WO2016075191A1 - Module d'airbag muni d'un boîtier qui présente un élément de structure rigide et un élément enveloppant flexible - Google Patents

Module d'airbag muni d'un boîtier qui présente un élément de structure rigide et un élément enveloppant flexible Download PDF

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Publication number
WO2016075191A1
WO2016075191A1 PCT/EP2015/076309 EP2015076309W WO2016075191A1 WO 2016075191 A1 WO2016075191 A1 WO 2016075191A1 EP 2015076309 W EP2015076309 W EP 2015076309W WO 2016075191 A1 WO2016075191 A1 WO 2016075191A1
Authority
WO
WIPO (PCT)
Prior art keywords
strut
gas generator
structural part
gas bag
frame
Prior art date
Application number
PCT/EP2015/076309
Other languages
German (de)
English (en)
Inventor
Marc Schock
Matthias Szeibert
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
Priority to CN201580061779.0A priority Critical patent/CN107107855B/zh
Publication of WO2016075191A1 publication Critical patent/WO2016075191A1/fr

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
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • 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
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R21/2176—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together the air bag components being completely enclosed in a soft or semi-rigid housing or cover
    • 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
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
    • B60R2021/2177—Reaction canisters characterised by material

Definitions

  • Airbag module with a housing which has a rigid Struk t pasture and a flexible enveloping element
  • the invention particularly relates to a passenger front airbag module whose housing is arranged on the inside of a dashboard.
  • a gas bag module whose housing is arranged on the inside of a dashboard.
  • other possible uses for such a gas bag module are also conceivable, in particular the use as a knee gas bag module.
  • a passenger front airbag module always has a housing, an airbag folded into the housing and an inflator - usually in the form of a gas generator - which is connected to the housing and usually also to the airbag and which serves to fill the airbag.
  • the housing of the gas bag module is usually connected by means of several flanges or mounting tabs with the inside of the dashboard.
  • An additional connection with a structural part of the motor vehicle for example with a cross member, may additionally be present. Since the housing during ignition of the gas generator and expansion of the airbag can be exposed to relatively large forces, the casings of such airbag modules originally borrowed virtually exclusively made of metal. Due to the ease of manufacture and also to save weight, such cases are nowadays also completely or partially made of high-strength plastic.
  • the generic 7 770 914 B2 shows an airbag module with such a hybrid housing.
  • the housing is essentially constructed in two parts, namely a structural part, which is obtained by bending from a metal stamped part, and a fabric consisting of enveloping element.
  • the rigid structural member has a substantially rectangular frame with two long and two short sides.
  • the two long pages are referred to as the first page and the second page, and the two short pages are referred to as the third page and the fourth page.
  • the frame also defines the outlet opening of the housing. From the first side of the frame, two struts extend and from the opposite second side of the frame, a strut extends.
  • the second side of the frame is relieved and at least some of the forces which are transmitted in the prior art from the enveloping element to the second side of the frame are relayed, in particular into the region of the first side.
  • the enveloping element has at least one wrap-around section, which wraps around the second side of the frame and which has a connection element which is connected in particular to the first side or adjacent to the first side with the structural part, wherein the retaining bolts of the gas generator unit are preferably used for attachment become.
  • Such a connection of the enveloping element with the second side of the frame relieves the second side of the frame.
  • the gas generator unit is connected with the first side or adjacent to the first side with the structural part, so that it contributes to the stabilization of the structural part or even ensured alone.
  • the gas generator of the gas generator unit is formed as an elongated cylinder.
  • the area of the first side of the frame is stabilized, whereby it can absorb large forces, especially Kräf- te, which are transmitted from the connecting element.
  • the second side of the frame is relieved and at least a part of the forces transmitted in the prior art from the enveloping element to the two side of the frame are transferred to the area of the first side reinforced by the gas generator unit.
  • first strut and the second strut can be connected to one another, in particular in such a way in that they are sections of a common strut section, which may contribute to further stabilization.
  • the gas generator unit has two retaining bolts, wherein a retaining bolt extends through mounting holes of the first and third braces and a second retaining bolt through fastening holes of the second and fourth braces, so that these retaining bolts at the same time also for connecting these struts serve.
  • these retaining bolts also extend through the gas bag so that they contribute to its attachment to the housing.
  • the retaining bolts can also contribute to the fixation of the enveloping element on the structural part. Airbag and enveloping element may form a common element, which together enclose the gas space, or they may be formed as separate elements.
  • Figure 3 shows a gas bag in a view of the bottom of the folded
  • FIG. 4 shows a blank for an enveloping element
  • FIG. 5 shows the stamped part from FIG. 1 in an enlarged view with drawn bending lines
  • FIG. 6 shows the structural part obtained from the blank shown in FIG. 5 in a cross section, the sectional plane corresponding to the sectional plane AA in FIG. 5,
  • FIG. 7 shows the structural part shown in FIG. 6 in a perspective illustration
  • FIG. FIG. 8 shows the structural part from FIG. 8 after arrangement of the gas bag and the gas generator unit, the wrapping element obtained from the blank of FIG. 4 in a schematic, perspective view, the section shown in FIG. 9 after arranging the wrapping element, the sectional plane opposite the sectional plane of FIGS. 5 and 8 5, a second exemplary embodiment of a stamped part in a representation corresponding to FIG. 1, a second exemplary embodiment of an enveloping element, which is provided in particular for a structural element produced from the stamped part of FIG.
  • FIG. 11 in a representation corresponding to FIG. 9, a further exemplary embodiment of the invention in a representation corresponding to FIG. 12, in which the gas bag and enveloping element are formed as a common element, wherein the gas bag is shown in its expanded state, a stamped part of a further embodiment 1 of the invention, in a representation corresponding to FIG. 1, a first blank of a further embodiment of the enveloping element,
  • FIG. 16 shows a second blank of the further exemplary embodiment of FIG
  • FIG. 16 shows the second blank of FIG. 16 in a folded state, the package element sewn from the two blanks of FIGS. 14 and 15 and the wrapping element of FIG. 18 in a perspective depiction.
  • FIGS. 1 to 4 show a schematized but complete material list for the production of the illustrated embodiment of the gas bag module according to the invention.
  • FIG. 1 shows a flat punched part 1 (this could also be referred to as a punching board).
  • This flat stamped part 1 is preferably made of sheet steel and may for example have a thickness between 0.8 mm and 2 mm.
  • FIG. 2 shows a gas generator unit 30, which consists of an elongate, cylindrical gas generator 32 and two retaining bolts 34, 36 connected to the gas generator 32.
  • the retaining bolts 34, 36 may in principle be welded to the housing of the gas generator 32, or they may also be connected by means of clamps (not shown) with the gas generator 32.
  • the gas generator 32 facing away from the ends of the retaining bolts 34, 36 carry threads, since in the illustrated embodiment, nuts 38 are provided as fastening means.
  • Other ways to connect the retaining bolts 34, 36 on the structural part, which is obtained from the stamped part 1, are of course possible. By way of example, crimp compounds may be mentioned here.
  • FIG. 1 shows a gas generator unit 30, which consists of an elongate, cylindrical gas generator 32 and two retaining bolts 34, 36 connected to the gas generator 32.
  • the retaining bolts 34, 36 may in principle be welded to the housing of the gas generator 32, or they may also be connected by means of clamps (not shown)
  • These sections are a substantially rectangular bottom 44, a first side wall 46 extending from one longitudinal side of the bottom and having two apertures 46a, 46b serving as first connecting elements, a second side wall 48 extending from the second longitudinal side opposite the first longitudinal side of the bottom 44 extends, wherein in the illustrated embodiment, the second side wall 48 has a relation to the first side wall 46 greater height.
  • the third side wall 50 and the fourth side wall 52 are provided, which extend from the narrow sides of the bottom 44.
  • Third side wall 50 and fourth side wall 42 each have an elongate opening 50a, 52a.
  • sections marked with a single-dashed number are bent down from the plane of the drawing, sections marked with a double-dashed number are bent upwards from the drawing plane, and sections marked with an uncoated one Number are essentially left in the drawing level.
  • sections marked with a single-dashed number are bent down from the plane of the drawing
  • sections marked with a double-dashed number are bent upwards from the drawing plane
  • sections marked with an uncoated one Number are essentially left in the drawing level.
  • FIGS. 6 to 8 and 10 the constituents which have been formed by bending a section are identified by the respective number but without a dash.
  • the same term is used for the sections to be extracted and for the functional sections resulting from them.
  • first side 1 a and second side 1 b are formed more complex.
  • first page 1 a is discussed.
  • the first side 1 a has attachment tabs 5, which remain in the bending process substantially in the plane of the drawing.
  • a first chamfer 15 connects, which serves the stiffening.
  • a strut section 7 adjoins, one end of which forms the first strut 6 and the other end forms the second strut 8.
  • said two struts 6, 8 are integrally connected to each other, but this is not mandatory.
  • Its hole 1 1 h is after completion of the bending process on the hole 8h of the second strut 8.
  • the foremost region which is referred to as stiffener 13, bent back around the bending line B1 1 by 180 degrees, so that protruding Fixing tabs 12 remain.
  • An inner region of the first side which is referred to as a depression 14, is bent in an L-shape via the two bending lines B10 and B9 (this means that the depression 14 has a first partial section 14a and a second partial section 14b) ). Overall, this results in a substantially U-shaped cross section of the second side 1 b.
  • Figures 6 and 7 show the finished curved structural part 20, it being well recognized that it is from the frame 21, which a first side 21 a, a second side 21 b, a third side 21 c and a fourth side 21 d corresponding sides of the stamped part, the four struts 4, 6, 8 and 1 1 extend. These connect the first side 21 a with the third side 21 c and the first side 21 a with the fourth side 21 d, wherein the connection points (formed by the pairs of holes 4h and 6h and 8h and 1 1 h) adjacent to the first side 21 a are arranged and define a straight line which is parallel to the first side 21st a extends.
  • the frame 21 runs around the outlet opening of the housing when the module is completely assembled.
  • the gas generator 32 is first introduced into the gas bag 60 such that the retaining bolts 34, 36 extend through the apertures 60a, 60b of the gas bag envelope. In this state, the retaining bolts 34 and 36 are guided through the pairs of holes 4h, 6h and 8h, 11 h, until the state shown in FIG. 8 is established.
  • the wrapping element 42 is manufactured, in particular sewn, from the blank 40 of the wrapping element.
  • the finished sleeve element 42 is shown in FIG.
  • the wrapping element 42 is connected to the structural part 20:
  • first the first side wall 46 is attached to the retaining bolts 34, 36, such that each retaining bolt 34, 36 extends through an opening 46a, 46b.
  • the third and the fourth side wall 50, 52 are suspended by means of their elongated opening 50a, 50b in the holding sections 3 and 10 respectively.
  • the wrap-around portions 55, 56 are guided from the inside to the outside around the second side 21 b and their ends are then hooked by means of their openings 55 a and 56 a in the retaining bolts 34, 36.
  • the nuts 38 are screwed onto the threads of the retaining bolts 34, 36.
  • the installation of the gas bag module is completed.
  • the force is predominantly in the heavily reinforced area of the gas generator pins 34, 36, resulting in no or only a small deformation of the structural part. Since it is preferable that the wrapping sections 55, 56 do not exist between the second side 21b and a portion of the armatures.
  • the second side fixing tabs 12 may either be bent up out of the plane of the frame (not shown), or the counter-attachment sections of the instrument panel may be shaped accordingly.
  • FIG. 11 shows a stamped part according to a second exemplary embodiment of the invention.
  • first and second sides do not carry any connection tabs, instead the third side and on the fourth side a respective lateral flange 81, 82 with fastening holes 81 a, 82 a are provided.
  • the stamped part is constructed like that of the first exemplary embodiment, so that the structural element obtained therefrom is likewise shaped substantially in accordance with the first exemplary embodiment.
  • the sheath element can have a single wrap-around section, which has two openings 58a, 58b for being hooked into the retaining bolts 34, 36.
  • the single wrap portion may extend substantially the entire length of the wrap member (FIG. 12). Due to the resulting better power distribution, the second side of the frame is additionally relieved.
  • the enveloping element and gas bag can also be designed as a common element.
  • a lower portion of this common element forms the enveloping element, in which the gas bag is folded.
  • the gas bag in this case encloses the gas space together with the enveloping element, since the gas bag is not closed at the bottom. If other definitions were used, it could also be said that an upper section of the gas bag is folded into a lower section of the gas bag and that the lower section of the gas bag has a dual function, namely as a lower section of the gas bag and as an enveloping element. Since the gas generator unit stabilizes the first side of the frame to a high degree, it may even be possible in some embodiments to carry out the first side of the frame 21 a interrupted.
  • a correspondingly formed stamped part 20 is shown in FIG.
  • FIGS. 15 to 19 show a further embodiment of an enveloping element.
  • this enveloping element consists of two blanks, namely the first blank 90 and the second blank 95, which (as will be explained in more detail later) are interconnected by means of two short connecting seams V1, V2. Both blanks 90, 95 are folded along fold lines F (see FIGS. 15 and 16), so that most of their edges are double-layered.
  • the first blank 90 substantially forms the first side wall 46, the bottom 44, and the wrapping portion 58 (herein).
  • the second blank 95 accordingly forms substantially the second side wall 48, the third side wall 50, and the fourth side wall 52
  • the positions of the connecting seams P1, P2 are shown in FIGS. 15 and 17, while in FIGS. 18 and 19 the connecting seams V1, V2 are themselves drawn.
  • the positions of the connecting seams P1, P2 and the connecting seams V1, V2 themselves are shown in the pattern dash-double-dashed line.
  • the retaining seams H which connect the folded areas with their respective blank itself, are shown in the pattern dash-dot-dash. Hidden edges are shown in dashed lines in FIGS. 17 and 18.

Landscapes

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

Abstract

L'invention concerne un module d'airbag comportant un boîtier présentant une ouverture de sortie, un airbag (60) et une unité de génération de gaz (30) reliée au boîtier, présentant un générateur de gaz (32) agencé dans l'airbag, et servant à remplir l'airbag. Le boîtier est composé d'un élément de structure rigide (20) et d'un élément enveloppant (42) composé d'un matériau flexible. L'élément enveloppant présente un élément de raccordement (46a, 46b) qui est raccordé à l'élément de structure (20) par le premier côté (21a) ou à proximité du premier côté. L'élément enveloppant présente au moins une partie cerclage (56) qui entoure le second côté du cadre et qui présente un second élément de raccordement (55a, 56a) qui est raccordé à l'élément de structure (20) par le premier côté (21a) ou à proximité du premier côté.
PCT/EP2015/076309 2014-11-12 2015-11-11 Module d'airbag muni d'un boîtier qui présente un élément de structure rigide et un élément enveloppant flexible WO2016075191A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201580061779.0A CN107107855B (zh) 2014-11-12 2015-11-11 带有具有刚性结构件和柔性外罩元件的壳体的气囊模块

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014016746.1A DE102014016746B3 (de) 2014-11-12 2014-11-12 Gassackmodul mit einem Gehäuse, welches ein starres Strukturteil und ein flexibles Hüllelement aufweist
DE102014016746.1 2014-11-12

Publications (1)

Publication Number Publication Date
WO2016075191A1 true WO2016075191A1 (fr) 2016-05-19

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PCT/EP2015/076309 WO2016075191A1 (fr) 2014-11-12 2015-11-11 Module d'airbag muni d'un boîtier qui présente un élément de structure rigide et un élément enveloppant flexible

Country Status (3)

Country Link
CN (1) CN107107855B (fr)
DE (1) DE102014016746B3 (fr)
WO (1) WO2016075191A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019068506A1 (fr) * 2017-10-06 2019-04-11 Trw Automotive Gmbh Unité d'airbag de genoux d'un système de retenue d'occupant d'un véhicule à moteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017008379A1 (de) 2017-09-07 2019-03-07 Autoliv Development Ab Airbagmodul
US10994687B2 (en) * 2018-12-11 2021-05-04 Autoliv Asp, Inc. Airbag compression wrappers and related airbag assemblies

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007196A1 (de) * 2005-02-16 2006-09-07 Autoliv Development Ab Airbag und Verfahren zur Herstellung eines Airbags
WO2007005092A2 (fr) * 2005-07-05 2007-01-11 Autoliv Asp, Inc. Boitier souple pour module de coussin de securite gonflable
WO2009017858A1 (fr) * 2007-07-31 2009-02-05 Autoliv Asp, Inc. Appareil de montage de coussin d'air pour passager
US20140246844A1 (en) * 2011-07-11 2014-09-04 Autoliv Asp, Inc. Side airbag module assembly

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
JP4075212B2 (ja) * 1999-05-24 2008-04-16 日本プラスト株式会社 エアバッグ装置
US6325415B1 (en) * 2000-05-31 2001-12-04 Trw Vehicle Safety Systems Inc. Air bag module with tethered door
JP4403028B2 (ja) * 2004-06-30 2010-01-20 オートリブ ディベロップメント エービー 頭部保護用エアバッグの車体への取付装置
JP2011136608A (ja) * 2009-12-25 2011-07-14 Autoliv Development Ab 車両用エアバッグのハウジング構造

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005007196A1 (de) * 2005-02-16 2006-09-07 Autoliv Development Ab Airbag und Verfahren zur Herstellung eines Airbags
WO2007005092A2 (fr) * 2005-07-05 2007-01-11 Autoliv Asp, Inc. Boitier souple pour module de coussin de securite gonflable
WO2009017858A1 (fr) * 2007-07-31 2009-02-05 Autoliv Asp, Inc. Appareil de montage de coussin d'air pour passager
US7770914B2 (en) 2007-07-31 2010-08-10 Autoliv Asp, Inc. Passenger airbag mounting apparatus
US20140246844A1 (en) * 2011-07-11 2014-09-04 Autoliv Asp, Inc. Side airbag module assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019068506A1 (fr) * 2017-10-06 2019-04-11 Trw Automotive Gmbh Unité d'airbag de genoux d'un système de retenue d'occupant d'un véhicule à moteur
US11505151B2 (en) 2017-10-06 2022-11-22 Zf Automotive Germany Gmbh Knee airbag unit of a vehicle occupant restraint system of a motor vehicle

Also Published As

Publication number Publication date
CN107107855A (zh) 2017-08-29
DE102014016746B3 (de) 2015-09-24
CN107107855B (zh) 2019-12-03

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