EP1135280A2 - Coussin pour pieds integre dans un tapis de sol et configure comme composant de retenue passive dans un vehicule - Google Patents

Coussin pour pieds integre dans un tapis de sol et configure comme composant de retenue passive dans un vehicule

Info

Publication number
EP1135280A2
EP1135280A2 EP98967121A EP98967121A EP1135280A2 EP 1135280 A2 EP1135280 A2 EP 1135280A2 EP 98967121 A EP98967121 A EP 98967121A EP 98967121 A EP98967121 A EP 98967121A EP 1135280 A2 EP1135280 A2 EP 1135280A2
Authority
EP
European Patent Office
Prior art keywords
carpet
foot cushion
gas generator
foot
footwell
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.)
Withdrawn
Application number
EP98967121A
Other languages
German (de)
English (en)
Inventor
Winfried Buss
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.)
Continental Safety Engineering International GmbH
Original Assignee
Siemens Restraint Systems GmbH
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
Priority claimed from DE1997156430 external-priority patent/DE19756430A1/de
Application filed by Siemens Restraint Systems GmbH filed Critical Siemens Restraint Systems GmbH
Publication of EP1135280A2 publication Critical patent/EP1135280A2/fr
Withdrawn legal-status Critical Current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
    • 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
    • B60R2021/23176—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for foot protection

Definitions

  • the present invention relates to a carpet-integrated foot cushion as a passive restraint component in a vehicle as a device for reducing the risk of injury to the foot and leg area of a person sitting on a seat arranged in the interior of a vehicle in the event of an accident-related deformation of the footwell according to German Patent 196 39 467 .
  • a gas bag of an associated airbag module is arranged in the footwell, into which gas is suddenly introduced by a gas generator upon a trigger signal, whereupon the gas bag briefly fills the footwell in question to a predetermined extent, so as to provide a cushioning cushion for to form the foot area before the bulkhead intrudes into the vehicle interior.
  • vehicles of a newer type have a floor covering in the footwell that is at least expanded by acoustic damping measures compared to previous floor coverings.
  • modern Floor coverings on an acoustic damping layer which is covered with the actual carpet layer.
  • the footwell is lined with a floor covering which consists of an acoustically damping layer and a carpet lying thereon.
  • the foot cushion is formed in the footwell between the acoustically damping layer and the carpet of the floor covering, the gas from the gas generator being conducted into the space between the acoustically damping layer and the carpet and the carpet in the area of the foot cushion which is being formed is only partially attached to the acoustic damping layer.
  • a discreet gas bag is no longer used, but the multilayered structure of modern floor coverings is used to briefly form a foot cushion between the floor covering layers.
  • the multiple layers of modern floor coverings therefore make it possible to dispense with the integration of a conventional gas bag.
  • the solution according to the invention enables the inflatable foot cushion to be integrated into the production process from the outset, even if the production process is modified. This could reduce the cost of the foot pad be kept extremely low, which can lead to widespread market acceptance.
  • venting permeability of the foot cushion which allows the gas to escape from the foot cushion after inflation, is given by the gas permeability of the acoustically damping layer and the carpet, that is to say of the entire floor covering.
  • the carpet in the area of the foot cushion to be trained as a result of the accident is only fixed at predetermined tears or breaks on the acoustically damping layer of the floor covering. If the gas generator is not activated, fixing the carpet to the said tear or break points ensures that the carpet does not wrinkle.
  • these tears or breaks after activation of the gas generator allow the foot cushion to be suddenly inflated to full size within a few milliseconds, in which case the carpet is no longer attached to the acoustic-damping layer in that the underside of the carpet is removed from the fixing points tears off. A predictable design of the foot pad is guaranteed.
  • the gas generator which conducts the gas into the foot cushion
  • the gas generator is a two-stage gas generator.
  • Two separate pressure lines could be connected to this, one of which conducts gas into the foot cushion according to the invention.
  • the other pressure line could advantageously be connected, for example, to a frontal airbag.
  • both the foot cushion and a frontal airbag would be inflated. This reduces the amount of material required, such as that of several generators, to a minimum.
  • the chronological order for example It can also be used to control how many milliseconds the foot cushion should be inflated earlier than a frontal airbag.
  • the gas generator is a single-stage gas generator, to which, however, several pressure lines are connected, the ratio of their flow-related diameters having a significant influence on the temporal inflation behavior of the connected gas bag and the foot cushion.
  • FIG. 1 shows the schematic structure of the device
  • Figure 2 shows the device at rest
  • Figure 3 shows the device directly after ignition of the gas generator.
  • FIG 1 clearly shows the schematic structure of the device.
  • the floor covering 19 in the footwell of the vehicle nowadays consists of an acoustically insulating layer 22 to which a carpet layer 23 is applied.
  • the hatched areas of the acoustically insulating layer 22, which are in a fixing connection with the carpet 23, are shown hatched. Those places of the layer 22 where the carpet 23 is not are brightly colored. It can be seen that in the light spots there are some tears or breaks 21 at which the carpet 23 is fixed when the system is at rest. This allows the carpet 23 not to wrinkle when the system is at rest.
  • a gas pressure line 25 is guided through the layer 22 and is connected to a gas generator 20.
  • FIG. 2 shows the system in the idle state, in which the floor covering 19 is assembled from the acoustically damping layer 22 and the carpet 23 thereon, preferably fixed as explained with reference to FIG. 1.
  • the gas generator 20 is in the idle state.
  • the gas generator 20 is ignited, as indicated in FIG. 3. Then gas is suddenly passed through the pressure line 25 into the prepared foot pad 24, which leads to bulging of the carpet 23 on the layer 22.
  • the foot cushion is not realized by a separate, discrete gas bag, but rather by introducing the gas from the gas generator 20 between the layers 22 and 23 of the floor covering 19, which is generally present anyway, in the vehicle. After the foot cushion 24 has been inflated, the gas escapes through the gas-permeable floor covering 19, so that the foot cushion 24 can perform its damping function.

Abstract

L'invention concerne un dispositif destiné à réduire le risque de blessure dans la zone des pieds et des jambes d'un individu assis dans le siège d'un véhicule, en cas de déformation de la zone où se trouvent les pieds, due à un accident. Cette zone est munie d'un revêtement de sol (19) comprenant une couche insonorisante (22) et un tapis (23) placé dessus. Ce dispositif comprend un coussin gonflable (24) placé au sol, associé à la zone où se trouvent les pieds, et dans lequel un générateur de gaz (20) qui lui est associé, introduit brusquement du gaz, en réponse à un signal de déclenchement. Le coussin gonflable placé au sol (24) remplit momentanément la zone concernée, où se trouvent les pieds, dans une mesure prédéterminée, avant que le tablier d'auvent ne pénètre dans l'habitacle. Selon l'invention, le coussin gonflable placé au sol (24) est formé entre la couche insonorisante (22) et le tapis (23) du revêtement de sol (19). Le gaz est guidé depuis le générateur de gaz (10), dans l'espace compris entre la couche insonorisante (22) et le tapis (23) qui n'est fixé que par endroits à la couche insonorisante (22), dans la zone où le coussin glonflable (24) prend forme.
EP98967121A 1997-12-18 1998-12-14 Coussin pour pieds integre dans un tapis de sol et configure comme composant de retenue passive dans un vehicule Withdrawn EP1135280A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19756430 1997-12-18
DE1997156430 DE19756430A1 (de) 1996-09-26 1997-12-18 Teppichintegriertes Fußpolster als passive Rückhaltekomponente in einem Fahrzeug
PCT/EP1998/008181 WO1999030931A2 (fr) 1997-12-18 1998-12-14 Coussin gonflable au sol, integre dans un tapis, sous forme d'element de retenue passif dans un vehicule

Publications (1)

Publication Number Publication Date
EP1135280A2 true EP1135280A2 (fr) 2001-09-26

Family

ID=7852462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98967121A Withdrawn EP1135280A2 (fr) 1997-12-18 1998-12-14 Coussin pour pieds integre dans un tapis de sol et configure comme composant de retenue passive dans un vehicule

Country Status (4)

Country Link
US (1) US6352281B1 (fr)
EP (1) EP1135280A2 (fr)
AU (1) AU3248599A (fr)
WO (1) WO1999030931A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351046B (en) 1999-06-18 2003-01-08 Autoliv Dev Improvements in or relating to an air-bag arrangement
FR2796022B1 (fr) * 1999-07-06 2002-12-27 Sai Automotive Sommer Ind Dispositif de protection des membres inferieurs du conducteur et/ou du passager avant d'un vehicule automobile
US6817625B2 (en) 2000-03-14 2004-11-16 Autoliv Development Ab Safety arrangement
EP1183168B1 (fr) * 2000-03-14 2004-10-13 Autoliv Development Aktiebolag Dispositif de securite
GB2360254B (en) * 2000-03-14 2003-06-04 Autoliv Dev Improvements in or relating to an air-bag arrangement
US6962368B2 (en) 2000-03-14 2005-11-08 Autoliv Development Ab Load distribution element for an air-bag
DE20319429U1 (de) * 2003-12-12 2005-04-28 Carcoustics Tech Center Gmbh Trittfeste, akustische wirksame Bodenverkleidung für Kraftfahrzeuge
US7264271B2 (en) * 2004-08-13 2007-09-04 General Motors Corporation Reversibly deployable energy absorbing assembly and methods for operating the same
US7350851B2 (en) * 2005-03-08 2008-04-01 Gm Global Technology Operations, Inc. Reversibly expandable energy absorbing assembly and methods for operating the same
US10266140B2 (en) * 2017-01-19 2019-04-23 Ford Global Technologies, Llc Restraint system
DE102017210121B4 (de) 2017-06-16 2019-06-06 Ford Global Technologies, Llc Sicherheits-Fußstützvorrichtung eines Fahrzeugs
USD835424S1 (en) 2018-04-19 2018-12-11 Qiang Fu Foot rest cushion

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Publication number Priority date Publication date Assignee Title
US2943866A (en) * 1957-01-10 1960-07-05 Witter Mathias Protective device
US3591232A (en) * 1969-04-01 1971-07-06 Lewis B Simon Automatic vehicle occupant restraint
US4154472A (en) * 1977-09-09 1979-05-15 Gateway Industries, Inc. Method and apparatus for protecting a vehicle occupant
JPS54155523A (en) * 1978-05-26 1979-12-07 Takada Kogyo Kk Seat for car
JPS63207744A (ja) * 1987-02-20 1988-08-29 Yamato:Kk 自動車用マツト
GB2218385A (en) * 1988-03-29 1989-11-15 Trw Repa Gmbh Vehicle passive restraint system with gas bag and knee cushion
DE4032385C2 (de) * 1990-10-12 1994-06-23 Audi Ag Sicherheitseinrichtung für einen Fahrzeuginsassen
JP3082392B2 (ja) 1992-02-05 2000-08-28 タカタ株式会社 車両乗員の保護装置
DE4345185C2 (de) * 1993-03-31 1995-03-23 Mueller Franz Dipl Ing Fh Verfahren zum Verringern der bei einem Aufprall eines Fahrzeugs auf ein Hindernis auf einen auf einem Sitz angegurteten Fahrzeuginsassen einwirkenden Kräfte unter Verwendung von Airbags
DE4405075A1 (de) * 1994-02-17 1996-01-18 Siegfried Langwieser Insassenschutz für Automobile gegen seitlichen Aufprall, Verhinderung gefährlicher Verformung der Insassenzelle, Türen und Sitze sowie des Dachraumes
US5458366A (en) * 1994-06-01 1995-10-17 Morton International, Inc. Compartmentalized airbag knee bolster
DE4445487C1 (de) * 1994-12-20 1996-05-02 Audi Ag Sicherheitseinrichtung für Fahrzeuge
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Non-Patent Citations (1)

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Title
See references of WO9930931A2 *

Also Published As

Publication number Publication date
US6352281B1 (en) 2002-03-05
WO1999030931A3 (fr) 1999-11-25
AU3248599A (en) 1999-07-05
WO1999030931A2 (fr) 1999-06-24

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