are deployed so as to pass near right and left sides of a head part from a rear side of the occupant seated on the seat 5 and come around a front side of an upper body. The pair of right and left air bags are overlapped mutually on the front side of the upper body of the occupant.SELECTED DRAWING: Figure 3

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 during a collision.
The airbag apparatus includes a front airbag that is deployed rearward from the front side of the occupant as disclosed in Patent Document 1. The front airbag is deployed when the vehicle collides from the front, for example, and receives and supports an occupant trying to move forward in the event of a front collision.
Moreover, there exists a curtain airbag which expand | deploys in the front-back direction along the vehicle side surface inside like patent document 2. FIG. The curtain airbag is deployed, for example, when there is a collision from the side of the vehicle, and receives and supports an occupant trying to move outward in the vehicle width direction at the time of the side collision.
In addition, there is a side airbag that is deployed between the inner side of the vehicle side surface and the occupant below the curtain airbag. The side airbag, together with the curtain airbag, receives and supports an occupant who intends to move outward in the vehicle width direction in the event of a side collision.

JP2013-014176A Japanese Patent Laid-Open No. 2015-0667123

  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 approximately proportionally according to the number of collision modes to be dealt with.

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

  The vehicle occupant protection device according to the present invention is curved so that a seat on which an occupant seated in the vehicle is seated and the occupant seated on the seat pass from the upper rear of the occupant to near the left and right of the head and wrap around the front of the upper body. Or a pair of left and right shoulder airbag devices having a pair of left and right shoulder airbags that are bent and deployed, and the pair of left and right shoulder airbags overlap each other on the front side of the upper body of the occupant.

  Preferably, the left shoulder airbag and the right shoulder airbag are deployed obliquely downward on the front side of the occupant's upper body, intersect at each central portion, and engage with the intersecting portion. A structure or rubbing surface may be formed.

  Preferably, each of the left and right shoulder airbags has a leading edge which is a lower edge on the front side of the upper body and is formed wide in the vehicle width direction, and the leading edge is in contact with a thigh of an occupant seated on the seat or a knee. It is good to be located near the top and overlap each other on the front side of the upper body of the occupant in this state.

  Preferably, the shoulder airbag closer to the upper body in the crossed state is formed with a submandibular protrusion projecting between the left and right shoulder airbags on the proximal end side from the intersecting portion. Good.

In the present invention, the pair of left and right shoulder airbag devices are curved or bent so as to pass from the rear upper side of the occupant seated on the seat to the left and right of the head and to wrap around the front side of the upper body. The pair of left and right shoulder airbags overlap each other on the front side of the occupant's upper body. The upper body of the occupant can be restrained so as to be wrapped from the rear side to the front side. Therefore, the upper body of the occupant who intends to move away from the seat in the event of a collision is restrained by the pair of left and right shoulder airbags that overlap each other on the front side of the upper body, and is difficult to move further. This makes it difficult for the occupant's upper body to move in a plurality of collision modes such as a frontal collision and a side collision. Moreover, it can suppress effectively that a passenger | crew's upper body is twisted right and left.
Moreover, in the present invention, since the pair of left and right shoulder airbags are deployed from above so as to pass near the left and right of the head of the occupant, the pair of left and right shoulder airbags interfere with other airbags during deployment. It is hard to do.

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 a passenger protection state by various airbag devices. FIG. 3 is an explanatory diagram of an occupant protection state by the shoulder airbag device of the present embodiment. FIG. 4 is an explanatory diagram of detailed shapes of the right shoulder airbag and the left shoulder airbag of FIG. FIG. 5 is a block diagram of a control system of the shoulder airbag apparatus of FIG. FIG. 6 is an explanatory diagram of an operation example of the shoulder airbag device of FIG. 3. FIG. 7 is an explanatory view of a modified example of the right shoulder airbag and the left shoulder airbag.

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

  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 also shows another vehicle that runs in front of the vehicle 1.

  An automobile 1 in FIG. 1 has a vehicle body including a front chamber 2, a passenger compartment 3, and a rear chamber 4. In the front chamber 2, a power unit such as an engine and an electric motor is arranged. A luggage space is provided in the rear chamber 4. The passenger compartment 3 is provided with a seat 5 on which an occupant is seated. In the passenger compartment 3, operating members such as an accelerator pedal, a brake pedal, and a handle are provided in front of the driver's seat 5. The automobile 1 travels, stops, and turns left and right based on the driver's operation.

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

FIG. 2A illustrates a front airbag device 11 that deploys the front airbag 12 from the front of the occupant seated on the seat 5 toward the occupant. The front airbag device 11 includes an inflator, an undeployed front airbag 12, and a main body 13 that accommodates these. The main body 13 is disposed on a dashboard or a handle, for example. When the inflator is ignited, the front airbag 12 is deployed rearward. By deploying the front airbag 12 in front of the occupant seated on the seat 5, it is possible to receive and support the occupant who moves forward in the event of a collision from the front side, for example.
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 the front-rear direction below the curtain airbag 17. A side airbag device 21 for deploying the side airbag 22 is shown. The main body 18 of the curtain airbag device 16 is disposed on a roof rail, for example. 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 disposed, for example, on the outer portion of the back portion of the seat 5. The side airbag device 21 deploys the side airbag 22 from the outer portion of the back portion of the seat 5 toward the front. The curtain airbag 17 and the side airbag 22 are deployed on the outer side in the vehicle width direction of the occupant seated on the seat 5, for example, to catch the occupant trying to move outward in the vehicle width direction in the event of a collision from the side. , Can secure a space between the occupant and the door.
FIG. 2C shows a front airbag device 11 and a 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, thereby catching the occupant who is going to move diagonally forward in the event of a collision from diagonally forward, for example. Can be supported.
Thus, the automobile 1 is provided with a plurality of airbags in order to cope with a plurality of collision modes. The number of airbags increases approximately proportionally according to the number of collision modes to be dealt with. As collision safety standards are strengthened or reviewed in the future, it will be necessary to provide more airbags.
Therefore, 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 shoulder airbag device 101 of the present embodiment. 3A is a side view, FIG. 3B is a front view, and FIG. 3C is a top view.

The shoulder airbag apparatus 101 of FIG. 3 has a right airbag apparatus and a left airbag apparatus. A pair of left and right passengers seated on the seat 5 are provided.
FIG. 4 is an explanatory diagram of the detailed shapes of the right shoulder airbag 102 and the left shoulder airbag 102 of FIG.

The right airbag device includes a right shoulder airbag 102 and a right main body 103 that accommodates the inflator.
The main body 103 of the right airbag device is disposed on the right side of the headrest of the seat 5, for example. The main body 103 may be disposed on the right side portion of the back portion of the seat 5. Here, the right side is the inside in the vehicle width direction.
The right shoulder airbag 102 has a deployment shape curved in a substantially L shape. The right shoulder airbag 102 is deployed from the main body 103 toward the front, and is deployed in a posture in which the substantially L-shape is on the lower side. As a result, the right shoulder airbag 102 is deployed in a curved or bent manner so as to pass from the rear upper side of the occupant seated on the seat 5 to the right side of the head and wrap around the front of the upper body. Note that the curve may be a more gentle and straight shape.

The left airbag device includes a left shoulder airbag 102 and a left main body 103 that accommodates the inflator. Here, the left side is the outside in the vehicle width direction.
The main body 103 of the left airbag device is disposed, for example, on the left side portion of the headrest of the seat 5. The main body 103 may be disposed on the left side portion of the back portion of the seat 5.
The shape and deployed state of the left shoulder airbag 102 are the same as those on the right side, and a description thereof is omitted.

The pair of left and right shoulder airbags 102 overlap each other on the front side of the upper body of the occupant. The left shoulder airbag 102 and the right shoulder airbag 102 are deployed obliquely downward on the front side of the upper body of the occupant and intersect at each central portion. As shown in FIG. 4, a front concave portion 104 is formed in the right shoulder airbag 102 that is below the intersection and close to the upper body. Further, a rear recess 105 is formed in the left shoulder airbag 102 on the side above the intersection and away from the upper body. As shown in FIG. 3, the front recess 104 and the rear recess 105 overlap each other at the intersection. Thereby, the left shoulder airbag 102 on the side away from the upper body can also approach the front surface of the upper body in the same manner as the right shoulder airbag 102. Further, the left shoulder airbag 102 and the right shoulder airbag 102 can be engaged with each other.
Note that the front recess 104 and the rear recess 105 that are in direct contact may be subjected to anti-slip processing by applying a non-slip material or the like.

  FIG. 5 is a block diagram of a control system of the airbag apparatus of FIG.

  5 includes an imaging device 51, an acceleration sensor 52, a speed sensor 53, a brake operation sensor 54, an angular velocity sensor 55, a belt tension sensor 56, a belt winding amount sensor 57, a seating sensor 58, a timer 59, and these. A control unit 60 connected thereto; FIG. 5 also shows a seat belt device and an airbag device that are controlled objects connected to the control unit 60. The airbag device here includes a shoulder airbag device 101.

  The imaging device 51 is, for example, a pair of imaging elements, and is provided forward on the roof or windshield of the passenger compartment 3 as shown in the figure, and observes the surrounding situation in front of the automobile 1 by imaging. The control unit 60 can identify an obstacle such as another automobile in front of the automobile 1 as the surrounding situation of the automobile 1 from the captured image, and can determine the possibility of the collision of the obstacle. Thereby, the driving | running | working condition of the motor vehicle 1 before a collision can be detected.

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

  The speed sensor 53 is fixed to the vehicle body and detects the speed of the automobile 1 as the traveling state of the automobile 1.

  The brake operation sensor 54 is provided in the passenger compartment 3 and detects the depression operation of the 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 fixed to the vehicle body and detects the speed of the automobile 1 as the traveling state of the automobile 1.

  The belt tension sensor 56 is provided, for example, in the retractor device, and detects the tension acting on the strap. Accordingly, it is possible to detect the movement of the occupant's body that moves relatively forward during the 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, for example, in the 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 the seating of the occupant on the seat 5 and the seating position.

  The timer 59 measures time.

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

  FIG. 6 is an explanatory diagram of an operation example of the shoulder airbag device 101 of FIG.

As shown in FIG. 6A, the occupant is seated on the seat 5 before the collision.
For example, the control unit 60 periodically predicts the possibility of a collision based on the image of the imaging device 51. When there is a possibility of collision, the control unit 60 activates the seat belt device and attracts the upper body of the occupant to the seat 5.
Thereafter, the control unit 60 detects a collision based on the detection value of the acceleration sensor 52, for example. And when a collision is detected, the control part 60 operates an airbag apparatus.

The shoulder airbag device 101 in FIG. 3 deploys the right shoulder airbag 102 and the left shoulder airbag 102.
The shoulder airbag device 101 first deploys the right shoulder airbag 102 as shown in FIG. The right shoulder airbag 102 is deployed from the right main body 103 of the headrest toward the front, and is deployed in a posture in which the substantially L shape is on the lower side. As a result, the right shoulder airbag 102 is deployed in a curved or bent manner so as to pass from the rear upper side of the occupant seated on the seat 5 to the right side of the head and wrap around the front of the upper body. The front recess 104 is located in the central part of the occupant's chest.
Next, as shown in FIG. 6B, the left shoulder airbag 102 is deployed. The left shoulder airbag 102 is deployed forward from the main body 103 on the left side of the headrest, and is deployed in a posture in which the substantially L shape is on the lower side. As a result, the left shoulder airbag 102 is deployed in a curved or bent manner so as to pass from the rear side of the occupant seated on the seat 5 to the left side of the head and wrap around the front side of the upper body. The rear recess 105 engages with the front recess 104 at the center of the occupant's chest.
In this manner, the pair of left and right shoulder airbags 102 are engaged with each other on the front side of the upper body of the occupant. A pair of left and right shoulder airbags 102 engaged with each other are arranged around the left and right collarbones and the side of the jaw of the occupant.

As described above, in the present embodiment, the pair of left and right shoulder airbags 102 are bent or bent so as to pass from the rear side of the occupant seated on the seat 5 to the front side of the upper body through the vicinity of the left and right sides of the head. And overlap each other on the front side of the upper body of the occupant. The upper body of the occupant can be restrained so as to be wrapped from the rear side to the front side. Therefore, the upper body of the occupant who intends to move away from the seat 5 in the event of a collision is restrained by the pair of left and right shoulder airbags 102 that overlap each other on the front side of the upper body, and is difficult to move further. This makes it difficult for the occupant's upper body to move in a plurality of collision modes such as a frontal collision and a side collision. Moreover, it can suppress effectively that a passenger | crew's upper body is twisted right and left.
In addition, in the present embodiment, the pair of left and right shoulder airbags 102 are deployed from above so as to pass near the left and right of the head of the occupant, so that when the pair of left and right shoulder airbags 102 are deployed, Hard to interfere with the bag.

  In the present embodiment, the left and right shoulder airbags 102 intersect with each other at the front side of the occupant's upper body, and an engagement structure or a frictional surface is formed at the intersection. Therefore, the left and right shoulder airbags 102 are loosely connected at the intersection, and can restrain and restrain the movement of the occupant more reliably.

  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.

  FIG. 7 is an explanatory diagram of a modified example of the right shoulder airbag 102 and the left shoulder airbag 102.

In FIG. 7A, the right shoulder airbag 102, which is closer to the upper body in the crossed state, has a submandibular projection that protrudes between the left and right shoulder airbags 102 on the proximal end side from the crossed portion. 106 is formed.
By forming the submandibular protrusion 106 in this manner, even if the occupant's head tries to move downward, the movement can be suppressed by the submandibular protrusion 106. In addition, since the left and right shoulder airbags 102 pass near the left and right sides of the head, the airbag can be arranged around the entire head, so that high protection is also provided for movement of the head other than below. Performance can be demonstrated.

7B, the left and right shoulder airbags 102 each have a leading edge which is a lower edge on the front side of the upper body and is formed wide in the vehicle width direction, and the leading edge is near the knee above the occupant seated on the seat 5. In this state, they overlap each other on the front side of the upper body of the occupant.
In this way, the front edge of each left and right shoulder airbag 102 is formed wide in the vehicle width direction, and the front edge is located near the lap of the occupant seated on the seat 5, so that each left and right shoulder airbag 102 When an occupant's load acts downward on 102, part of the load can be released by the contact between the tip edge and the thigh that are in contact with each other. Therefore, even if a larger load is applied, the left and right shoulder airbags 102 can be easily overlapped to maintain the upper body, and the performance can be exhibited.
It should be noted that the leading edges of the left and right shoulder airbags 102 may be in contact with the thighs of the occupants seated on the seat 5.

1 ... Automobile (vehicle)
2 ... Front room 3 ... Passenger room 4 ... Rear room 5 ... Seat 11 ... Front airbag device 12 ... Front airbag 13 ... Body 16 ... Curtain airbag device 17 ... Curtain airbag 18 ... Body 21 ... Side airbag device 22 ... Side airbag 23 ... Body 51 ... Imaging device 52 ... Acceleration sensor 53 ... Speed sensor 54 ... Brake operation sensor 55 ... Angular speed sensor 56 ... Belt tension sensor 57 ... Belt take-up sensor 58 ... Seat sensor 59 ... Timer 60 ... Control Part 101 ... Shoulder airbag device 102 ... Shoulder airbag 103 ... Main body 104 ... Front side recess 105 ... Rear side recess 106 ... Submandibular protrusion

Claims (4)

A seat on which an occupant in the vehicle sits;
A pair of left and right shoulder airbag devices having a pair of left and right shoulder airbags that are bent or bent so as to pass from the rear upper side of the occupant seated on the seat to the front side of the upper body through the vicinity of the left and right of the head. When,
Have
The pair of left and right shoulder airbags overlap each other on the front side of the upper body of the occupant,
Vehicle occupant protection device. Preferably, the left shoulder airbag and the right shoulder airbag are deployed obliquely downward on the front side of the occupant's upper body, intersect at each central portion, and engage with the intersecting portion. A structure or rubbing surface is formed,
The vehicle occupant protection device according to claim 1. Each of the left and right shoulder airbags has a leading edge that is a lower edge on the front side of the upper body, and the leading edge is in contact with the occupant's thigh seated on the seat or near the knee. In this state, they overlap each other on the front side of the upper body of the occupant,
The vehicle occupant protection device according to claim 1. The shoulder airbag closer to the upper body in the crossed state is formed with a submandibular protrusion projecting between the left and right shoulder airbags on the proximal end side from the intersecting portion.
The vehicle occupant protection device according to any one of claims 1 to 3.

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