EP1492687A1 - Unite de sac gonflable de securite comportant un element de maintien et un element support destine a la fixation du sac de gaz - Google Patents

Unite de sac gonflable de securite comportant un element de maintien et un element support destine a la fixation du sac de gaz

Info

Publication number
EP1492687A1
EP1492687A1 EP03722276A EP03722276A EP1492687A1 EP 1492687 A1 EP1492687 A1 EP 1492687A1 EP 03722276 A EP03722276 A EP 03722276A EP 03722276 A EP03722276 A EP 03722276A EP 1492687 A1 EP1492687 A1 EP 1492687A1
Authority
EP
European Patent Office
Prior art keywords
opening
unit according
airbag unit
carrier element
holding
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Withdrawn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
EP03722276A
Other languages
German (de)
English (en)
Inventor
Eleonore Braun
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 EP1492687A1 publication Critical patent/EP1492687A1/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Withdrawn legal-status Critical Current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
    • B60R21/20—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
    • B60R21/2171—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together specially adapted for elongated cylindrical or bottle-like inflators with a symmetry axis perpendicular to the main direction of bag deployment, e.g. extruded reaction canisters

Definitions

  • the invention relates to an airbag unit according to the preamble of claim 1.
  • Such an airbag unit is part of an airbag module which is used in motor vehicles to protect an occupant in the event of a crash. It comprises an airbag inflatable by means of a gas generator; a flat carrier element, in front of which a surface of the gas bag is arranged and which has an opening for fixing the gas bag to the carrier element; and a holding element which cooperates with the support element to fix the gas bag to the support element.
  • an airbag module for a vehicle is known in which the gas bag is fixed with the aid of a fastening frame, two bolts with a nut and washer and a fastening strip and is connected to a gas generator.
  • the fastening frame is inserted into the gas bag and positioned within the gas bag so that on the one hand the inflow opening of the gas bag and a corresponding opening of the fastening frame are arranged congruently and on the other hand two openings in the gas bag and fastening frame for the screw connection are arranged one above the other.
  • the mounting frame with gas bag is designed such that after this first assembly is connected to the gas generator assembly, the inflow opening of the gas bag and the outflow opening of the gas generator overlap.
  • the pre-assembled gas generator assembly is formed by assembling Gas generator, mounting strips and a cover plate for covering a second outflow opening of the gas generator.
  • the invention is based on the problem of providing an airbag unit that is easy to assemble and that enables the gas bag to be reliably fixed to a carrier element of the airbag unit using simple means.
  • a portion of the gas bag extends through the opening of the carrier element to the other side of the carrier element and is held there in front of the other surface of the carrier element by means of the holding element.
  • the dimensions of the opening of the carrier element and of the holding element are selected such that the holding element can be passed through the opening of the carrier element in a first spatial orientation along a lead-through axis.
  • a second spatial orientation which in particular corresponds to an orientation essentially transverse to the first spatial orientation, it is not possible to pass the holding element through the opening of the carrier element.
  • the edge region of the opening of the carrier element and surface elements of the holding element then lie against one another.
  • the simple positioning and fixing of the gas bag to the carrier element is advantageous in the solution according to the invention. Assembly is possible without additional mechanical auxiliary devices and disassembly of defective components can be carried out easily.
  • the holding element is preferably received within an interior space formed by the associated gas bag section.
  • the holding element can only be wrapped around by the gas bag section.
  • the carrier element and the holding element are designed and arranged in such a way that the holding element engages behind the opening in the carrier element in a form-fitting manner and that the holding element which is wrapped or received by the gas bag section during an airbag release, in which the gas bag unfolds due to the inflow of the gas generated by the gas generator, is pressed against the carrier element.
  • the gas bag When the airbag is deployed, the gas bag deploys due to the inflowing gas generated by the gas generator and the resulting forces acting in the gas bag deployment direction partially pull the gas bag section through the opening of the carrier element, with the holding element, which is partly wrapped or received by the gas bag section, in the direction the airbag deployment is pulled. Due to the selected geometry, the holding element is pressed against the edge of the opening of the carrier element. The tensile forces generated by the gas bag deployment on the holding element thus brace the holding element and the carrier element against one another, preventing the gas bag section from being pulled further through the opening of the carrier element from the holding element and the gas bag being held on the carrier element.
  • the holding element is expediently designed as a plate with such a thickness and edge lengths and the opening of the carrier element in the form of a slot with such a slot width and a slot length that the plate thickness is smaller than the slot width and at least one edge length of the plate is smaller than the slot length of the carrier element.
  • the holding element and the opening of the carrier element can also be designed in accordance with other geometric shapes.
  • the holding element is provided with a throughflow opening and the airbag in the region of the airbag section is provided with an inflow opening, which are arranged adjacent to the opening of the carrier element.
  • the airbag unit according to the invention can advantageously be used in an airbag module in which a gas generator with an outflow opening is arranged such that the inflow opening of the gas bag and the outflow opening of the gas generator overlap one another.
  • a gas generator with an outflow opening is arranged such that the inflow opening of the gas bag and the outflow opening of the gas generator overlap one another.
  • a tubular, in particular cylindrical, element is preferably arranged so that it projects through the throughflow opening of the holding element and the opening of the carrier element. In this way, the positioning of the holding element, the gas bag section, the carrier element and the gas generator relative to one another is facilitated and tilting of the holding element is prevented.
  • the tubular element has a gas outlet in the form of a tube opening.
  • the tubular element is arranged at the outflow opening of the gas generator and projects through the inflow opening of the gas bag, the throughflow opening of the holding element and the opening of the carrier element.
  • the tube opening opens into the gas bag to allow the gas to flow in when the airbag is deployed. The risk of gas escaping and / or of the holding element being displaced by the Compressing forces on the holding element occurring during the blowing of the gas into the gas bag are avoided.
  • the tubular element is arranged at the throughflow opening of the holding element and projects with the tube opening through the opening of the carrier element into the gas bag, the throughflow opening with the tubular element being positioned at the outflow opening of the gas generator.
  • an element for positioning the holding element in the airbag unit and for the gas generator are also conceivable.
  • the element can, for example, also be made shorter and not protrude into the gas bag.
  • the carrier element is part of a housing which at least partially encompasses the gas generator and thereby positions the holding element with the gas bag in relation to the gas generator.
  • the housing and the gas generator are fixed to each other with screw connections. The housing can subsequently be used to fasten the airbag module in the vehicle.
  • a multi-part holding device which has two clamps can advantageously be used for positioning and receiving the airbag unit and the gas generator.
  • the clamps at least partially encompass the gas generator and accommodate the essentially flat support element at a defined distance from the gas generator. Furthermore, the clamps have openings for receiving the carrier element and are supported on the gas generator.
  • the clamps are arranged on both sides of the outflow opening, along an extension direction of the support element, and contain ten each have an opening for receiving the support element, the support element having bending sections at its end sections.
  • the bending sections protrude from the openings and are bent essentially transversely to the openings, so that the bending sections fix the carrier element to the clamps.
  • the holding device has at least one fastening element which fixes the gas generator to the carrier element and encloses the gas generator in the region of the outflow openings in such a gas-tight manner that a chamber opening into the gas bag is formed.
  • Rapid assembly is also achieved by designing the fastening element as a separate part, which can be connected to the carrier part, in particular by pushing on, conical pressing or screwing.
  • the fastening element is a separate part, which can be connected to the carrier part, in particular by pushing on, conical pressing or screwing.
  • simple manufacture of the separate part is possible.
  • the airbag unit can be easily adapted to different gas generator types, since only the separate fastening part has to be replaced.
  • a clamp-shaped fastening element can have a threaded attachment and a screw guided therein, the screw being used for the radial bracing of the gas generator which is stable in the clamp-shaped fastening element. It is achieved in such a way that the retaining element ment and thus also the gas bag is firmly pressed onto the carrier element.
  • the fastening of the gas generator to the carrier element can be further simplified if the gas generator can only be pushed through the annular fastening element for fastening.
  • the carrier element is designed in several parts. Two parts of the carrier element are provided with cutouts which, arranged adjacent, form the opening of the carrier element, wherein the parts of the carrier element can have extensions which at least partially encompass the gas generator.
  • the gas generator is advantageously of cylindrical design and has an outflow opening provided on the cylinder jacket surface.
  • a stabilizing element is provided, which is arranged between the holding element and the gas generator and supports the holding element on the holding device or the housing.
  • the holding element can advantageously be fixed on the inside of the gas bag. It is thereby achieved that the holding element cannot slip when the gas bag is folded and when the gas bag is installed in the housing.
  • At least one fabric part can be attached, in particular sewn, to the inside of the gas bag.
  • the seams are so in the edge area that a pocket is formed between the fabric part and the gas bag, which serves to receive and fix the holding element.
  • a part of the edge area for example a longitudinal or transverse edge, of the fabric part there is no need for fastening, so that an opening of the pocket is created through which the holding element can be inserted into the pocket.
  • at least two fabric parts are provided which have openings opening in opposite directions. When the two fabric parts are arranged one above the other or opposite one another, a secure pocket secured against slipping out can be formed for receiving the holding element.
  • the holding element can also be introduced into the pocket via a slot arranged in the central region of the fabric part. Securing against slipping out can also be achieved by means of tabs sewn across the fabric part.
  • La a cross section through a section of an airbag unit with an airbag, a carrier element and a holding element for fixing the airbag to the carrier element;
  • Fig. Lb a cross section according to Fig la, wherein the holding element is provided with a through-flow opening and the gas bag with an inflow opening in the region of the holding element;
  • FIG. 2a shows a cross section according to FIG. 1b, a gas generator with an outflow opening being additionally shown;
  • 2b a further development of the exemplary embodiment from FIG. 2a with a tubular element which is arranged at the outflow opening of the gas generator;
  • FIG. 2c a further development of the exemplary embodiment from FIG. 2a with a tubular element which is arranged on the holding element;
  • FIG. 3a shows a perspective view of an airbag unit according to FIG. 2b after assembly
  • FIG. 3b an exploded view of the individual parts of an airbag module according to FIG. 3a;
  • FIG. 4a a perspective view of an airbag unit with the carrier element from FIG. 4;
  • FIG. 4b a perspective view of the airbag unit from FIG. 4a with a packaged gas bag
  • FIG. 6 shows a perspective view of an airbag unit with the carrier element from FIG. 5;
  • FIG. 7 shows a cross section through an airbag unit with a stabilizing element in the region of the holding element; 8: a cross section of an airbag unit with a carrier element on which a receiving device for an airbag is molded;
  • 9a a longitudinal section of a section of an airbag unit with a housing, a gas generator, a carrier element and a holding element for fixing a gas bag to the carrier element;
  • FIGS. 9a and 9b an exploded view of the individual parts of the airbag module according to FIGS. 9a and 9b;
  • 10a a longitudinal section of a section of an airbag module in a further embodiment with a gas generator, a housing, a gas bag, a carrier element and a holding element for fixing the gas bag to the carrier element;
  • FIGS. 10a and 10b an exploded view of the individual parts of the airbag module according to FIGS. 10a and 10b;
  • 11a a longitudinal section through an airbag module in a further embodiment with a housing, a carrier element, a gas bag and a holding element for fastening the gas bag to the carrier element and a clamp for fastening the gas generator to the housing;
  • 11b a cross section through the airbag module according to FIG. 11a;
  • 12a a longitudinal section of a section of an airbag module in a further embodiment with a gas generator which is fastened by means of a clamp which is formed in one piece with the housing;
  • Fig. 16 perspective view of the inside of the gas bag with two pockets for receiving the holding element in a further embodiment
  • FIG. 17 shows a perspective view of the inside of the gas bag with a pocket for receiving the holding element, which has a cut in its central region;
  • Fig. 18 a perspective view of the inside of the gas bag with a pocket for receiving the holding element and a tab for securing the position of the holding element;
  • Fig. 19 a perspective view of the inside of the gas bag with a pocket for receiving the holding element, the holding element being secured against slipping out of the pocket with two tabs.
  • Figure la shows a cross section through an airbag unit in the region of a carrier element 2, which has an opening 20.
  • a gas bag 3 On one side of the carrier element 2, i.e. In addition to the one surface 21 of the carrier element 2, a gas bag 3 is arranged, which is indicated in FIG. 1 a in the inflated state.
  • a section 32 of the gas bag 3 is guided through the opening 20 in the carrier element 2 to the other side of the carrier element 2 and extends there next to the other surface 22 of the carrier element 2.
  • a holding element 1 in the form of a holding plate is inserted , which engages behind the edge of the opening 20 in the carrier element 2 and thereby positively secures the said gas bag section 32 against slipping through the opening 20.
  • the holding element 1 lies against the edge of the opening 20 due to the forces acting during the inflation, so that the gas bag section 32 is clamped between the holding element 1 and the carrier element 2.
  • the gas bag 3 is positively fixed on the carrier element 2 in the region of the opening 20 by means of the holding element 1.
  • the holding element 1 is additionally provided with a throughflow opening 10 and the gas bag section 32 surrounding the holding element 1 is equipped with an inflow opening 30, both the inflow opening 30 and the throughflow opening 10 are aligned with the opening 20 in the carrier element 2.
  • a gas generator 4 in the form of a tubular gas generator with an outflow opening 40 arranged on its cylinder jacket surface is positioned in such a way that the outflow opening 40 of the gas generator 4, the inflow opening 30 of the gas bag 3, the throughflow opening 10 of the holding element 1 and the opening 20 of the carrier element 2 one behind the other are arranged and gas emerging from the gas generator 4 can flow into the gas bag 3.
  • the holding element 1 is positioned and received between the gas generator 4 and the carrier element 2.
  • FIG. 2b shows, in a further development of the exemplary embodiment from FIGS. 1b and 2a, a tubular element 6 arranged in the outflow opening 40 of the gas generator 4, which passes through the inflow opening 30 of the gas bag 3, the throughflow opening 10 holding element 1 and the opening 20 in protrudes into the airbag 3 with its gas outlet 60.
  • the tubular element 6 serves on the one hand for blowing gas into the gas bag 3 and on the other hand for aligning the assemblies 1, 2, 3 and 4 shown in FIG. 2b.
  • FIG. 2 c shows a modification of the exemplary embodiment from FIG. 2 b, in which the tubular element 6 is fixed to the holding element 1 and is aligned with the outflow opening 40 of the gas generator 4.
  • the holding element 1 and the tubular element 6 can also be formed in one piece, for example by the tubular element 6 being molded onto the holding element 1.
  • FIG. 3a shows a perspective view of an airbag module with an airbag 3, with a gas generator 4 for inflating the airbag 3 and a holding element 1 for fastening the airbag 3 to a carrier element 2 in an arrangement according to FIG. 2b, the carrier element 2 in Shape of a support plate is an integral part of a housing 5 accommodating the gas generator 4.
  • the holding element 1 is partially encircled by a gas bag section 32 projecting through the opening 20 in the carrier element 2 and is located on the side of the carrier element 2 facing away from the folded gas bag.
  • the housing 5 is so on the gas generator 4 equipped with the tubular element 6 placed that the tubular element 6 projects through the inflow opening 30 of the airbag 3, the throughflow opening 10 of the holding element 1 and the opening 20 of the carrier element 2 into the airbag 3.
  • two radially projecting flanges 51, 52 are formed on it, which are braced against one another by means of two screw connections, so that the housing 5 encloses the gas generator 4.
  • it can be spread apart in the region of the flanges 51, 52 before the screw connections are tightened.
  • FIG. 3b shows an exploded view of the airbag module from FIG. 3a.
  • the holding element 1 is inserted into the airbag 3 through an outflow opening 31, and the throughflow opening 10 of the holding element 1 is positioned congruently with the inflow opening 30 of the airbag 3.
  • the holding element 1 together with the surrounding gas bag section 32 is guided from outside the housing 5 through the opening 20 of the carrier element 2 and positioned on the other side of the carrier element 2 inside the housing 5 such that the inflow opening 30 of the gas bag 3 and the opening 20 of the carrier element 2 is aligned with the throughflow opening 10 of the holding element 1 and there is a flow connection.
  • the holding element has a thickness d and two edge lengths 1, 1 'and the carrier element has a slot length L and a slot width B.
  • the housing 5 is then placed on the gas generator 4 such that the tubular element 6 projects into the gas bag 3 through the inflow opening 30 of the gas bag 3, the throughflow opening 10 of the holding element 1 and the opening 20 of the carrier element 2.
  • FIG. 4 shows a representation of a carrier element 2 as an individual part.
  • the carrier element 2 has, as an opening 20, a slot with a width B and such a slot length L that the holding element 1, on the one hand, is guided through the slot 20 in a vertical orientation to the carrier element 2 can and, on the other hand, engages behind the edge of the slot 20 when aligned parallel to the slot 20.
  • the two lateral end sections 9 of the carrier element 2 are each connected to the base body of the carrier element 2 via webs and serve as bending sections.
  • FIG. 4a shows the carrier element 2 from FIG. 4 as part of an airbag unit. Thereafter, a holding device consisting of two clamps 7, 7 ′ engages around the gas generator 4, the clamps 7, 7 ′′ having openings 11 for receiving the carrier element 2.
  • the gas bag section 32 with the holding element 1 is passed through the opening 20 of the carrier element 2 and the carrier element 2 is placed on the gas generator 4 such that the tubular element 6 of the gas generator 4 projects into the gas bag 3 through the inflow opening 30 of the gas bag 3. Furthermore, the carrier element 2 is positioned such that the direction of extension of the gas generator 4 and the direction of extension of the elongate carrier element 2 run along a common axis.
  • the two clamps 7, 7 ' are placed on the gas generator 4 in such a way that they receive the carrier element 2 in the openings 11 in the region of a connecting web, the bending sections 9 coming out of the openings 11 protrude. By interlocking the bending sections 9, the carrier element 2 is fixed in its position in relation to the gas generator 4.
  • FIG. 4b shows the perspective illustration of an airbag module according to FIG. 4a, a receptacle 33 for the folded gas bag also being shown. This is located on the side of the carrier element 2 facing away from the gas generator 4.
  • FIG. 4c shows a cross section through the module from FIG. 4b.
  • the holding element 1 is evidently enclosed by a gas bag section 32 and is fixed in the vertical direction with respect to its plane of extension by the carrier element 2 and the gas generator 4 and in the horizontal direction by the tubular element 6.
  • the tubular element 6 protrudes into the gas bag 3.
  • FIG. 5 shows a two-part carrier element 2, consisting of two identically shaped T-shaped parts 8, 8 ', each of which has a cutout 12 or 12' at the free end of its middle leg 80, 80 '. If the two T-shaped parts 8, 8 'are joined together with their middle legs 80, 80' to form an H-shaped part, as shown in FIG. 5, the two middle legs 80, 80 'form a carrier element with one through the two cutouts 12, 12 'formed slot as an opening of the support member.
  • FIG. 6 An example of an airbag unit with a carrier element 2 according to FIG. 5 is shown in FIG. 6.
  • the holding element 1 is in turn inserted into a gas bag section 32 and, together with the folded gas bag 3 and packed in a receptacle 33, is placed on the tubular element 6 arranged on the outflow opening 40 of the gas generator 4 and the gas generator 4.
  • the two parts 8, 8 'forming the carrier element are pushed onto the gas generator 4 in the direction of extension (axial direction) of the gas generator 4 such that the cutouts 12, 12' are positioned as shown in FIG. 5 such that an opening of the carrier element is formed which passes through the tubular element 6 and is arranged behind the holding element 1.
  • FIG. 7 shows a section through an airbag module, in which, in a development of the previous exemplary embodiments, a stabilizing element 90 is provided for positioning the holding element 1.
  • the stabilizing element 90 is arranged in the airbag module in such a way that it is positioned between the holding element 1 (with gas bag section 32) and the outer wall of the gas generator 4 and is supported on the carrier element 2.
  • FIG. 8 shows a further embodiment of an airbag module with a carrier element 2 forming part of a housing 5, the housing 5 being designed such that both the gas bag 3 and the gas generator 4 are accommodated in the housing and the carrier element 2 is used to hold the Separates the gas generator 4 provided chamber from the storage space 14 provided for receiving the gas bag 3 and formed by a receiving device 13 of the housing 5.
  • a tubular element 6 is designed as a component of the holding element 1 and projects through an opening 20 of the carrier element 2 into the gas bag 3, which is arranged in the storage space 14.
  • FIGS. 9a, 9b and 9c show a section of an airbag module with a housing 5 and a gas generator 4.
  • the housing 5 serves to receive the folded gas bag 3.
  • the side of the housing 5 pointing towards the gas generator 4 is designed as a carrier element 2 with a slot-shaped opening 20.
  • a section 32 of the gas bag 3 is fastened to the carrier element 2 with the aid of a holding element 1 in accordance with the principle described in the previous exemplary embodiments.
  • the holding element element 1 is located on the inside of the gas bag 3 and is passed through the slit-shaped opening 20 of the carrier element 2 in a first orientation and then brought into a second orientation such that the gas bag 3 is fixed to the carrier element 2.
  • a tubular element 6 is guided through the holding element 1 and the gas bag 3 in the region of an inflow opening of the gas bag 3.
  • the tubular element 6 can at the same time also serve as a diffuser and be given a configuration corresponding to the desired inflow conditions.
  • the gas generator 4 is fixed to the housing 5 in the embodiment shown in FIGS. 9a, 9b and 9c via two fastening elements 550, 800.
  • the fastening element 550 provided in the rear end of the gas generator 4 opposite the outflow opening 40 of the gas generator 4 is formed in one piece with the housing 5.
  • This fastening element 550 is designed in the form of a ring through which the tubular gas generator 4 can be passed.
  • a stop region 41 of the gas generator 4 having a larger diameter than the ring prevents the gas generator 4 from slipping out of the annular fastening element 550.
  • the gas generator 4 On its other side, which has the outflow opening 40, the gas generator 4 is held on the housing 5 by a further fastening element 800.
  • the fastening element 800 is a separate part which is pushed onto the gas generator 4 in the direction X along the axis of the gas generator 4.
  • the fastening element 800 has engagement elements 801, 802 which engage under correspondingly designed receptacles 501, 502 of the housing 5.
  • the engagement elements 801, 802 engage under the receptacle 501, 502 and fix the fastening element element 800 on the housing 5.
  • the fastening element 800 is fixed to the gas generator by means of a washer 811, which is attached to a thread of the gas generator, with a nut 810.
  • the gas generator 4 is thus clamped between the stop element 41 formed in the rear region of the gas generator 4 and the nut 810 between the two fastening elements 550, 800.
  • the fastening element 800 also serves to conduct gas emerging from the outflow opening 40 of the gas generator 4 into the tubular element 6.
  • the fastening element 800 surrounds the front part of the gas generator 4 and thus also the outflow openings 40 of the gas generator 4. This surrounds a closed chamber the outflow openings 40 of the gas generator 4 are formed, which open into the gas bag 3 via the tubular element 6.
  • FIGS. 9a and 9b The airbag module of FIGS. 9a and 9b is shown in an exploded view in FIG. 9c.
  • the area 32 of the gas bag 3 can be passed through the slit-shaped opening 20 of the carrier element 2 of the housing 5.
  • the holding element 1 is guided perpendicularly to the carrier element 2 through the slot 20. Thereafter, the holding element 1 is brought into a position parallel to the carrier element 2 and the airbag 3 is thus fixed on the housing 5.
  • the tubular element 6 is inserted through the inflow opening 10 of the holding element 1 and the gas bag 3. Subsequently, the separate fastening element 800 is brought into engagement with the lower region of the tubular element 6 such that it engages with its protruding engagement elements 801, 802 engages under the receptacles 501, 502 of the housing 5.
  • the gas generator is then passed through the annular fastening element 550, which is formed in one piece with the housing 5, and the separate fastening element 800 until it strikes the fastening element 550 in its stop region 41.
  • the separate holding element 800 is pressed onto the gas generator 4 in such a way that a tight chamber is formed around the outflow openings 40 of the gas generator 4, which opens into the gas bag 3 via the tubular element 6.
  • the separate fastening element 800 is fixed on the housing 5 by the engagement of the engagement elements 801, 802 under the receptacles 501, 502.
  • FIGS. 10a, 10b and 10c A further embodiment of an airbag module is shown in FIGS. 10a, 10b and 10c.
  • a housing 5 in turn serves to accommodate an airbag 3, which is fixed to the housing 5 with the aid of a holding element 1 which is guided through a slot-shaped opening 20 in the carrier element 2.
  • a gas generator 4 is fixed at its rear end via an annular fastening element 550 which is formed in one piece with the housing 5.
  • the attachment of the front end of the gas generator 4, which has the outflow openings 40 of the gas generator 4 now differs from the manner described above.
  • a further, clamp-shaped element 540 is formed in one piece with the housing 5.
  • a fastening element 840 can be introduced into this clamp-shaped element 540, which sealingly surrounds the front region of the gas generator in such a way that a chamber for the gas flow of the gas flowing out of the outflow openings 40 of the gas generator 4 is again formed in the gas bag 3 via the tubular element 6 ,
  • the gas generator 4 is connected to the fastening element 840 via a nut 810 and a washer 811 attached.
  • the fastening element 840 is conical in parts of its outer area.
  • the clamp-shaped element 540 has an opposite taper.
  • the gas generator is therefore clamped between the rear clamp-shaped element 550 and the front clamp-shaped element 540 of the housing due to the conical jamming with the fastening element 840, which is held over the screw connection.
  • the gas generator 4 is thus reliably fixed on the housing 5.
  • FIGS. 11a and 11b A representation of a further airbag module is shown in FIGS. 11a and 11b.
  • a housing 5 is again provided for receiving the gas bag 3, the gas bag 3 being connected to the housing 5 via a holding part 1 which is fixed to the carrier element 2 in the manner described.
  • the holding part 1 has a tubular element 16 which is formed in one piece and which serves to introduce a gas stream from a gas generator 4 into the gas bag 3.
  • the integrally molded tubular region 16 can also be designed in the form of a diffuser.
  • the gas generator 4 is fixed on the housing 5 here by means of a separate clamp 860, which is connected to the housing via screw connections 861, 862.
  • the clamp 860 seals an outflow opening of the gas generator 4 located at the bottom.
  • the outflow opening of the gas generator pointing in the direction of the tubular region 16 remains free. The gases therefore emerge exclusively through the opening mentioned last Gas generator off and get into the gas bag 3 via the tubular region 16 of the holding element 1.
  • FIGS. 12a and 12b A further embodiment of the fastening principle of FIGS. 11a and 11b is shown in FIGS. 12a and 12b.
  • a gas bag 3 is in turn fixed to the housing 5 via a holding element 1 having a tubular region 16 on the carrier element 2.
  • a gas generator 4 is fixed to the housing 5 by means of a clamp 58 formed in one piece with the housing 5.
  • the clamp 58 has two regions that can be spread apart and can be clamped against one another via a screw connection 581 in such a way that the gas generator 4 is fixed.
  • This clamp 58 also seals only an outflow opening of the gas generator 4 located at the bottom, an additional sealing plug 583 being provided here.
  • the path of the gases into the gas bag 3 corresponds to that described for FIGS. 11a and 11b.
  • FIGS. 13a and 13b show a further embodiment of an airbag module in which an airbag 3 is fixed in a housing 5 in the manner already described many times with a holding element 1.
  • the housing 5 has a recess for receiving the gas generator 4, which receives it up to half its cross section.
  • the gas generator 4 is fastened via a clamp 58 which is formed in one piece with the housing 5.
  • the clamp 58 can also be designed as a separate component.
  • a threaded attachment 580 is provided on the clamp 58 and serves to receive a threaded screw 582.
  • the threaded screw 582 presses against an area of the gas generator 4 and engages in particular in an outflow opening of the gas generator 4.
  • the gas generator is first axially fixed and the outflow opening is closed.
  • the gas generator 4 is displaced radially in the direction of the holding element 1 and braced against the clamp 58.
  • the gas bag 3 is clamped with the holding element 1 between the gas generator 4 and the carrier element 2.
  • FIGS. 14 to 19 different possibilities for fixing the holding element 1 on the inside of the gas bag 3 are discussed.
  • the drawings each show perspective views of the inside of the gas bag.
  • the bold, also dashed line always represents the holding element 1, whereas thin dashed lines represent seams.
  • FIG. 14 shows a fabric pocket for fixing the holding element 1 on the inside of the gas bag 3.
  • the fabric pocket has a fabric part 300 sewn onto the inside of the gas bag 3, which is somewhat larger in its dimensions than the holding element 1 to be inserted.
  • the edges of the fabric part 300 which protrude when the holding element 1 is inserted are attached to the side by means of a seam 310 on three sides Airbag 3 is sewn. No seam is provided on one side 320 and the fabric pocket thus formed is open. Through this open side 320, the holding element 1 can be inserted into the fabric pocket thus formed.
  • An opening 10 for the gas to flow through from a gas generator into the interior of the gas bag is provided both in the fabric of the gas bag 3 and in the fabric 300 forming the pocket and the holding element 1 itself.
  • FIG. 15 A second embodiment for forming a fabric pocket for receiving the holding element 1 is shown in FIG. 15.
  • the seams 310 are designed such that the opposite sides 320 of the fabric parts 300 have no seams. This creates two pocket-shaped areas that open towards each other.
  • the fabric parts 300 each cover about a third of the holding element 1, so that the middle third of the holding element 1 is not covered with a fabric part.
  • FIG. 16 Another embodiment is shown in FIG. 16. Two fabric parts 300 and 300 'are arranged one above the other, the upper fabric part 300 having larger edge lengths than the fabric part 300' underneath.
  • the lower fabric part 300 ' is sewn to the gas bag 3 with three seams 310' in such a way that a pocket which is open on one longitudinal side is produced. This pocket is dimensioned again so that the holding element 1 can be fully inserted.
  • the larger fabric part 300 is placed over the lower fabric part 300 'and provided with a seam 310 such that it is also open on a transverse side. However, the opening of the upper pocket created in this way is opposite to the opening of the lower pocket. The holding element 1 inserted into the lower pocket is thus secured against slipping out.
  • FIG. 17 shows a further pocket which can be used to fix the holding element 1 inside the gas bag 3.
  • a fabric part 300 which has larger dimensions than the holding part 1, is sewn onto the gas bag 3.
  • the fabric part 300 is closed on all four sides by means of seams 310 and has a slot 330 in its central region, which is used to insert the holding part 1 into the pocket thus created.
  • a fabric web 300 which is somewhat larger than the holding element 1, is provided with a seam 320 on three of its sides. On the still open long side, the seam is continued up to about a third, so that only about two thirds of the length of the holding part of the resulting pocket is open. As a result, the holding part 1 can be inserted into the pocket.
  • a tab 350 is provided which is sewn over the resulting pocket and which is provided in the region of the pocket opening.
  • the flap is only sewn to the gas bag 3 in two areas and is open on its long sides.
  • FIG. 19 shows a further embodiment for fixing the holding element 1 to the gas bag 3.
  • the fabric 300 forming the pocket for receiving the holding element 1 is closed on three sides with a seam 310.
  • Two tabs 350 are sewn across the pocket.
  • the tabs 350 are sewn to the gas bag 3 only at their end regions and are accordingly open on their long sides 360.
  • the holding element 1 can thus be easily inserted into the pocket formed from the fabric 300 and is secured against slipping out by the tabs 350.

Landscapes

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

Abstract

L'invention concerne une unité de sac gonflable de sécurité composée d'un sac de gaz (3), d'un élément support plat (2) faisant face sur un côté (21) au sac de gaz (3), et présentant une ouverture (20) destinée à la fixation du sac de gaz (3) sur l'élément support (2), et d'un élément de maintien (1) interagissant avec l'élément support (2) pour la fixation du sac de gaz (3) sur ledit élément support. Une section (32) du sac de gaz (3) s'étend au travers de l'ouverture (20) de l'élément support (2), vers l'autre côté de l'élément support (2), et y est maintenue face au côté (22) de l'élément support (2) par l'élément de maintien (1). Les dimensions de l'ouverture (20) de l'élément support (2) et de l'élément de maintien (1) sont adaptées les unes aux autres de manière que l'élément de maintien (1) peut être guidé au travers de l'ouverture (20) dans une première orientation spatiale et qu'une zone marginale de l'ouverture (20) empêche le passage de l'élément de maintien (1) dans au moins une deuxième orientation spatiale.
EP03722276A 2002-04-05 2003-04-04 Unite de sac gonflable de securite comportant un element de maintien et un element support destine a la fixation du sac de gaz Withdrawn EP1492687A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10216217A DE10216217A1 (de) 2002-04-05 2002-04-05 Airbageinheit
DE10216217 2002-04-05
PCT/DE2003/001222 WO2003084784A1 (fr) 2002-04-05 2003-04-04 Unite de sac gonflable de securite comportant un element de maintien et un element support destine a la fixation du sac de gaz

Publications (1)

Publication Number Publication Date
EP1492687A1 true EP1492687A1 (fr) 2005-01-05

Family

ID=28458764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03722276A Withdrawn EP1492687A1 (fr) 2002-04-05 2003-04-04 Unite de sac gonflable de securite comportant un element de maintien et un element support destine a la fixation du sac de gaz

Country Status (5)

Country Link
US (1) US20050225058A1 (fr)
EP (1) EP1492687A1 (fr)
JP (1) JP2005528267A (fr)
DE (1) DE10216217A1 (fr)
WO (1) WO2003084784A1 (fr)

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DE102005004286A1 (de) * 2005-01-28 2006-08-10 Zf Friedrichshafen Ag Airbagbaueinheit
DE102006045245A1 (de) * 2006-09-26 2008-04-03 Trw Automotive Gmbh Halteelement und Seitengassackmodul
EP1923276B1 (fr) * 2006-11-15 2008-09-10 Delphi Technologies, Inc. Modul de sac gonflable
DE102007053101B4 (de) * 2007-11-07 2024-05-16 Zf Automotive Germany Gmbh Gasgenerator und Baugruppe mit einem Gasgenerator
DE102008039181A1 (de) * 2008-08-20 2010-03-04 Takata-Petri Ag Airbagmodul mit einem Gassack und einem an einem Modulgehäuse befestigbaren Rohrgasgenerator
CN102556138B (zh) * 2008-10-30 2014-08-20 宝钜儿童用品香港股份有限公司 婴儿车
DE102008056946A1 (de) * 2008-11-07 2010-05-12 Takata-Petri Ag Airbagmodul mit einem Gassack und einem an einem Modulgehäuse befestigbaren Rohrgasgenerator
DE102009018168A1 (de) * 2009-04-20 2010-11-04 Takata-Petri Ag Gassackmodul für ein Fahrzeuginsassen-Rückhaltesystem und Verfahren zu dessen Herstellung
DE102010052782A1 (de) * 2010-11-30 2012-05-31 Trw Automotive Gmbh Fahrzeuginsassenrückhaltesystem für ein Fahrzeug und Dichtungselement
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Also Published As

Publication number Publication date
WO2003084784A1 (fr) 2003-10-16
US20050225058A1 (en) 2005-10-13
JP2005528267A (ja) 2005-09-22
DE10216217A1 (de) 2003-10-23

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