DE102017007885A1 - Occupant protection device - Google Patents

Abstract

The invention relates to an occupant protection device (1) for a vehicle having at least one airbag (2, 3) associated with an occupant (6) which is fluidically coupled to a gas generator and at a detected collision imminent to the vehicle or at a detected collision of the vehicle can be positioned in its operative position. According to the invention two airbags (2, 3) are provided, each having a number of fluidly interconnected chambers (K1 to K4), wherein the chambers (K1 to K4) of the one airbag (2) and the chambers (K1 to K4) of the other Airbags (3) are each arranged on a flat fabric (7), wherein the fabrics (7) facing the occupant (6) and the occupant (6) of the two positioned in operative position airbags (2, 3) and the tissues ( 7) is at least partially surrounded.

Description

The invention relates to an occupant protection device for a vehicle having at least one airbag assigned to an occupant, which is fluidically coupled to a gas generator and can be positioned in its operative position in the event of a detected collision imminent to the vehicle or in the event of a detected collision of the vehicle.

In general, an airbag for a vehicle is known. The airbag, which is embodied, for example, as a so-called windowbag, is fluidically connected to a gas generator which can be triggered in the event of a detected collision imminent to the vehicle or in the event of a detected collision of the vehicle. An expanding gas of the gas generator can be supplied to the airbag, whereby it unfolds and assumes its active position, whereby a risk of injury to an occupant of the vehicle, the seat is associated with the airbag, can be reduced.

The invention has for its object to provide an improved over the prior art airbag for an occupant of a vehicle.

The object is achieved by the features specified in claim 1.

Advantageous embodiments of the invention are the subject of the dependent claims.

An occupant protection device for a vehicle has at least one airbag assigned to an occupant, which is fluidically coupled to a gas generator and can be positioned in its operative position in the event of a detected collision imminent to the vehicle or in the event of a detected collision of the vehicle. According to the invention, the occupant protection device comprises two airbags, each having a number of fluidically interconnected chambers, wherein the chambers of the one airbag and the chambers of the other airbags are each arranged on a flat fabric, the tissues facing the occupant and the occupant of the two in the operative position positioned airbags and the tissues is at least partially surrounded.

By means of a passenger protection device designed in this way, the safety for the occupant to whom the airbags are assigned can be increased, the two interacting airbags replacing a so-called conventional windowbag and / or thorax bag.

In addition, a risk of injury to the occupant is significantly reduced by means of the occupant protection device, since the occupant is surrounded even in different seating positions of the two airbags in their operative position.

Embodiments of the invention are explained in more detail below with reference to drawings.

• 1 schematisch eine Draufsicht auf eine Insassenschutzvorrichtung mit zwei Airbags in ihrer Wirkstellung,
• 2 schematisch eine Seitenansicht eines Insassen auf einem Fahrzeugsitz mit ausgelösten Airbags,
• 3 schematisch eine Draufsicht des Insassen auf dem Fahrzeugsitz mit den ausgelösten Airbags in einer weiteren Ausführungsform und
• 4 schematisch eine perspektivische Ansicht des Insassen auf dem Fahrzeugsitz mit den ausgelösten Airbags in einer denkbaren weiteren Ausführungsform.

Showing:

• 1 2 is a schematic plan view of an occupant protection device with two airbags in their operative position;
• 2 2 is a schematic side view of an occupant on a vehicle seat with deployed airbags;
• 3 schematically a plan view of the occupant on the vehicle seat with the triggered airbags in another embodiment and
• 4 schematically a perspective view of the occupant on the vehicle seat with the triggered airbags in a conceivable further embodiment.

Corresponding parts are provided in all figures with the same reference numerals.

1 shows a plan view of an occupant protection device 1 that have two airbags 2 . 3 includes, which are positioned in their operative position.

In addition, a seat back 4 a vehicle seat shown in more detail in the following figures 5 shown.

The occupant protection device 1 includes the two airbags 2 . 3 where each of the airbags 2 . 3 is fluidically coupled to a gas generator, not shown, in the seat back 4 , in particular the side cheeks, are arranged.

In the unencumbered state of the airbags 2 . 3 These are also arranged in the side walls, with an airbag 2 in one and another airbag 3 is arranged in the other side cheek.

The two airbags 2 . 3 are shown in their operative position, ie in the pressurized state, wherein each of the airbags 2 . 3 three chambers K1 to K3 includes. In this case, in other embodiments, the occupant protection device 1 the number of chambers K1 to K2 vary.

The chambers K1 to K3 are fluidly connected to each other, wherein a respective first chamber K1 is fluidly connected to the gas generator. An expanding gas released from the gas generator flows into the first chamber K1 , from this in a second chamber K2 and from this into a third chamber K3 of the respective airbag 2 . 3 ,

In addition, the chambers are K1 to K3 the airbags 2 . 3 at one in the following 2 to 4 Inmates shown in detail 6 facing outer contour with a flat fabric 7 , ie a cloth, arranged, in particular connected, for example sewn.

The tissue 7 is so at the chambers K1 to K3 of the respective airbag 2 . 3 attached and has small dimensions than the corresponding airbag 2 . 3 with the juxtaposed and interconnected chambers K1 to K3 is long.

By doing that, the tissue 7 shorter, has the respective airbag 2 . 3 in its operative position, a curvature.

In the present embodiment according to 1 are the airbags 2 . 3 designed as comparatively large thorax bags, with the two airbags 2 . 3 due to the shorter fabric 7 Surround the occupant at least partially, in particular encompass.

In that the occupant protection device 1 two such airbags 2 . 3 the occupant becomes 6 Protected from both sides, whereby on the one hand a contact with vehicle parts and on the other hand, a contact with a next to the occupant 6 sitting further inmates can be largely excluded.

The tissue 7 in the form of the cloth lies in the operative position of the two airbags 2 . 3 essentially over the entire surface of the occupant 6 without exerting on these punctiform or linear increased pressure and / or cutting loads in the airbag deployment.

The occupant protection device 1 is triggered when it is determined based on detected signals from detection units of a collision sensor that the vehicle is imminent a collision or the collision itself is detected.

In one possible embodiment, at the exposed ends of the airbags 2 . 3 ie at the third chamber K3 , mutually corresponding connecting elements, for example, to form a so-called hook and loop fastener, be arranged.

This allows the two airbags 2 . 3 connect in their operative position, causing the inmate 6 fully from the airbags 2 . 3 is enclosed. In other words, the two airbags embrace 2 . 3 the inmates 6 , causing a risk of injury to the occupant 6 on the vehicle seat 5 can be significantly reduced.

The in the area of the third chamber K3 interconnected airbags 2 . 3 stabilize the two airbags 2 . 3 in their shape, this connection of the two airbags 2 . 3 a forward displacement of the occupant 6 does not counteract.

Preferably, such has two such airbags 2 . 3 comprehensive occupant protection device 1 To ensure their protective function a comparatively long service life in terms of airbags 2 . 3 on.

By means of a thus executed occupant protection device 1 a conventional window bag and / or thorax bag can be replaced.

In addition, it is possible that a risk of injury to the occupant 6 essentially independent of its seating position by means of the two airbags 2 . 3 comprehensive occupant protection device 1 at least reduce it.

In 2 is the one on the vehicle seat 5 sitting inmate 6 with a greatly simplified airbag 2 shown.

Another embodiment of the occupant protection device 1 is in 3 shown, with the two airbags 2 . 3 four chambers K1 to K4 and a respective fourth chamber K4 a free end of the respective airbag 2 . 3 forms.

In detail shows the 3 a plan view of the on the vehicle seat 5 seated inmates 6 with the occupant protection device 1 in the further embodiment.

Another conceivable embodiment of the occupant protection device 1 is in 4 shown, with only the tissues 7 and not the airbags 2 . 3 are shown.

In this embodiment, the tissue 7 at least one opening 8th on, including several such openings 8th may be provided, but which is a function of the tissue 7 in relation to the occupant protection device 1 do not interfere.

LIST OF REFERENCE NUMBERS

1

Occupant protection device

2

air bag

3

another airbag

4

seatback

5

vehicle seat

6

inmate

7

tissue

8th

opening

K1

first chamber

K2

second chamber

K3

third chamber

K4

fourth chamber

Claims (3)

Occupant protection device (1) for a vehicle with at least one an occupant (6) associated airbag (2, 3) which is fluidically coupled to a gas generator and positionable in a detected, the vehicle imminent collision or in a detected collision of the vehicle in its operative position is characterized by two airbags (2, 3), each having a number of fluidically interconnected chambers (K1 to K4), wherein the chambers (K1 to K4) of the one airbag (2) and the chambers (K1 to K4) of further airbags (3) are each arranged on a planar fabric (7), the fabrics (7) facing the occupant (6) and the occupant (6) of the two positioned in operative position airbags (2, 3) and the tissues (7) is at least partially surrounded. Occupant protection device (1) after Claim 1 , characterized in that the respective fabric (7) is shorter than the respective by means of the chambers (K1 to K3) running and acted upon with gas airbag (2, 3). Occupant protection device (1) after Claim 1 or 2 , characterized in that the airbags (2, 3) have at their free end a connecting element, by means of which the two airbags (2, 3) for fully surrounding the occupant (6) are connectable to each other.

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