CN-112424031-B - Side impact protection device

Abstract

A lateral impact protection device is proposed, comprising a curtain-type lateral airbag (22), wherein the curtain-type lateral airbag (22) has a cushion region (24) which extends along a side pane (90) and which in an inflated state at least partially covers the side pane, wherein the cushion region has an upper fastening edge (28), wherein the cushion region (24) is fastened to a side roof frame (18) by means of the upper fastening edge, and wherein the curtain-type lateral airbag has a receiving region (26) which in an inflated state extends from the side pane (90) and away from the cushion region (24), wherein the receiving region forms an inward end of the curtain-type lateral airbag (22), and wherein the receiving region is fastened to a roof (40) by means of its upper edge (29) at a distance from the side roof frame (18).

Inventors

• O. Ugat alba

Assignees

• 达尔菲金属西班牙股份有限公司

Dates

Publication Date

20260512

Application Date

20190618

Priority Date

20180622

Claims (14)

1. 1. A side impact protection device with a curtain-type side airbag (22), wherein the curtain-type side airbag (22) has a cushion region (24) which extends along a side glass (90) and at least partially covers the side glass in the inflated state, the cushion region having an upper fastening edge (28), the cushion region (24) being fastened to a side roof frame (18) by means of the upper fastening edge, and the curtain-type side airbag has a receiving region (26) which extends from the side glass (90) and away from the cushion region (24) in the inflated state, the receiving region forming an inward end of the curtain-type side airbag (22) and being fastened to a roof (40) by means of its upper edge (29) at a distance from the side roof frame (18), wherein the folded-in curtain-type side airbag (22) extends in a vehicle along the side roof frame (18), down a pillar (20) and then extends from the receiving region (26) up to a fastening position (41) again.
2. 2. The side impact protection according to claim 1, characterized in that the curtain-type side airbag (22) has, in the inflated state, from the occupant (10) a shape which tapers gradually toward the assigned a-pillar (20), which is formed by the cushion region (24) and the receiving region (26).
3. 3. Lateral impact protection device according to claim 1 or 2, characterized in that the curtain-type lateral airbag (22) has a middle section (52, 52') connecting the cushion region (24) and the receiving region (26), which middle section at least partially covers the a-pillar (20) in the inflated state.
4. 4. A side impact protection device according to claim 3, characterized in that the intermediate section (52) is constituted by a fold of the curtain side airbag (22).
5. 5. A side impact protection device according to claim 3, characterized in that the intermediate section (52') is constituted by a hose-like, gas-guiding intermediate portion, which is defined by at least one own cut-out portion assigned only to the intermediate portion.
6. 6. The side impact protection device according to claim 5, characterized in that the intermediate portion has a smaller vertical height in the inflated state than the sections of the pad area (24) and the receiving area (26) that are directly adjoining.
7. 7. The side impact protection device according to claim 1 or 2, characterized in that the curtain-type side airbag (22) has an outer wall (36) and an inner wall (60), wherein at least the inner wall is composed of a single cut-out.
8. 8. Lateral impact protection device according to claim 1 or 2, characterized in that the pad area (24) and the receiving area (26) are constituted by respective cut-outs, and that the cut-outs are interconnected in the area of the a-pillar (20), which cut-outs here optionally constitute overflow areas.
9. 9. The side impact protection device according to claim 1 or 2, characterized in that the receiving area (26) is fastened on the roof (40) spaced apart from the assigned upper corner (50) of the windscreen (14) by at least 200 mm measured horizontally and perpendicularly to the vehicle longitudinal axis.
10. 10. The side impact protection device according to claim 1 or 2, characterized in that the receiving area (26) is fastened to the vehicle roof (40) behind a folded-up sun visor (80) in the longitudinal direction of the vehicle.
11. 11. The side impact protection device according to claim 1 or 2, characterized in that the receiving area (26) has a vertically extending edge area (82) which in the inflated state is directed towards the vehicle longitudinal center axis, wherein the vertically extending edge area (82) extends obliquely downwards from the fastening position (41) of the receiving area (26) forward and towards the assigned a-pillar (20).
12. 12. The side impact protection device according to claim 1 or 2, characterized in that the receiving area (26) extends in front of the inflated front airbag (32) in the inflated state.
13. 13. Lateral impact protection device according to claim 1 or 2, characterized in that the pad area (24) and the receiving area (26) are fastened on the a-pillar (20).
14. 14. The side impact protection device according to claim 13, characterized in that the pad area (24) and the receiving area (26) are fastened on the a-pillar (20) along the a-pillar.

Description

Side impact protection device Technical Field The invention relates to a side impact protection device with a curtain airbag, wherein the airbag has a cushion region extending along a side glass window and at least partially covering the side glass window in an inflated state, wherein the cushion region has an upper fastening edge by means of which the cushion region is fastened to a side roof frame. Background Such Curtain side airbags are also known as Curtain airbags (curtainbag) and cover partially completely individual side glazings or side glazings of occupants seated one behind the other. Such curtain-type side airbags extend laterally of the occupant's head in order to provide adequate protection in the event of a side impact. Such extremely costly airbags have proven to be an excellent complement to front airbags in order to provide optimum protection for the occupants. Disclosure of Invention The object of the present invention is to achieve a side impact protection device that provides more protection, in particular in connection with a front airbag. This is achieved by a side impact protection device with a curtain-type side airbag, wherein the airbag has a cushion region extending along the side glass window and at least partially covering the side glass window in the inflated state, the cushion region having an upper fastening edge by means of which the cushion region is fastened to a side roof frame, and the airbag has a receiving region extending from the side glass window and away from the cushion region in the inflated state, which forms an inward end of the airbag, and which is fastened to the roof by means of its upper edge at a distance from the side roof frame. The cushion-like curtain-type side airbags to date extend up to the a-pillar to prevent contact with the a-pillar under a slight oblique impact. At most in the a-pillar region, the airbag is thickened at a front edge extending obliquely downward. The invention proposes a further development in that the airbag here extends in a generally V-or L-shape in plan view, i.e. it has a leg which protrudes from the cushion region and extends partially in front of the occupant. For this purpose, the inwardly extending legs (inwardly meaning in the direction toward the longitudinal center axis of the vehicle in plan view) are fastened again separately, i.e. the so-called receiving areas, in particular fastened to the roof, spaced apart from the lateral roof frame itself. The receiving region is therefore not a thickened projection which is fastened only to the side roof frame or the a-pillar, but rather directly in front of the occupant, rather than only to the airbag section laterally in front of the occupant. The receiving region thus achieves that the occupant cannot contact the a-pillar in the event of a diagonal crash, but is restrained in the receiving region or between the receiving region and the cushion region of the curtain-type side airbag. A further advantage is obtained here in that the head of the occupant is guided in a very well-defined manner in the event of an oblique impact by the corner structure formed by the cushion region and by the receiving region. Another advantage is that the head rotation of the vehicle occupant, which may be caused by contact with the front airbag upon a diagonal impact, is reduced. Further reduction of the rotation of the head is achieved in that the airbag, in the inflated state, has a shape which tapers gradually towards the assigned a-pillar, which is formed by the cushion region and the receiving region, as seen from the occupant. In other words, the receiving area does not protrude at right angles to the pad area, but forms a receiving funnel on the inside with the inside surface of the pad area. Thus, the inner wall of the receiving area (i.e., the wall directed in the vehicle rear direction) extends obliquely outward and forward from the vertically extending edge thereof. The corresponding restraining surface thus formed allows the occupant impinging thereon to be guided obliquely outward and forward along this restraining surface. The head thus does not have the possibility of "sticking" to the airbag due to such friction forces when it is immersed in the airbag and rotating due to oblique impacts. According to one embodiment, the airbag has a central section which connects the cushion region and the receiving region and which, in the inflated state, covers the a-pillar at least in places. In the inflated state of the airbag, this intermediate section may be, for example, the foremost section of the airbag. The middle section is formed, for example, by a fold of the airbag. This means that the airbag is lengthened compared to curtain airbags heretofore. The longitudinal extension of the airbag exceeds the a-pillar, however the airbag is folded back in its front region (for installation) and (in the deployed state) a fold is obtained, wherein the region of the fold is also an overflow re