JPH106902A - Occupant protection device - Google Patents

Abstract

(57) [Problem] To provide an occupant protection device using an airbag that does not cause a secondary injury to the occupant due to a large acceleration when the airbag is opened. The means (secured belt 100 in the figure) for securing an occupant in a vehicle seat against an impact such as a collision is provided at least at one position including a position corresponding to the front surface of the occupant's body, for example, a chest. The bag 101 is attached. When the airbag 101 is opened, the impact of opening the airbag indirectly reaches the head 200 via the window glass 401 and the handle 300, so that a secondary injury to the occupant can be avoided, and Being open near the body also reduces injury from vehicle components and debris.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention prevents an occupant from being damaged by hitting a vehicle component such as a window glass or a steering wheel or hitting a fragment of a structure when the vehicle collides. Occupant protection device for a vehicle.

[0002]

2. Description of the Related Art One of the safety measures required to be attached to an automobile is an occupant protection device in the event of a collision. As a conventional occupant protection device, only the seat belt is regulated, but recently, the use of airbags has become widespread, and further automobile safety is required. Have been.

The current airbag system will be described with reference to FIG. FIG. 4 is a conceptual diagram showing a state where the airbag 31 is opened. At present, in a generally used airbag system, an airbag 31 is mounted at the center of a handle 30 as shown in FIG. The operating state of the airbag 31 is inflated from the handle 31 toward the human body as shown in FIG. In this manner, the method in which the airbag 31 is opened from the handle 30 is because the head 20 of the occupant is released forward due to the impact generated by the collision,
This is to prevent the head 20 from hitting the window glass 41 or the handle 30 on the front of the automobile 40.

[0004]

A dummy doll is often used as a simulator in the event of a collision of a car. However, a problem with the current airbag system is that each part of the human body, especially the head, in a collision using the dummy doll, It is thought that it is based on the development of the movement. FIG. 5 shows the impact (indicated by the acceleration in the figure) and the head displacement of the dummy doll on the head 20 before and after the air bag 31 shown in FIG. 3 shows an impact on the head 20 and a displacement of the head. According to this, the head 20 is rapidly returned to the original position by opening the airbag 31, and the head 20 of the dummy doll is prevented from hitting the window glass 41 and the handle 30. However, a large acceleration is applied to the head 20 in the direction opposite to the direction at the time of the collision.

[0005] Furthermore, this situation is a situation in the case of a dummy doll having no conditional reflection. In the case of a living person, the brake is depressed by the conditional reflection immediately before the collision, and furthermore,
Various situations occur, such as maintaining a certain distance between the head 20 and the handle 30 by pushing the handle. Therefore, depending on the situation, the situation may be more severe than that of the dummy doll. In such a situation, the airbag does not cancel the large impact caused by the collision of the car, but the shock of the large acceleration in the opposite direction generated by the airbag 31 that opens rapidly causes the eardrum to break or whiplash. There is a problem that a secondary injury due to the airbag may occur.

[0006] It is an object of the present invention to provide an occupant protection device which eliminates the possibility of occurrence of a secondary injury due to the above-mentioned airbag and which can ensure occupant safety more reliably.

[0007]

In order to solve the above-mentioned problems, in the present invention, the means for securing the occupant to the seat of the vehicle in response to an impact such as a collision corresponds to the front of the body of the occupant. The airbag is attached to at least one position including the position. In this case, since the position of the airbag is close to the occupant's body, a large acceleration when the airbag is opened does not work at an angle nearly perpendicular to the occupant's head. Injuries can be avoided. In addition, since the vehicle is opened at a position close to the occupant's body, the occupant can be reliably protected from components of the vehicle and its debris.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to prevent a large acceleration when an airbag is opened from exerting an excessive impact on an occupant's head, the present invention places an occupant on an automobile seat against an impact such as a collision. The airbag is attached to at least one portion of the securing means including a position corresponding to the front surface of the occupant's torso.

An embodiment will be described below. [First Embodiment] A first embodiment of an occupant protection system according to the present invention will be described with reference to FIGS. FIG. 1 is a conceptual diagram showing a state in which an airbag 101 of an occupant protection device according to the present invention is opened, and FIG.
The impact (indicated by acceleration in the figure) and head displacement on the dummy doll head 200 before and after the opening of 101, and the impact and head displacement on the head 200 without an airbag FIGS. 1 and 2 correspond to FIGS. 4 and 5 in the description of the prior art.

Means for securing an occupant in an automobile seat against impact such as a collision (hereinafter referred to as occupant securing means)
An airbag 101 is mounted at a position corresponding to the occupant's chest portion of the seat belt 100 as a vehicle. Since a collision signal is generated and the airbag 101 is opened from the occupant's chest, the airbag 101 comes into contact with the window glass 401 and the steering wheel 300 to generate a reaction force on the occupant. In addition, the head 200 of the occupant is impacted indirectly as shown in the figure,
The impact on the occupant's head 200 is greatly reduced as shown in FIG. 2, and the displacement of the head slowly returns to its original position.

[Second Embodiment] FIGS. 3A and 3B show a second embodiment of an occupant protection system according to the present invention. FIG. 3A is a conceptual diagram viewed from the side, and FIG. It is a conceptual diagram. The occupant securing means 110 in this embodiment is configured with a rigid body provided in a racing car or the like as a core, and after the occupant sits down, lowers from the top and securely holds the occupant's shoulders and chest. I do. This crew securing means
An airbag 111 is mounted at a position corresponding to the chest of 110 occupants. The operation is the same as that of the first embodiment, and the description is omitted.

Since the occupant securing means 110 is made of a rigid body, the moving distance of the occupant's body during a collision or the like can be minimized, and the occupant can be protected more reliably. In the above embodiment, the airbag is mounted at a position corresponding to the chest of the occupant. Such injuries can be more reliably avoided.

[0013]

According to the present invention, the airbag is mounted on the occupant securing means at least at a position corresponding to the front portion of the occupant's torso. Since it does not extend, secondary injury due to the airbag can be avoided. In addition, since the vehicle is opened at a position close to the occupant's body, the occupant can be reliably protected from components of the vehicle and its debris.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a first embodiment of an occupant protection device according to the present invention.

FIG. 2 is a diagram showing an impact on the head and a head displacement of the dummy doll according to the first embodiment.

3A and 3B show the concept of a second embodiment of an occupant protection device according to the present invention, wherein FIG. 3A is a side view and FIG. 3B is a front view.

FIG. 4 is a conceptual diagram showing an example of a conventional occupant protection device.

FIG. 5 is a diagram showing the impact on the head of a dummy doll and the head displacement according to a conventional example.

[Explanation of symbols]

 10, 100 Seat belt 110 Means for securing occupants 20, 200 Head 30, 300 Handle 40, 400 Automobile 41, 401 Window glass 31, 101, 111 Airbag

Claims (2)

[Claims] An airbag is mounted on at least one portion of a means for securing an occupant in a vehicle seat against an impact such as a collision, including a position corresponding to a front surface of an occupant's torso. Occupant protection device. 2. The occupant protection device according to claim 1, wherein the means for securing the occupant in the seat of the automobile is a seat belt.