CN212950498U

CN212950498U - Overhead safety airbag suitable for protecting main driver and passengers

Info

Publication number: CN212950498U
Application number: CN202020421423.1U
Authority: CN
Inventors: 李军; 蒋成约; 李晨; 孟祥志; 王越; 宋赛飞; 黄全旺
Original assignee: Chongqing University of Technology
Current assignee: Chongqing University of Technology
Priority date: 2020-03-28
Filing date: 2020-03-28
Publication date: 2021-04-13
Anticipated expiration: 2030-03-28

Abstract

The utility model discloses an overhead safety airbag suitable for protecting main drivers and passengers, which comprises a gas generator, an airbag and an airbag box body, wherein an integral airbag module is arranged at the connecting position of windshield glass and a car roof, and the folded airbag is arranged in the overhead airbag module; the air bag is filled and unfolded through the gas generator to form a buffer channel between the windshield glass and a driver, the upper end of the air bag is positioned above the head of a passenger, the lower end of the air bag is close to the knee of the driver, the air bag is firstly unfolded towards the windshield glass when being inflated and unfolded through setting a reasonable airbag weaving and folding mode, and then the air bag is unfolded towards the driver along an instrument panel. On one hand, the air bag can meet the protection requirement of a driver after the steering system is folded, and can better protect the head, the chest and the neck of the driver; on the other hand, the design concept also provides more possibilities for the design of new interior trim.

Description

Overhead safety airbag suitable for protecting main driver and passengers

Technical Field

The utility model discloses a technique relates to car safety restraint device's technical field, specifically speaking are overhead type air bag suitable for main driver and passenger protection.

Background

Along with the development of the automatic driving technology and the design concept of a novel passenger compartment, the traditional passenger restraint system can not meet the requirement of collision protection of the passenger of the automatic driving automobile in the future, the design concept of the existing novel passenger compartment already relates to the research and development of a foldable steering system, and after the steering system is folded, a driver side air bag arranged in a steering wheel can not play a role in protection, so that the safety of the driver in the occurrence of a collision accident can be directly influenced.

When the front collision of the vehicle occurs, when the collision strength reaches the threshold value of the explosion of the air bag, the safety air bag is unfolded and forms an elastic air cushion in the gap between the passenger and the windshield glass to absorb the collision energy, thereby effectively protecting the head, the chest and other body parts of the passenger from being injured or reducing the injury degree. And after the steering system is folded, the existing driver side airbag loses the original protection effect, and at the moment, an additional passenger restraint device is needed to replace the position of the driver side airbag, so that the collision safety protection of the driver is realized. Driver side overhead airbags have been developed to accommodate the higher level of automotive occupant protection requirements and to increase the possibilities for dashboard styling.

SUMMERY OF THE UTILITY MODEL

The problem to the driver collision safety protection after above-mentioned automatic driving automobile steering system is folding, the utility model aims at providing a overhead type air bag who is applicable to main driver and passenger's protection, avoid because of the steering system is folding, the driver produces the hard contact with parts such as A post or instrument board and causes the driver serious damage, realizes the collision safety protection to the driver.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: the overhead safety air bag suitable for protecting main driver and passenger includes gas generator, air bag and air bag box, and the integral air bag module is set in the joint position between windshield and roof and the folded air bag is set inside the overhead air bag module. The air bag is filled and unfolded through the gas generator to form a buffer channel between the windshield and a driver, so that the head, the chest and the neck of a passenger can be effectively protected. The upper end of the air bag is provided with an inflation hole which is connected with the gas generator, and the lower end of the air bag is provided with two circular air release holes which are symmetrical left and right. The upper end of the air bag is positioned above the head of the passenger, the lower end of the air bag is close to the knee of the passenger, and the side of the air bag close to the windshield glass and the side of the instrument panel after the steering system is folded are both arc-shaped.

Compared with the prior art, the utility model, provide on the one hand based on folded cascade a steering system's basis, make full use of idle car inner space, and this overhead air bag can satisfy the passenger protection demand of driver side betterly, can reduce the damage that leads to because of the folding driver that leads to of steering system and production such as instrument board hard contact cause effectively, on the other hand also provides the space and the possibility of more designs for the instrument board after the steering system is folding.

A control strategy for an overhead airbag adapted for use in a primary occupant protection requirement as described above and illustrated in fig. 3 below, wherein:

(1) the vehicle body sensor receives collision danger signals and transmits the collision danger signals to the ECU;

(2) and the airbag ECU judges whether the danger signal exceeds a set threshold value, if so, an airbag explosion signal is output, otherwise, the airbag explosion signal is not output.

(3) The gas generator receives an explosion signal transmitted by the ECU, inflates the air bag to form a buffer space between the instrument panel and a driver, and plays a role in protecting the driver.

Drawings

Fig. 1 is a schematic view of the installation position and the deployment of the overhead airbag of the present invention.

Fig. 2 is a schematic view of the operation of the present invention when the driver strikes the airbag.

FIG. 3 is a schematic diagram of the overall control strategy of the present invention

In fig. 1, each is labeled as: 1 dashboard, 2 steering, 3 windshield, 4 overhead airbag module, 5 airbag

Detailed Description

The working principle of the present invention is further explained below with reference to the accompanying drawings.

Referring to fig. 1, the utility model provides a driver side overhead type air bag, the prerequisite of being suitable for is that a steering system 2 is folding to contract in instrument board 1, including gas generator and overhead type gasbag module 4, gas generator and overhead type gasbag module 4 are installed in the linking position of windshield 3 and roof, and air pocket 5 after folding arranges in overhead type gasbag module 4. When the inflator starts to inflate the airbag, the folded airbag 5 is first deployed along the windshield 3 and then deployed toward the driver along the instrument panel 1, filling the windshield 3 and the driver-side vehicle interior space to form a cushion passage, which can effectively protect the chest, head and neck of the occupant. The upper end of the air bag is provided with an inflation hole which is connected with the gas generator, and the lower end of the air bag is provided with two circular air release holes which are symmetrical left and right. The upper end of the air bag is positioned above the head of the passenger, and the lower end of the air bag is close to the knee of the passenger.

Referring to fig. 2, a driver moves towards the fully unfolded overhead air bag, the head presses the middle part of the air bag to push the air bag to move forwards to contact with the windshield glass, the back of the air bag is supported on an instrument panel after the steering system is folded and contracted, the other side of the air bag is contacted with the windshield glass, the middle part of the air bag is stressed and sunken into the air bag along with the further forward movement of the driver, and the air bag has larger volume, so that the provided movement space is more sufficient, the head of the driver can be better supported, and the driver is prevented from being more injured.

Claims

1. A top-mounted safety airbag suitable for protecting a main driver and a passenger comprises a gas generator, an airbag and an airbag box body; the air bag is filled and unfolded through the gas generator to form a buffer channel between the windshield glass and a driver, so that the head, the chest and the neck of a passenger can be effectively protected.

2. The overhead air bag as defined in claim 1 wherein said air bag has an inflation port at its upper end for engagement with said inflator and two circular bleed ports at its lower end for left-right symmetry.

3. The overhead airbag of claim 1 wherein said bag has an upper end positioned above the head of the occupant and a lower end positioned proximate the knees of the driver.

4. The overhead air bag of claim 1 wherein the deployed bag is curved to conform to the shape of the folded dashboard side of the steering system and the side adjacent the windshield.