EP1998982A2 - Module sac gonflable pour véhicule à moteur - Google Patents

Module sac gonflable pour véhicule à moteur

Info

Publication number
EP1998982A2
EP1998982A2 EP07722045A EP07722045A EP1998982A2 EP 1998982 A2 EP1998982 A2 EP 1998982A2 EP 07722045 A EP07722045 A EP 07722045A EP 07722045 A EP07722045 A EP 07722045A EP 1998982 A2 EP1998982 A2 EP 1998982A2
Authority
EP
European Patent Office
Prior art keywords
airbag module
module according
opening
wall part
gas
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Withdrawn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
EP07722045A
Other languages
German (de)
English (en)
Inventor
Thomas Lube
Andreas Pradel
Marc Prost-Fin
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.)
Takata Petri AG
Original Assignee
Takata Petri 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 Petri AG filed Critical Takata Petri AG
Publication of EP1998982A2 publication Critical patent/EP1998982A2/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Withdrawn legal-status Critical Current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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/276—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure
    • 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
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
    • 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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/261—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means other than bag structure to diffuse or guide inflation fluid
    • 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
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R21/276—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure
    • B60R2021/2765—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow with means to vent the inflation fluid source, e.g. in case of overpressure comprising means to control the venting

Definitions

  • the invention relates to an airbag module for a motor vehicle according to the preamble of claim 1 and the preamble of claim 2.
  • Such an airbag module comprises an airbag which can be inflated to protect an occupant with gas, a gas generator with which the gas for inflating the airbag can be released, a module housing which surrounds the gas generator and has at least one throughflow opening which in particular in such a gas-conducting manner with the Can be connected to the gas bag that generated by the gas generator gas flow out of the flow passage and can enter the airbag, and at least one provided on the module housing outflow, which is associated with at least one movable between two different positions first element which closes the outflow opening in an initial position and by the movement of the initial position into an end position, the first outflow opening is so apparent that the gas generated by the gas generator is at least partially directed into an outer space surrounding the airbag module.
  • the invention is based on the problem to improve an airbag module of the type mentioned in terms of the variability of its Aufblas s.
  • the at least one outflow opening is associated with a second element movable at least between two different positions, with which the opened outflow opening can be closed by the fact that the first element (closure element) moves from an initial position into an end position.
  • the at least one flow opening is associated with a second element movable at least between two different positions, wherein in an initial position of the second element, the flow opening is open and can be closed by a movement of the movable second element in an end position such that Gas generator generated gas can not pass through the flow opening in the gas bag.
  • Accident situation is customizable. For example, in an oop situation (out-of
  • the movable first element is mounted on the module housing, in such a way that it is linearly displaceable from its initial position in a first direction of movement in its end position.
  • the movable second element is preferably also mounted on the module housing such that it is linearly displaceable from its initial position in a second direction of movement in its end position, wherein the first Direction of movement is preferably set opposite to the second direction of movement.
  • the two movable elements are designed as flat slides, which are preferably movable independently of each other, so that in particular the movement of the first element from its initial position to its end position a closed or an open state of
  • the two elements are designed to open or close the outflow opening, so that it can be opened for a predeterminable period of time (from an opening time to a closing time) in order to vent the airbag in a controlled manner (time-controlled).
  • the two movable elements each have at least one passage opening, wherein the at least one passage opening of the first
  • the at least one outflow opening and the corresponding passage opening are displaced relative to one another such that an adjacent to the passage opening arranged region of the first element covers the at least one outflow opening and thereby closes ( it does not depend on a complete gas-tightness of the closed discharge opening).
  • the second element is arranged in its initial position such that its at least one through-hole is at least partially, preferably completely, in register with the corresponding, at least one outflow opening, so that gas can escape from the module housing through the outflow opening and the one through-opening unless the first element obscures the discharge opening in its initial position.
  • the first element is moved from its initial position to its end position, so that the passage opening of the first element is brought into coincidence with the outflow opening. Since the second element is initially in its initial position described above, thereby the discharge opening is opened.
  • the second element For optionally subsequent closing of the outflow opening, the second element is moved from its initial position to its end position, wherein the through-hole device is out of engagement with the outflow opening, so that the outflow opening is closed by the second element, which is in its end position.
  • matching two openings does not mean that two considered openings - e.g. the passage opening of the first element and the corresponding outflow opening of the module housing - are arranged congruent at the same contour and area, but only that the first element movably mounted on the module housing is displaced against the module housing such that its passage opening at least partially over the outflow opening to lie comes that the two openings are gas-conducting communication with each other.
  • the two through-holes are congruent with the corresponding outflow opening, that is, they have the same contours and opening cross-sections.
  • the complete open discharge opening (or a totality of such openings) preferably has an opening cross-section of 4000 mm 2 to 5000 mm 2 , via which gas can escape from the module housing into the surrounding outer space.
  • the movable first element serves to open or close the at least one outflow opening, while the second movable element is arranged and provided for opening or closing the throughflow opening, via which the gas generator arranged in the module housing can be connected to the gas bag in a gas-conducting manner is.
  • the first and the second element are initially in their respective initial position prior to inflation of the airbag.
  • the first element is mounted on the module housing such that its passage opening is arranged in the initial position out of alignment with the outflow opening and covers the outflow opening for closing the outflow opening.
  • the second element is arranged in its initial position in coincidence with the flow opening, so that gas generated by the gas generator is introduced through the throughflow opening into the gas bag, wherein the passage opening when moving the second element from its initial position to its end position for closing the flow opening is brought out of coverage with the flow-through.
  • the outflow opening is provided in a wall portion of the module housing, which is preferably releasably fixed to the module housing, wherein the first element is mounted on the wall part, that it is displaceable against the wall part to the passage opening in or out of alignment with the outflow opening bring.
  • the wall part is preferably formed in one piece with the module housing.
  • the wall part is designed as an insert, wherein the wall part has two edge regions which oppose each other transversely to the first direction of movement and engage for releasably securing the wall part on the module housing in each case in a groove, wherein the two grooves are formed on the module housing ,
  • the first element is longitudinally slidably mounted on an inner side of the wall part, which faces an inner space enclosed by the module housing, wherein the first element can slide along the inner side of the wall part.
  • the first element is preferably guided in rails, which are provided on the inside. Such rails are preferably formed integrally with the wall part.
  • the second movable element is likewise mounted so as to be displaceable longitudinally on the wall part, the second element preferably being displaceable on an outer side of the wall part facing away from the inside of the wall part is mounted, that is, the wall part is arranged transversely to the first direction of movement between the two elements, which are preferably movable in opposite directions of movement from the respective initial position into the respective end position.
  • the second element is displaceably mounted on the inside of the wall part, wherein the second element is arranged transversely to the first direction of movement between the first element and the wall part.
  • the module housing preferably has a chamber which surrounds the gas generator at least in sections, which is in particular cylindrical, wherein the cylinder axis is preferably oriented parallel to the first direction of movement. From this chamber are transverse to the first direction of movement two walls - preferably tangentially - from, the two walls opposite each other transverse to a main deployment direction of the airbag.
  • the main deployment direction of the airbag is understood to be that direction along which the airbag moves when inflated toward an occupant to be protected.
  • the gas generator is preferably designed as a tube gas generator which extends along the first direction of movement and whose longitudinal axis coincides with the cylinder axis of the chamber.
  • the wall part is provided on one of the two walls.
  • the two grooves in which the wall part with its opposite edge regions for releasable fixing to the wall is inserted on the wall in question, wherein the two grooves are parallel to each other and extend along the first direction of movement.
  • the wall part itself is aligned such that the at least one outflow opening formed on the wall part allows outflow of gases generated by the gas generator in a direction oriented transversely to the main deployment direction.
  • the first and the second movable element is preferably formed in each case as a planar slide, which - as well as the wall part as a carrier of the two movable elements - extends flat along an extension plane
  • the wall part forms a part of the chamber, wherein the wall part faces away from an occupant to be protected.
  • the grooves for releasably fixing the insert formed as wall part are provided in this variant of the invention to the chamber and parallel to each other along the first direction of movement or along the cylinder axis of a cylinder-shaped chamber.
  • the two grooves can in particular also be formed integrally with the chamber.
  • a wall part provided on the chamber as well as the movable elements mounted thereon have a convex curvature which corresponds to the curvature of the chamber (cylinder jacket) about the cylinder axis.
  • the airbag module has two holding elements on which together with the chamber surrounding the gas generator form a further chamber of the module housing, which is gas-conductively connected to the chamber via the flow-through and forms a receptacle for the folded airbag.
  • the two walls each have a side facing away from the chamber, along one chamber (or cylinder axis) extended edge, on each of which a mounting region for the gas bag is formed.
  • the gas bag can be inflated via an inlet opening with gases that can be generated by the gas generator, and furthermore has a fixing ring encircling the inflow opening, which can be brought into engagement with the attachment areas of the further chamber for fastening the gas bag to the module housing.
  • the attachment areas may for example each form a groove into which corresponding areas of the fixing ring can be inserted.
  • the second movable element is displaceably mounted on a further wall part of the module housing, wherein the at least one throughflow opening is formed on this further wall part.
  • the further wall part is detachably fixed to the module housing.
  • the further wall part is preferably integrally connected to the module housing.
  • the further wall part is designed as an insert, with two opposite transverse to the first direction of movement edge regions which engage for releasably securing the further wall part in two grooves formed on the module housing.
  • the second element is slidably mounted on an inner side of the further wall part, which faces an interior space surrounded by the module housing, wherein preferably the further wall part forms a part of the chamber, which is arranged along the main deployment direction of the airbag between the gas generator and the gas bag.
  • the two grooves are each provided on an inner side of the respective wall facing the interior of the module housing (further chamber), so that the two grooves lie opposite each other transversely to the main deployment direction and face each other.
  • each of the two elements is associated with a movement generating device which is adapted to move the first or second element from its initial position to its end position.
  • the first or second movement-generating device is preferably set up and provided to move the respective movable element from its initial position to its final position at a predefinable opening or closing time, wherein those times depend on at least one occupant or sensible sensor unit
  • Motor vehicle-related parameters occupant weight, occupant size, position of the occupant with respect to the airbag, speed of the motor vehicle or the occupant, accidental delay of the motor vehicle or the occupant, etc. are calculated by an electronic control unit.
  • the two movement-generating devices which may be designed as identical parts, work pyrotechnically.
  • the movement generating devices on a pressurizable piston, which is adapted to press by applying pressure against an edge of the first and second element to move the respective movable member from its initial position to its end position.
  • both movement-generating devices are formed on the wall part, preferably in such a way that they face each other along the first direction of movement.
  • the wall part preferably forms a preassemblable submodule together with the two movement generating devices and the two elements.
  • the first movement generating device is formed on the wall part, whereas the second movement generating device is formed on the further wall part.
  • the wall part together with the first movement-generating device and the first element preferably forms a preassemblable first sub-module
  • the further wall part together with the second movement-generating device and the second element preferably forms a pre-assembled, separate second sub-module
  • these two sub-modules are designed as equal parts, which has an advantageous effect on the manufacturing cost.
  • FIG. 1 is an exploded perspective view of an airbag module, with a first and a second movable element for opening or closing a discharge opening of the airbag module.
  • FIG. 2 shows a planar wall part of the airbag module shown in FIG. 1, with the first element displaceably mounted thereon and the second element displaceably mounted thereon for opening or closing outflow openings of the wall part;
  • FIGS. 3A-5B show the wall part shown in FIG. 2 with different positions of the movable elements;
  • Fig. 6 is an exploded perspective view of a modification of the in the figure
  • FIG. 7 shows a curved wall part of the airbag module shown in FIG. 6, with the first element displaceably mounted thereon and the second element displaceably mounted thereon for opening or closing outflow openings of the curved wall part;
  • FIGS. 1 and 6 shows an exploded perspective view of a further modification of the airbag module shown in FIGS. 1 and 6;
  • FIG. 12 shows an arched wall part of the airbag module shown in FIG. 11, with the first element displaceably mounted thereon;
  • FIGS. 13A-B show the curved wall part shown in FIG. 12 with different positions of the movable first element
  • FIG. 1 shows in connection with FIGS. 2 to 5B an airbag module 1 with an airbag S which can be inflated to protect a person by means of a gas generator G designed as a tubular gas generator.
  • the gas generator G is in a chamber
  • the module housing M has a plurality of outflow openings O (in FIG. 1, only one outflow opening O is exemplified), which by means of a first and a second movable element E, E ', which are each driven by a movement generating device 40, 50, can be opened or closed in a time-controlled manner in order to adapt the gas pressure prevailing in the gas bag S to the circumstances of an accident situation (deceleration of the motor vehicle, weight and position of the occupant to be protected).
  • the chamber 70 of the airbag module 1 is cylindrical, wherein the cylinder axis is transverse to a main deployment direction H of the airbag S.
  • the cylinder axis extends substantially along the vehicle transverse axis y, in particular parallel to the vehicle transverse axis y.
  • the longitudinal axis of the gas generator G arranged in the chamber 70 coincides with the cylinder axis of the chamber 70.
  • the gas generator G has two free ends which are each clamped by a part 77b, 78b of a holding element 77, 78 which projects into the chamber 70 along the cylinder axis, so that the gas generator G is fixed with respect to the chamber 70 surrounding it.
  • the two holding elements 77, 78 each have a flange 77a, 78a, which serves for fastening the airbag module 1, which is formed in the figure 1 as a passenger airbag module, on a motor vehicle part.
  • the further chamber 79 of the module housing M is formed by two walls 71, 72 which extend tangentially from the cylindrical chamber 70, namely from the jacket, along the main deployment direction H and face each other transversely to the main deployment direction H, the two walls 71, 72 preferably run parallel to each other, as well as by the two holding elements 77, 78, which extend in sections along the main deployment direction H over the chamber 70.
  • a respective edge 73, 74 facing away from the chamber 70 is provided on the two walls 71, 72, wherein the two edges 73, 74 each extend along the cylinder axis of the chamber 70 and are designed as fixing regions for a fixing ring 81, which has an inflow opening 80 the airbag S rotates.
  • the fixing ring 81 can be brought into engagement with the attachment areas 73, 74.
  • the two attachment portions 73, 74 are formed for this purpose as grooves into which the rectangular fixing ring 81 can be inserted.
  • Gas released in the chamber 70 by the gas generator G can thus pass through the flow-through openings O 'into the further chamber 79 and from there through the inflow opening 80 into the gas bag S in order to inflate it.
  • a flat, rectangular (plane) wall portion 20 is provided on one of the walls 71, which is detachably connected to the wall 71 connectable.
  • two mutually parallel grooves 26a and 26b are provided on the wall 71, each extending parallel to the cylinder axis of the chamber 70 and are arranged one above the other along the main deployment direction.
  • the wall part can be inserted, wherein corresponding edge portions 25a, 25b of the wall part engage in the grooves and are guided by these.
  • the outflow openings O of the module housing M are rectangular in shape and formed in two superimposed rows on a wall portion 20.
  • the wall part 20 conceals outbreaks of the wall 71 from the outer space A of the airbag module 1, which are arranged such that the outflow openings O formed in the wall part 20 are arranged in front of those outbreaks, so that when the outflow openings O are open Gas from the further chamber 79 in the outer space A of the airbag module 1 can be passed.
  • the wall part 20 In its installed state, the wall part 20 has an inner side 27 facing an inner space I of the module housing M and an outer side 28 facing away from the inner side 27 (facing the outer space A).
  • the projections 65 each have an edge portion of the second element E ', which are arranged between each two recesses 66 to be under attack.
  • the first element E is displaceably mounted along the first direction of movement R.
  • Both elements E, E ' have a plurality of through openings 10, 11 which are formed in terms of number, position and shape (contour and cross-sectional area) such that the through-openings 10, 11 of the two elements E, E' are each completely congruent with corresponding outflow openings Arrange O of the wall portion 20.
  • the outflow openings O of the wall part 20 are rectangular and arranged in two superimposed rows on the wall part 20, each extending along the first direction of movement R.
  • both elements E, E ' occupy their initial positions.
  • the first element E covers the outlet openings O in each case with webs of the first element E, which are arranged along the first direction of movement R between each two through openings 10 of the first element E.
  • the second element E ' is arranged in its initial position with respect to the wall part 20 such that the passage openings 11 are in coincidence with the outflow openings O. in the Result, the outlet openings O are therefore closed before inflation and all generated by the gas generator G G is first passed into the gas bag S (see Figures 3A and 3B).
  • the outflow openings O are optionally opened as described above.
  • the first element E has to be displaced from its initial position along the direction of movement R into its end position, in which - like the second element E 'in its initial position - the outflow openings O are released (compare FIGS. 4A and 4B).
  • the second element E ' is moved from its initial position to its end position, namely opposite to the first element E, the second element E' in its end position - like the first one Element E in its initial position - the outflow openings O hidden (see Figures 5A and 5B).
  • the outflow openings O can thus be opened at a predefinable time for a predefinable period of time in order to effect a controlled venting of the airbag S.
  • a movement generating device 40, 50 For moving the first and the second element E, E 'is in each case a movement generating device 40, 50 is provided.
  • the two movement-generating devices 40, 50 each have a cylindrical pressure chamber 43, 53, wherein the two pressure chambers 43, 53 are each arranged on a free edge portion of the wall portion 20, which are opposite to each other along the first direction of movement R and aligned.
  • a piston 41, 51 is movably mounted along the first direction of movement R in the two pressure chambers 43, 53.
  • the pistons 41, 51 are inserted through openings 43a, 53a in the respective pressure chamber 43, 53, wherein the two openings 43a, 53a are then each closed with a spherical closure element 41a, 51a, for this purpose in the respective opening 43a, 53a be pressed.
  • each movement generating device 40, 50 has a pyrotechnic gas generator 41b, 51b sealingly inserted into a further opening 43b, 53b of the respective pressure chamber 43, 53.
  • a pyrotechnic gas generator 41b, 51b sealingly inserted into a further opening 43b, 53b of the respective pressure chamber 43, 53.
  • the piston 41 is pressed in the direction of movement R against a transversely to the direction of movement R extending edge 42 of the first element E, so that it is moved in the direction of movement R from its initial position to its end position.
  • the movement of the second element E 'from the initial position to the end position is opposite to the first direction of movement R.
  • Figure 6 shows in connection with Figures 7 to 10B is a schematic exploded view of a modification of the type shown in Figure 1.
  • the wall portion 20 is not displaced on one of the two walls 71, 72 from its initial position to its end position stored, but at the chamber 70, in such a way that the outer side 28 of the wall portion 20 faces away from a person to be protected.
  • the wall part 20 of FIG. 6 has a convex curvature, viewed from the outside A, which is adapted to the curvature of the (cylindrical chamber 70). Accordingly, the movable elements E, E 'mounted on the wall part 20 also have the same convex curvature.
  • the second element E ' is not mounted on the outer side 28 of the wall part 20 as in FIG. 1, but also on its inner side 27, between the wall part 20 and the first element E.
  • the depression V is accordingly along a normal to Inner side 27 oriented direction designed twice as deep (the depth corresponds to the sum of the thicknesses of the first and second elements E, E '), as in the airbag module 1 shown in FIG.
  • FIG. 11 shows in connection with FIGS. 12 to 14B an exploded view of a modification of the airbag module 1 shown in FIG. 6, wherein, in contrast to FIG. 6, only one movable element, namely the first one, on the first wall part 20
  • Element E is mounted longitudinally displaceable on the inside 27 of the wall part 20.
  • Motion generating device 40 of the type shown in Figures 1 and 6, respectively (see Fig. 12).
  • the first element E Before the gas bag S is inflated, the first element E is in its initial position, in which it closes off the outlet openings O provided on the wall part 20 in the previously described manner (FIG. 13A). By igniting the movement generating device 40, the first element E is moved from its initial position to its end position, in which it releases the outflow openings O according to FIG. 13B in the manner already explained (passage openings 10 are arranged congruently with the outflow openings O).
  • the flow openings O ' are provided on a further wall part 30 which is arranged between the chamber 70 and the further chamber 79 of the module housing M and for closing the throughflow openings O 'is constructed substantially identical to the first wall part 20 of Figure 11.
  • the further wall portion 30 has a corresponding curvature of the chamber 70 (convex curvature) and is also designed as a drawer, which is guided with two mutually transverse to the cylinder axis of the chamber 70 edge portions 35a, 35b in a respective groove 36a, 36b, the are formed on mutually facing inner sides of the walls 71, 72.
  • the two wall parts 20, 30 face each other along the main deployment direction H and at least partially surround the gas generator G in cross-section.
  • the second element E ' is now movably mounted, namely - corresponding to the first, the wall part 20 mounted element E - in a recess V of the interior I facing inside 27 of the other wall portion 30.
  • the further wall portion 30 forms thus, a controllable closable partition between the chamber 70 and the other chamber 79th
  • the second element E 'of the further wall part 30, as well as the first element E of the wall part 20, is in its initial position (see Fig. 14A), in which the flow-through openings O' coincide with the passage openings 11 of the second element E 'are.
  • the flow-through openings O 'during inflation of the airbag S are first opened (with the outlet openings O closed), so that all the gases generated by the gas generator G through the flow openings O' in the further chamber 79 and from there through the inlet opening 80 into the airbag S arrive.
  • the outflow openings O can now be opened at any time (usually during the inflation of the airbag S) by the first element E means the movement generating device 40 is shot from its initial position to its end position.
  • venting mechanisms described herein consists on the one hand in the modular design (the wall parts 20, 30 together with the movement generating devices 40, 50 and the movable elements E, E 'independent, pre-assembled sub-modules) and on the other in the relatively large vent cross-section, which by the lattice-like arrangement of the outflow, Outflow and through-holes O, O ', 10, 11 can be achieved while maintaining high structural stability of the movable elements E, E'. Furthermore, it is advantageous that by the linear movement of the movable elements E, E '(slide), the risk of blocking the slides E, E' during movement from the initial position to the end position is low.
  • controllable outflow openings and throughflow openings O, O ' are provided by means of the described venting mechanisms, which additionally or alternatively act as standard discharge openings in an airbag.
  • crash activate (trigger) relevant (collision-relevant) or vehicle-relevant parameters are, for example, the size, mass and position of the occupant to be protected (with respect to the gas bag), the speed of the vehicles involved in the collision (or relative speed), the deceleration of the vehicle during the crash (collision) ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un module sac gonflable (1) pour véhicule à moteur, comprenant les éléments suivants: un sac à gaz (S) qui peut être rempli d'air pour protéger un occupant; un générateur de gaz (G) qui libère le gaz pour remplir le sac à gaz (S); un boîtier de module (M) qui entoure le générateur de gaz (G) et qui présente notamment au moins un orifice de passage (O') pouvant être relié par conduction de gaz avec le sac à gaz (S) de manière à ce le gaz généré par le générateur de gaz (G) puisse sortir de l'orifice de passage (O') et pénétrer dans le sac à gaz (S); au moins un orifice d'évacuation (O) disposé sur le boîtier de module (M) et associé à un premier élément (E) mobile entre au moins deux positions, lequel élément, en position initiale, ferme l'orifice d'évacuation (O) et, par déplacement de sa position initiale en position finale, ouvre l'orifice d'évacuation (O) de telle sorte que le gaz généré par le générateur de gaz (G) est au moins en partie dirigé vers un espace externe (A) entourant le module sac gonflable (1). Selon l'invention, à l'orifice d'évacuation (O) est associé un deuxième élément (E') mobile entre au moins deux positions, lequel élément passe d'une position initiale à une position finale pour fermer l'orifice d'évacuation (O) ouvert, ou bien, à l'orifice de passage (O') est associé un deuxième élément (E') mobile entre au moins deux positions, l'orifice de passage (O') étant ouvert lorsque le deuxième élément (E') est en position initiale et fermé par passage du deuxième élément (E') mobile en position finale, de façon que le gaz généré par le générateur de gaz (G) ne puisse pas passer par l'orifice de passage (O') et pénétrer dans le sac à gaz (S).
EP07722045A 2006-03-30 2007-03-08 Module sac gonflable pour véhicule à moteur Withdrawn EP1998982A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006015315 2006-03-30
PCT/DE2007/000472 WO2007115519A2 (fr) 2006-03-30 2007-03-08 Module sac gonflable pour véhicule à moteur

Publications (1)

Publication Number Publication Date
EP1998982A2 true EP1998982A2 (fr) 2008-12-10

Family

ID=38233778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07722045A Withdrawn EP1998982A2 (fr) 2006-03-30 2007-03-08 Module sac gonflable pour véhicule à moteur

Country Status (5)

Country Link
US (1) US20090096196A1 (fr)
EP (1) EP1998982A2 (fr)
CN (1) CN101415588A (fr)
DE (1) DE112007000706A5 (fr)
WO (1) WO2007115519A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011005082A1 (de) * 2011-03-04 2012-09-06 Gm Global Technology Operations, Inc. Durchbrochenes Airbaggehäuse mit Bahneinlage
AT12688U1 (de) * 2011-09-01 2012-10-15 Isi Automotive Austria Gmbh Schaltmechanismus und vorrichtung zum adaptiven entlüften eines gassacks mit einem solchen schaltmechanismus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29805209U1 (de) * 1998-03-23 1998-06-04 TRW Automotive Safety Systems GmbH, 63743 Aschaffenburg Aufprall-Schutzvorrichtung für Fahrzeuginsassen
DE19839283A1 (de) * 1998-08-28 2000-03-09 Breed Automotive Tech Airbag-Modul mit Gasverteiler
WO2000043242A1 (fr) * 1999-01-21 2000-07-27 Barney Klinger Systeme de retenue a gaz pressurise pour vehicule, s'adaptant au passager
JP4759867B2 (ja) * 2001-07-25 2011-08-31 タカタ株式会社 エアバッグ装置
EP1890915B1 (fr) * 2005-06-10 2008-10-08 Takata-Petri AG Module de coussin gonflable de securite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007115519A2 *

Also Published As

Publication number Publication date
WO2007115519A3 (fr) 2007-12-21
DE112007000706A5 (de) 2008-12-24
CN101415588A (zh) 2009-04-22
US20090096196A1 (en) 2009-04-16
WO2007115519A2 (fr) 2007-10-18

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