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WO2005113299A1 - Automobile comprenant un airbag pour genoux et airbag pour genoux a integrer dans une automobile - Google Patents

Automobile comprenant un airbag pour genoux et airbag pour genoux a integrer dans une automobile Download PDF

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Publication number
WO2005113299A1
WO2005113299A1 PCT/EP2005/004789 EP2005004789W WO2005113299A1 WO 2005113299 A1 WO2005113299 A1 WO 2005113299A1 EP 2005004789 W EP2005004789 W EP 2005004789W WO 2005113299 A1 WO2005113299 A1 WO 2005113299A1
Authority
WO
WIPO (PCT)
Prior art keywords
knee
motor vehicle
shin
gas bag
vehicle according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2005/004789
Other languages
German (de)
English (en)
Inventor
Arno Gruber
Marco Broussard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Autoliv Development AB
Original Assignee
Autoliv Development AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Autoliv Development AB filed Critical Autoliv Development AB
Publication of WO2005113299A1 publication Critical patent/WO2005113299A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23169—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for knee protection

Definitions

  • the invention relates to a motor vehicle with a knee gas bag according to the preambles of claims 1, 3 and 5, and a knee gas bag for installation in a motor vehicle according to claim 13.
  • knee gas bags in motor vehicles. Such knee gas bags together with a driver or front passenger airbag and a belt system serve to protect the occupant in the event of a frontal crash or a laterally offset frontal crash.
  • the knee airbag has two main tasks: First, it is intended to prevent the occupant's knee-shin area from hitting the interior structure of the vehicle. A knee airbag also has the task of holding the occupant in his sitting position in the event of a head-on collision. He normally shares this task with the belt system; Ideally, however, the knee airbag should be designed in such a way that it keeps the occupant in position - at least to a limited extent - even when the seat belt is not fastened.
  • knee gas bags have mostly been arranged in such a way that their baffles, when the gas bag is completely filled, are located in a standard dummy in the standard sitting position just before the knee-shin area of the dummy, or lie slightly against it. As a result, the knee-shin area is not stressed, but the restraining effect is also relatively low, which has a particularly negative effect if no seat belt is worn.
  • the DT 2 109 637 C3 shows, among other things, a knee gas bag that expands so far into the car that it wraps around almost the entire knee-shin area of the occupant.
  • a knee airbag can certainly achieve a good restraining effect, but the airbag itself has to put up with a very large load on the occupant. It is also difficult to fill such a large-volume gas bag.
  • the object can be achieved in that the knee gas bag is designed and positioned in such a way that at least the outer upper knee-shin regions of the occupant are wrapped around to a defined extent.
  • an insufficient wrap would lead to a restraining effect starting too late or a weak restraining effect at the beginning of the forward displacement.
  • the depth of the knee gas bag must also not be chosen too large, since otherwise there is a considerable risk of injury to the occupants from the knee gas bag itself, particularly if the occupants are sitting too far forward.
  • an airbag that is too large and can reasonably be filled with gas can only be filled with difficulty in a sufficiently short time.
  • the degree of looping found experimentally and specified in claim 1 fulfills these boundary conditions. Due to the wrapping of the knee-shin area, the knees of the occupant are held back very early, so that a forward movement of the occupant is avoided. As a result, the power transmission of the knee gas bag to the occupants is significantly reduced overall.
  • the upper knee-shin areas are not only the outside but also the inside entwined.
  • a corresponding design of the knee gas bag not only improves the restraining effect, but also brings about very good fixation of the legs in the transverse direction, which contributes to improved occupant protection in the event of a laterally offset oblique impact.
  • the wrap around the inner knee-shin regions is preferably essentially as large as the wrap around the outer knee-shin regions.
  • a knee gas bag which at least partially wraps around the knee-shin area of the occupant (or of the dummy), to be precise in an upper area than in a lower area. With the same internal pressure in the entire knee gas bag, this relieves the shin area from the knee area.
  • the impact surface of the knee gas bag should preferably be flat or convex.
  • FIG. 1 shows a completely filled knee gas bag and the leg of an occupant or dummy
  • FIG. 2 shows a section along the line A-A in FIG. 1,
  • FIG. 3 shows a section along the line B-B in FIG. 1,
  • FIG. 4 shows an illustration of the prior art
  • FIG. 5 shows a further illustration of the prior art
  • FIG. 6 shows a knee gas bag with an essentially vertical tether
  • Figure 7 shows an asymmetrical embodiment
  • FIG. 1 shows a completely filled knee gas bag 10 fastened on the passenger side to an inner structure I, which has an impact surface 12.
  • Leg B corresponds to the position of a 50% h ill dummy in its standard sitting position. The dummy sits in its H point.
  • a large part of the baffle surface 12 is flat and bulges convexly at the end of an upper region 12a or lower region 12b.
  • the geometry and position of the knee gas bag 10 are selected such that the baffle surface 12 wraps around the knee-shin area of the 50% H III dummy more strongly in an upper region 12a than in one when the knee gas bag 10 is completely filled lower area 12b.
  • the degree of wrap preferably decreases continuously, as is also shown in this exemplary embodiment.
  • the baffle 12 of the knee gas bag At least the outer upper knee-shin areas are wrapped by the baffle 12 of the knee gas bag. In the preferred embodiment shown here, both the upper and the lower knee-shin areas are wrapped.
  • the baffle 12 also curves in the area between the knees / shins of the occupant in the direction of the occupant, which means that the inner knee-shin areas are also wrapped around.
  • Figures 2 and 3 are sections along the section lines AA and BB in Figure 1.
  • Figure 2 shows an upper
  • Figure 3 shows a lower knee shin area.
  • straight line g is used, which extends horizontally and perpendicularly to vehicle longitudinal axis f.
  • the angle ⁇ is now used as a measure of the degree of the wrap, in which the imaginary tangential planes 15, 15 ', 15 ", 15"' (see FIGS. 2 and 3) are at straight line g.
  • these tangential planes have the orientation of the impact surface 12 along the line at which the contact of the impact surface 12 begins at the knee-shin region.
  • the knee gas bag 10 is symmetrical, which means that the angle ⁇ relating to the leg B a outside the vehicle is exactly as large as the angle ⁇ relating to the leg Bj outside the vehicle.
  • the angle CH (outside of the knee-shin region) is between 15 ° and 75 °, preferably between 35 ° and 55 °.
  • the angle ⁇ 2 (inside) is in the same range and is preferably the same size as the angle ⁇ -t.
  • FIGS. 4 and 5 show the state of the art to clarify the innovation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

La présente invention concerne un airbag pour genoux (10) pour une automobile, ainsi qu'une automobile équipée d'un tel airbag pour genoux. L'airbag pour genoux selon cette invention comprend une surface d'impact (12) et se gonfle en cas de besoin dans la direction de la zone genou-tibia d'un passager. Afin d'améliorer la protection des passagers, ledit airbag pour genoux (10) est conçu et placé de manière que, avec un mannequin de type III 50 % H en position standard, la surface d'impact (12) protège la zone genou-tibia du mannequin avec une géométrie définie.
PCT/EP2005/004789 2004-05-07 2005-05-03 Automobile comprenant un airbag pour genoux et airbag pour genoux a integrer dans une automobile Ceased WO2005113299A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004022741 2004-05-07
DE102004022741.1 2004-05-07

Publications (1)

Publication Number Publication Date
WO2005113299A1 true WO2005113299A1 (fr) 2005-12-01

Family

ID=34968060

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/004789 Ceased WO2005113299A1 (fr) 2004-05-07 2005-05-03 Automobile comprenant un airbag pour genoux et airbag pour genoux a integrer dans une automobile

Country Status (1)

Country Link
WO (1) WO2005113299A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1870297A1 (fr) * 2006-06-23 2007-12-26 Nissan Motor Company Limited Appareil et procédé de retenue d'un passager de véhicule
US20160052476A1 (en) * 2014-08-25 2016-02-25 Ford Global Technologies, Llc Vehicle airbag appendage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170871B1 (en) * 1998-06-24 2001-01-09 Breed Automotive Technology, Inc. Inflatable trim panel assembly for safety restraint systems
EP1300299A1 (fr) * 2000-07-07 2003-04-09 Toyoda Gosei Co., Ltd. Air bag protegeant le genoux
EP1354771A1 (fr) * 2002-04-15 2003-10-22 Takata Corporation Dispositif de protection des jambes d'un occupant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170871B1 (en) * 1998-06-24 2001-01-09 Breed Automotive Technology, Inc. Inflatable trim panel assembly for safety restraint systems
EP1300299A1 (fr) * 2000-07-07 2003-04-09 Toyoda Gosei Co., Ltd. Air bag protegeant le genoux
EP1354771A1 (fr) * 2002-04-15 2003-10-22 Takata Corporation Dispositif de protection des jambes d'un occupant

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1870297A1 (fr) * 2006-06-23 2007-12-26 Nissan Motor Company Limited Appareil et procédé de retenue d'un passager de véhicule
US7669897B2 (en) 2006-06-23 2010-03-02 Nissan Motor Co., Ltd. Vehicle passenger restraining apparatus and method for the same
US20160052476A1 (en) * 2014-08-25 2016-02-25 Ford Global Technologies, Llc Vehicle airbag appendage
US9475445B2 (en) * 2014-08-25 2016-10-25 Ford Global Technologies, Llc Vehicle airbag appendage

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