WO2013034700A1 - Support de générateur de gaz pour un module de coussin gonflable d'un système de retenue d'occupant de véhicule et procédé pour fabriquer un module de coussin gonflable - Google Patents

Support de générateur de gaz pour un module de coussin gonflable d'un système de retenue d'occupant de véhicule et procédé pour fabriquer un module de coussin gonflable Download PDF

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Publication number
WO2013034700A1
WO2013034700A1 PCT/EP2012/067526 EP2012067526W WO2013034700A1 WO 2013034700 A1 WO2013034700 A1 WO 2013034700A1 EP 2012067526 W EP2012067526 W EP 2012067526W WO 2013034700 A1 WO2013034700 A1 WO 2013034700A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas generator
locking element
locking
generator carrier
carrier
Prior art date
Application number
PCT/EP2012/067526
Other languages
German (de)
English (en)
Inventor
Tobias Fechner
Original Assignee
Takata AG
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 Takata AG filed Critical Takata AG
Publication of WO2013034700A1 publication Critical patent/WO2013034700A1/fr

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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

Definitions

  • the invention relates to a gas generator carrier for a gas bag module of a vehicle occupant restraint system according to claim 1 and a method for producing a gas bag module according to claim 14.
  • the gas generator to a gas generator carrier for example, simultaneously forms a housing of the gas bag module , is fixed.
  • the connection between the gas generator and gas generator carrier is designed in the manner of a bayonet closure, as described approximately in US Pat. No. 5,791,682.
  • the problem underlying the invention is to provide a gas generator carrier and a method for producing a gas bag module, which allow a simple manner possible and yet as stable as possible connection between the gas generator and gas generator carrier.
  • a gas generator support for a gas bag module of a vehicle occupant restraint system is provided with
  • the locking element is such that it can not come to a movement of the locking element from the starting position to the locking position by moving the gas generator to the receiving portion, so that the locking of the gas generator by means of the locking element is only possible that the Locking element is moved before placing the gas generator on the receiving portion in a mounting position in which the gas generator is movable past the locking element on the receiving portion, and wherein
  • the locking element is designed so that it moves elastically from the assembly position into the locking position after arranging the gas generator to the gas generator carrier.
  • the locking element can be brought into the assembly position by means of a separate tool, which will be explained below. Only when the gas generator has reached its end position, i. is arranged (mounted) on the gas generator carrier, the locking element is released, whereupon it moves elastically into the locking position. For example, in the end position of the gas generator, its flange region abuts, at least in sections, on the bottom section of the receiving section of the gas generator carrier.
  • the locking element is formed for example by a lateral portion of the gas generator carrier. It is conceivable that the locking element extends in its initial position along the lateral portion, for example as part of the lateral Ab-section, ie substantially does not project from the lateral portion. Therefore, when mounting the gas generator to the gas generator support, which particularly includes moving the gas generator along a direction perpendicular to the addressed bottom portion of the receiving portion, the locking member would not move with the gas generator so that the gas generator flange does not engage the locking member, ie, the locking member can not alone be brought by the placement of the gas generator on the gas generator carrier in its locking position.
  • the locking element protrudes in its initial position from the lateral portion of the gas generator carrier (obliquely or vertically), so that when the gas generator is moved to the receiving portion of the gas generator carrier, in contact with the gas generator (in particular with the Gasgeneratorflansch) would come, so that the locking element would be pressed by the gas generator in the direction of the receiving portion.
  • the locking element is such that when it moves (in particular bent away from the lateral portion of the inflator support) during assembly of the inflator, it does not elastically retract back from the inflator during assembly and in the end position of the inflator could move away but would be blocked by the gas generator.
  • the locking element can thus not be brought into its locking position by mere mechanical interaction with the gas generator during its assembly.
  • the locking element first has to be moved into an assembly position (in particular elastically bent away from the lateral section of the gas generator carrier), so that the gas generator can be guided past the locking element.
  • the locking element Only after arranging the gas generator on the gas generator carrier, for example when it rests with its flange on the bottom portion of the gas generator carrier, the locking element is released as mentioned, whereby this elastic (eg in one direction to the gas generator carrier to) moves into the locking position, in the it engages over the flange portion of the gas generator, wherein it comes to rest, in particular on a side facing away from the gas generator carrier of the flange.
  • the mentioned lateral section of the gas generator carrier preferably runs at least approximately perpendicular to the bottom section of the gas generator carrier, ie the lateral section forms a side wall of the gas generator carrier, which however does not necessarily have to be an outside of the gas generator carrier, as will be explained below.
  • the mentioned lateral section extends at an angle to the bottom section of the gas generator carrier.
  • the locking element may in particular be designed so that it is oriented in its initial position at least approximately parallel to the receiving portion of the gas generator carrier. It is also conceivable that although the locking position of the locking element differs from the starting position, the locking element in the locking position also extends at least approximately parallel to the bottom portion of the gas generator carrier.
  • the locking position and the starting position can also be at least substantially identical.
  • the locking element is formed integrally with the gas generator carrier.
  • the locking element is cut free from the lateral portion of the gas generator carrier, for example by at least two parallel cuts in the lateral portion.
  • the gas generator carrier has a first lateral section, which comprises a first locking element for locking the gas generator, and a second lateral section, which extends at least approximately parallel to the first lateral section and which has a second locking element for locking of the gas generator.
  • the gas generator is arranged between the two lateral sections, that a first portion of the Gasgeneratorflansches is overlapped by the first locking element and a second flange portion of the second locking element.
  • the gas generator carrier has more than two locking elements, for example, at least two locking elements are provided at the two mutually parallel lateral sections of the gas generator carrier.
  • first lateral section and the second lateral section of the gas generator carrier are arranged at different angles, measured with respect to the bottom section of the gas generator carrier, and thus do not run parallel.
  • the gas generator carrier forms a housing of a gas bag module, ie at least a portion of the components of the gas bag module to the outside limited.
  • a side facing away from the bottom portion of the gas generator carrier side of the gas generator carrier forms an outer side of the gas bag module.
  • the receiving portion of the gas generator carrier has a recess which serves to receive the gas generator and which, e.g. forms the mentioned bottom portion of the gas generator carrier.
  • the gas generator carrier (for example, in addition to the recess which forms the gas generator receiving section), forms a receptacle for a gas bag, e.g. is also formed as a recess. It is also conceivable that the receptacle for the gas bag comprises a plurality of recesses, which lie for example on mutually opposite sides of the receiving portion.
  • the locking element may also be adapted to have a free end whose distance from the bottom portion is at least 0.1 mm less than the diameter (i.e., thickness) of the flange portion. Characterized the gas generator is clamped over the locking element and fixed so that a movement of the gas generator, which could produce, for example, rattling noises, is avoided as possible.
  • the locking element has a first portion and a second portion, wherein the second portion is oriented obliquely or at least approximately perpendicular to the first portion. It is possible, for example, that the first section extends in the locking position (and / or in the initial position) of the locking element at least approximately parallel to the receiving portion of the gas generator carrier.
  • the locking element for mounting the gas generator on the generator carrier can be bent from the lateral section of the gas generator carrier from the starting position into the mounting position without the risk of a break-off from the lateral section. Furthermore, the locking element is held in contact with the gas generator flange even during a movement of the gas generator carrier (for example due to vehicle vibrations) and over as long a period as possible.
  • the invention also includes an airbag module (eg, a driver or passenger gas bag module) with the gas generator carrier according to the invention.
  • the invention also relates to a method for producing a gas bag module, comprising the steps:
  • the movement of the locking element takes place in particular with a different tool from the gas generator.
  • the gas generator carrier locks when mounting, i. when moving the gas generator to the end position, not automatically with the locking element, but it is necessary that the locking element is first moved (for example, bent) that the gas generator can be moved past the locking element in the direction of the bottom portion of the gas generator carrier.
  • Fig. 1 is a top view of a gas generator carrier according to a first
  • FIG. 2 shows the gas generator carrier from FIG. 1 in a view from below;
  • FIGS. 3A-3D shows a schematic sectional view of a part of a gas generator carrier according to a development of the gas generator carrier from FIGS. 3A-3D;
  • FIG. 5 is a schematic sectional view of a portion of a gas generator carrier according to another embodiment of the invention.
  • the gas bag module 1 shown in FIG. 1 comprises a gas generator 2 designed as a pot gas generator and a gas generator carrier 3 according to the invention, which simultaneously forms a housing of the gas bag module 1.
  • the gas generator 2 is arranged in a receiving section of the gas generator carrier 3 designed in the form of a central depression 31, the depression 31 having a bottom section 32 and the gas generator 2 having a section projecting through a central opening 33 in the bottom section 32 (see FIG. ,
  • the gas generator 2 has a flange section 22 surrounding a cylindrical region 21, which rests on the bottom section 32 of the gas generator carrier 3.
  • the flange portion 22 has a rectangular (eg substantially square) contour, ie it is bounded by pairs of two mutually parallel sides. However, this rectangular contour is not mandatory.
  • the flange portion 22 may also be round. It is advantageous if the bottom portion 32 of the contour of the flange portion 22 is adapted, such as by a circular recess at a circular flange portion 22 to provide a maximum bearing surface for the flange portion 22.
  • the recess 31 in which the gas generator 2 is arranged is also rectangular, i. bounded by in each case two opposite, at least approximately rectilinear, lateral sections in the form of the side walls 321 to 324. From the opposite, i. parallel to each other, side walls 321, 322, two locking elements in the form of locking hooks (clamping hooks) 41 to 44 are formed in each case.
  • the locking hooks 41 to 44 are each integrally connected to the gas generator carrier 3 and produced (cut) by cuts 31 1 - 313 in the respective side wall, wherein the cuts 31 1, 312 parallel to each other and connected to each other via the section 313 oriented perpendicular to them are, as shown by way of example for the locking hook 41.
  • the locking hooks 41 to 44 are each such that they are in an initial position prior to assembly of the gas generator 2 on the gas generator carrier 3. In this initial position, for example, they run along the respective side walls 321, 322 or as a portion of the side walls 321, 322, i. they do not stand off the sidewalls 312, 322. Insertion of the gas generator into the recess 31, i. Moving the gas generator to an end position with a movement that is substantially perpendicular to the bottom portion 32 of the gas generator carrier 3, therefore, will not lead to a movement of the locking hooks 41 to 44, but the flange portion 22 of the gas generator 2 would only on the free ends of Fit locking hooks 41 to 44.
  • the locking hooks 41 to 44 before mounting the gas generator 2 on the gas generator carrier 3 first from its initial position by bending (moving) in a direction from the bottom portion 32 of the gas generator carrier 3 bring in a mounting position (open) in which the gas generator 2 can be placed on the locking hook 41 to 44 with its flange portion 22 on the bottom portion 32 of the gas generator carrier. If this has taken place, the locking hooks 41 to 44 are released and then move back elastically in the direction of the bottom section 32 of the gas generator support 3, being on a side of the flange section 22 of the gas generator 2 facing away from the bottom section 32 for installation.
  • This locking position of the locking hooks 41 to 44 is shown in Figures 1 and 2.
  • the elastic bending of the locking hooks 41 to 44 from the side walls 321, 322 into the mounting position is effected in particular by pressing a tool against the locking hooks from outside, ie from an underside of the gas generator support (see FIG Direction of the bottom portion 32 of the gas generator carrier 3 are deformed away.
  • the locking hooks 41 to 44 are accessible via the cut-open opening in the side walls 321, 322 from below.
  • the locking hooks 41 to 44 are already pre-bent in their initial position (ie before assembly of the gas generator and before its turning into the mounting position) and therefore no longer extend along the respective side wall 321, 322 but at an angle, for example, at least approximately perpendicular.
  • the flange portion 22 has in its corner regions in each case a fastening opening 221, in each of which engages a protruding from the bottom portion 2 of the gas generator carrier 3 pin 330.
  • the gas generator carrier 3 also forms a receptacle for a gas bag (not shown), the receptacle comprising two receptacle depressions 51, 52 (pockets) arranged on opposite sides of the depression 31.
  • the side walls 321, 322 on which the locking hooks 41 to 44 are formed, are at least partially constructed double-walled, wherein they each form both a side wall of the receiving recesses 51 and 52 and the recess 31, i. the side walls 321, 322 separate the recess 31 from the receiving recesses 51, 52.
  • the locking hooks 41 to 44 each have a first section (for example, section 431 of the locking hook 43) which engages over the flange section 22 of the gas generator 2 and which is formed by the section of the side walls 321, 22 facing the recess 31, and a second section Section (see example 432 of the locking hook 43), which extends at least approximately perpendicular to the first portion and which is formed by one of the receiving pocket 52 for the airbag facing portion of the side wall 322.
  • the first and the second portions are interconnected by a curvature (eg, curvature 433 of the locking hook 43).
  • FIGS. 3A to 3D show steps of the production method according to the invention.
  • a gas generator 2 and a gas generator carrier 3, which simultaneously forms a housing of the gas bag module are provided.
  • the gas generator support 3 has, as in the example of Figures 1 and 2, a shaped as a recess 31 receiving portion with a bottom portion 32 having an opening for insertion of a portion of the gas generator 2.
  • the receiving portion of the gas generator support 3 is bounded analogously to Figures 1 and 2 by side walls 321, 322, each forming a locking element in the form of a locking hook 41, 42.
  • the locking hooks 41, 42 each have a first portion 41 1, 421 and a second portion 412, 422, wherein the first portion 41 1, 421 in the locking position of the locking hook 41, the flange portion 22 of the gas generator 2 engages over and thus locked.
  • the first sections 41 1, 421 extend almost perpendicular to the respective second section 412, 422 and also substantially parallel to the flange section 22 or to the bottom section 32 of the gas generator carrier 3.
  • the locking hooks 41 to 44 are thus provide that the Gasgenerator- flange 22 would not lock with them if it would be used perpendicular to the bottom portion 32 of the gas generator carrier in the recess 31. Rather, the locking hooks 41, 42 would indeed be pressed in the direction of the bottom portion 32, a resilient return movement away from the bottom portion 32 and the flange portion 22 of the gas generator 2 would be blocked by the flange portion 22.
  • a locking by means of the locking hooks 41, 42 such that the first portions 41 1, 421 engage over the flange portion 22 is only possible in that the locking hooks 41, 42 initially moved from its initial position shown in Figure 3A in a mounting position (bent ), as shown in FIG. 3B.
  • the bending of the locking hooks 41, 42 takes place with the aid of a tool which, for example, extends longitudinally.
  • Liehe (pin-like) elements 51, 52 which are each associated with one of the locking hooks and are brought into contact with the locking hooks 41, 42 and push them into the mounting position.
  • the locking hooks 41, 42 In the mounting position are the locking hooks 41, 42, in particular the first portions 41 1, 421 (viewed in a direction parallel to the bottom portion 32), as far away from the flange portion of the center (ie aligned with the opening 33) gas generator 2, that the gas generator 2 can be brought by a movement perpendicular to the bottom portion 32 in its end position, without the flange portion 22 comes into contact with the locking hooks 41, 42.
  • the tool Upon reaching the end position of the gas generator (Fig. 3C) in which the flange portion 22 rests on the bottom portion 32 of the gas generator carrier 3, the tool is removed (or brought to its initial position), i. the locking hooks 41, 42 are released so that they move elastically toward the flange portion 22 of the inflator 2 until they come into abutment with a side of the flange portion 22 facing away from the bottom portion 32.
  • This locking position of the locking hooks 41, 42 is shown in Fig. 3D.
  • An automatic locking of the locking hooks 41, 42 when moving the gas generator to its end position is in particular prevented by the length of the first sections 41 1, 421 is selected so that they move when moving the gas generator 2 perpendicular to the bottom portion 32 without them previously brought into its mounting position would be pressed down (toward the bottom portion 32), but could not return elastically to the starting position.
  • the length of the first portions 41 1, 421 is selected to be greater than the distance between the curvature (eg, curvature 413 of the locking hook 41) over which the first is connected to the second portion 41 1, 412 and the locking element 41 facing portion of the outer edge of the flange portion 22 of the gas generator when it is mounted on the gas generator carrier 3, ie the first portion is longer than the shortest distance between the bend and the inflator flange relative to the mounted state of the inflator.
  • Figure 4 shows a section of an airbag module 1 with a gas generator carrier 3 according to another embodiment of the invention, for example, analog or identical to Figures 3A to 3D is formed. It is indicated that with at least one locking hook 41 there is a jamming with the flange portion 22 of the gas generator 2. In particular, this jamming takes place in such a way that the distance of the first section 41 1 (or its free end 41 1 1) from the bottom section 32 is at least 0.1 mm smaller than the diameter of the flange section 22. Due to the overlapping of the free end 41 1 1 with the flange portion 22 of the gas generator 2 is clamped over the locking element in the locking position and thus fixed. This is indicated in Figure 4 by a (virtual) overlap of the free end 41 1 1 of the locking hook 41 with the flange portion 22.
  • FIG. 5 shows a possible dimensioning of at least one locking hook 41 of the gas generator support 3 according to the invention (designed, for example, according to FIGS. 3A to 3D).
  • the first portion 41 1 of the locking hook 41 has a length I and the second portion which extends approximately perpendicular to the first portion, a length h. It is conceivable that the length I of the first section 41 1 is 0.7 times to 1.3 times the length h of the second section.
  • FIG. 5 may be used with the inflator carrier of FIGS. 1 and 2.

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

Abstract

L'invention concerne un support de générateur de gaz pour un module de coussin gonflable d'un système de retenue d'occupant de véhicule, comprenant une partie réceptrice (31) destinée à recevoir un générateur de gaz (2) du module de coussin gonflable (1), et au moins un élément de verrouillage (41 - 44) qui sert à verrouiller un générateur de gaz (2) disposé dans la partie réceptrice (31) et peut être déplacé d'une position de départ dans une position de verrouillage dans laquelle il recouvre une partie bride (22) du générateur de gaz (2) de sorte qu'il s'étende sur un côté de la partie bride (22) opposé à une partie fond (32) du support (3) de générateur de gaz et s'oppose ainsi à un mouvement d'écartement du générateur de gaz (2) du support (3) de générateur de gaz. L'élément de verrouillage (41 - 44) est conçu de telle manière qu'un mouvement du générateur de gaz (2) sur la partie réceptrice (31) ne peut pas provoquer un mouvement de l'élément de verrouillage (41 - 44) de la position de départ dans la position de verrouillage de sorte que le verrouillage du générateur de gaz (2) à l'aide de l'élément de verrouillage (41 - 44) n'est possible que du fait que l'élément de verrouillage (41 - 44) est déplacé avant la mise en place du générateur de gaz (2) sur la partie réceptrice (31) dans une position de montage dans laquelle le générateur de gaz (2) peut être déplacé en direction de la partie réceptrice (31) en passant devant l'élément de verrouillage (41 - 44), et l'élément de verrouillage (41 - 44) est conçu de manière à se déplacer élastiquement de la position de montage dans la position de verrouillage après la mise en place du générateur de gaz (2) sur le support (3) de générateur de gaz. L'invention concerne également un procédé pour fabriquer un module de coussin gonflable.
PCT/EP2012/067526 2011-09-07 2012-09-07 Support de générateur de gaz pour un module de coussin gonflable d'un système de retenue d'occupant de véhicule et procédé pour fabriquer un module de coussin gonflable WO2013034700A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011082279A DE102011082279A1 (de) 2011-09-07 2011-09-07 Gasgeneratorträger für ein Gassackmodul eines Fahrzeuginsassen-Rückhaltesystems und Verfahren zum Herstellen eines Gassackmoduls
DE102011082279.8 2011-09-07

Publications (1)

Publication Number Publication Date
WO2013034700A1 true WO2013034700A1 (fr) 2013-03-14

Family

ID=46963681

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/067526 WO2013034700A1 (fr) 2011-09-07 2012-09-07 Support de générateur de gaz pour un module de coussin gonflable d'un système de retenue d'occupant de véhicule et procédé pour fabriquer un module de coussin gonflable

Country Status (2)

Country Link
DE (1) DE102011082279A1 (fr)
WO (1) WO2013034700A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5615907A (en) * 1996-06-25 1997-04-01 Morton International, Inc. Airbag inflator retention tabs
US5791682A (en) 1994-12-26 1998-08-11 Toyoda Gosei Co., Ltd. Air bag device with air bag and inflation mounting structure
EP1403147A2 (fr) * 2002-09-27 2004-03-31 TRW Automotive Safety Systems GmbH Ensemble composé d'un générateur de gaz et un support de générateur
DE202005011045U1 (de) * 2005-07-06 2005-10-13 Takata-Petri Ag Vorrichtung zur Befestigung von Airbagmodulen in Kraftfahrzeugen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5678850A (en) * 1996-08-09 1997-10-21 Morton International, Inc. Cover mounting arrangement for airbag module
DE20303303U1 (de) * 2003-02-28 2003-07-03 Trw Automotive Safety Sys Gmbh Gassackmodul
DE102009030601A1 (de) * 2009-06-26 2011-03-03 Trw Automotive Safety Systems Gmbh Baugruppe und Gassackmodul

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5791682A (en) 1994-12-26 1998-08-11 Toyoda Gosei Co., Ltd. Air bag device with air bag and inflation mounting structure
US5615907A (en) * 1996-06-25 1997-04-01 Morton International, Inc. Airbag inflator retention tabs
EP1403147A2 (fr) * 2002-09-27 2004-03-31 TRW Automotive Safety Systems GmbH Ensemble composé d'un générateur de gaz et un support de générateur
DE202005011045U1 (de) * 2005-07-06 2005-10-13 Takata-Petri Ag Vorrichtung zur Befestigung von Airbagmodulen in Kraftfahrzeugen

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