KR19990041545U - Automotive Airbag Cushion. - Google Patents

Abstract

The present invention relates to an improved airbag cushion for a vehicle to facilitate a fast forward view by allowing rapid contraction after the airbag cushion is inflated.

In constructing a cushion 10 of an airbag mounted on a steering wheel and an instrument panel of a vehicle to reduce injuries of a rider;

The airbag cushion 10 is characterized in that it is possible to help the contraction of the airbag cushion 10 after inflation by radially fixing the bands 11 and 12 of a material having good elasticity in the outward hardness direction.

Description

Automotive Airbag Cushion.

The present invention relates to an airbag cushion for an automobile, and more particularly, to provide an improved airbag cushion so as to easily secure a front view by allowing rapid contraction after the airbag cushion is inflated.

The airbag of the vehicle is installed in front of the driver's seat and front passenger's seat to prevent the driver's or rider's physical damage in the event of a crash or collision while driving and to minimize the rider's injury in the case of a large accident.

These airbags are classified into SRS airbags that are installed for the purpose of protecting the face and large sized airbags that are installed in consideration of the case where the occupant wears a safety belt and a safety belt.

Airbags that perform the above functions and are separated are mounted on the steering wheel in the driver's seat and on the instrument panel in the driver's seat so that the driver directly impacts the steering wheel or the passenger occupies the upper body on the instrument panel. In recent years, there has been an increase in vehicles such as mounting side airbags to protect passengers even in the event of side collisions or installing roof airbags at the tip of the roof to protect passengers' heads. .

When a collision occurs, the airbag is detected as an electrical signal by a sensor, and is configured to inflate the cushion of the airbag by energizing and inflating an inflator (INFLATER).

As mentioned above, the most important part of the airbag is a cushion, and most of these cushions are made of nylon 66, and have sufficient rigidity (durability) even at high pressure during operation. It is designed to have sufficient durability against temperature changes.

However, when such an airbag is inflated at a low speed collision, it is not quickly contracted after the inflation, and thus the driver may not take further action, leading to a larger accident.

That is, in the case of the conventional airbag cushion (1) as shown in Figure 4 to cope with the inflation pressure and environmental changes by configuring only a simple cushion by sewing the fiber material to be resistant to high pressure and durability, such as temperature changes Can be sufficiently extracted, but does not take measures to prepare for shrinkage after expansion.

In this regard, although the airbag operates and the cushion expands, except for a certain time to protect the occupant, it is in a state of continuous expansion despite the rapid contraction, which causes problems such as the above-described visual disturbance during low-speed collisions.

Therefore, the present invention was devised to solve the above problems, and when the low-speed collision, the airbag cushion exerts a rapid contraction force after inflation, so that the driver can quickly take follow-up measures to prevent a post-accident accident. do.

1 is a front view of an airbag cushion to which the technique of the present invention is applied.

FIG. 2 is a half sectional view taken along line AA of FIG.

3 is a half sectional view showing another embodiment.

Figure 4 is a front view of the airbag cushion to which the prior art is applied.

* Description of the symbols used in the main parts of the drawings *

10; Airbag cushion

11,12; band

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention for achieving the above object.

1 is a front view of an airbag cushion to which the technique of the present invention is applied, FIG. 2 is a half sectional view taken along the line A-A of FIG. 1, and FIG. 3 is a half sectional view showing another embodiment together.

According to the present invention, the airbag cushion 10 of the airbag mounted to reduce the injuries of the occupants on the steering wheel and the instrument panel of the vehicle can be configured to allow rapid contraction after inflation so that the driver can take follow-up.

In this configuration, the bands 11 and 12 of a material having good elasticity in the hardness direction are further radially fixed to the outside of the airbag cushion 10 to help the expansion of the airbag cushion 10 in which the expansion is completed.

The bands 11 and 12 may be rubber bands, but it is preferable to use polyester-based high elastic fiber bands to have durability against expansion pressure and temperature change.

As another embodiment, only a predetermined width L is formed in both the upper and lower directions at the center of the longitudinal direction P so that the bands 11 and 12 may be contracted without forming the band 11 and 12 over the entire longitudinal direction of the airbag cushion 10. The respiratory tract also exhibits no contraction.

The present invention as described above is able to secure a forward clock smoothly because the cushion 10 of the airbag is inflated and then contracted immediately after protecting the occupant.

That is, since the inflated cushion 10 is quickly contracted by the contracting force of the bands 11 and 12 that are more fixed in the hardness direction of the cushion 10, the driver can easily take follow-up measures, so that the risk of a late accident You can get away from it.

The present invention as described above has the effect of ensuring safety by improving the contracting force of the airbag cushion to ensure a smooth forward clock after inflation, thereby facilitating subsequent actions.

Claims (3)

In constructing a cushion 10 of an airbag mounted on a steering wheel and an instrument panel of a vehicle to reduce injuries of a rider; Automotive airbag cushion, characterized in that the elastically fixed bands (11, 12) of the elastic material in the outward hardness direction of the airbag cushion (10) to help the contraction of the airbag cushion (10) after inflation. The method of claim 1; The band 11, 12 is a car air cushion cushion, characterized in that the polyester-based high elastic fiber band. The method of claim 1; The band (11, 12) is an airbag cushion for a vehicle, characterized in that to form only a predetermined width (L) in both directions, up and down in the longitudinal center (P) of the airbag cushion (10).