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
  • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
  • B60R21/216—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member comprising tether means for limitation of cover motion during deployment
• • 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
  • B60R2021/161—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by additional means for controlling deployment trajectory
• • 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

Definitions

• the invention relates to an airbag arrangement in a dashboard body of a motor vehicle, said cushion being positioned, for example, to frontally protect an occupant of the vehicle installed next to the driver of the vehicle.
• the dashboard body is provided with a window which is closed at its upper face by a flap, and a firing channel fixed on the underside of the board body while surrounding the window.
• the firing channel has an upper face that matches the domed shape of the dashboard body, and a generally flat underside to which is attached a standardized type of cushioning module.
• the air bag When the air bag inflates, it crosses the firing channel to bear against the underside of the flap, causing the opening of the flap. The cushion then passes through the window of the dashboard body to deploy in the passenger compartment of the vehicle to protect the occupants.
• the window has a rectangular outline, and the flap is hinged around the transverse edge of this window which is furthest forward with respect to the direction of travel of the vehicle, that is to say which is closest to the windshield.
• FIRE I LLE OF REM PLACEM ENT (RULE 26) debris from the shutter towards the occupants of the vehicle, which is likely to create injuries to the occupants.
• the forces appearing during the opening are important because of the speed of deployment that is desired for the safety cushion, so that the mechanical strength of the restraining links is generally insufficient.
• the links tend to tear away from the body of the dashboard, which causes the degradation of the flap, and thereby presents a risk of debris projection to the occupants of the vehicle.
• the subject of the invention is an arrangement of an airbag in an instrument panel, comprising a plank body incorporating a flap body delimited by a generally rectangular contour forming two lateral edges and a transverse rear edge. and a front transverse edge around which the flap pivots to open on inflation of the safety cushion, a firing channel having an upper face by which it is attached to the underside of the board body and a flat bottom face for receiving an airbag module, the firing channel surrounding the outline of the flap body and having at least two lateral flanks along the side edges of the flap body, this arrangement comprising at least one retaining link
• FIRE I LLE OF REM PLACEM ENT (RULE 26) attached to the shutter body and comprising a portion protruding from a lateral edge of the shutter body and passing through a corresponding lateral flank of the firing channel to be retained by this side flank, and an additional reinforcing member attached to the upper face of the flap channel. firing right of the retaining link portion passing through this lateral flank.
• the retaining link is anchored in the firing channel while being able to be put in place by the upper face of this firing channel prior to the introduction of the additional reinforcing member, which ensures the a simple assembly and an optimal hold of the anchoring of the retaining link in the fixed part that constitutes the dashboard.
• the invention also relates to an arrangement as defined above, in which the retaining link passes through the lateral flank at a notch or notch that this lateral flank comprises, this notch or notch opening into the upper face of the duct. firing, so as to allow the passage of the retaining link through the upper face of the firing channel prior to the attachment of this channel to the board body.
• the invention also relates to an arrangement as defined above, wherein the additional reinforcing member comprises a lug engaging in an upper portion of the notch or notch of the lateral flank.
• the invention also relates to an arrangement as defined above, wherein the retaining link comprises at least two portions or strands protruding from the same side edge of the flap body, each transversally passing through the lateral flank of the firing channel for forming a loop surrounding a portion of this lateral flank.
• the invention also relates to an arrangement such
• SUBSTITUTE SHEET (RULE 26) as defined above, wherein the firing channel is made by molding, and wherein the additional reinforcing member is integrally molded with all or part of the firing channel protruding laterally from a side flank of the firing channel for be detached and / or folded to bring it to the right of the retaining link portion passing through this lateral flank.
• FIG 1 is an overview of the firing channel of the arrangement according to the invention.
• Figure 2 is a partial view of the firing channel of the arrangement according to the invention in the region of the additional reinforcing member.
• the idea underlying the invention is to improve the anchoring of the retaining link by fixing it to a lateral flank of the firing channel and by providing an additional reinforcing member attached to the upper face of the screw channel. to the anchor region of the restraint link in this channel.
• the firing channel of the arrangement according to the invention which is marked by 1 comprises an upper wall 2 and a central body 3 which are rigidly secured to one another.
• This channel 1 is secured to a lower face of a dashboard body not shown by ultrasonic welding, or by a similar method, the upper face 4 of the upper wall 2 having a shape matching the curve of the body of the board. edge, to be attached to it.
• the upper face 4 of this upper wall 2 may for this purpose be provided with ribs or reliefs of small thickness not shown facilitating its fixing and positioning.
• This firing channel 1 constitutes a frame delimiting a central rectangular opening which is here closed
• the shutter is constituted by this reinforcing plate 6 and the shutter body, not shown, which is constituted by a portion of the dashboard body, delimited for example by a rectangular precut on the underside of the dashboard body.
• the assembly consisting of the firing channel 1, and the reinforcing plate 6 is attached and fixed in the same operation to the underside of the dashboard body not shown to form the dashboard of the vehicle.
• An airbag module (not shown) is then attached to a lower face of the firing channel 1, which for this purpose is generally flat, unlike the upper face 4.
• flanks of the channel body 3 which each extend perpendicular to the top wall 2. These flanks more particularly comprise a front transverse flank 7 with respect to the direction A d advancement of the vehicle, a rear transverse flank 8, opposite to the flank 7, and a left lateral flank 9 and a right lateral flank 11.
• the channel body 3 further comprises seven bases, which extend radially towards the outside of the frame delimited by the flanks 7, 8, 9 and 11, while having the same height as these flanks in a direction normal to the upper face. 4.
• Each base comprises a flat bottom face having a bore for receiving a fastening pin of the safety cushion module, these different bases together forming all or part of the lower face of the firing channel.
• SUBSTITUTE SHEET (RULE 26) Flanges marked 17 and 18 extend radially from the rear transverse edge 8.
• two bases 16 and 19 extend radially, respectively from the right lateral flank 11 and from the left lateral flank 9.
• the reinforcing plate 6 comprises at its upper face a set of ribs protruding from this face, these ribs being marked by 21, and it carries at its upper face a link 22 held between these ribs 21 so as to be secured to the flap, this link 22 being secured to the firing channel 1.
• this link 22 is secured to the body 3 of the firing channel 1 in the region of the transverse flank before 7 to form a hinge for opening the flap by pivoting about a transverse axis before AT coinciding substantially with the front transverse edge the shutter body not shown.
• the link 22 thus forms three loops 23, 24, 25 protruding from the front transverse edge of the plate 6 to respectively surround the bases 12, 13, 14 while being located under the upper wall 2 of the firing channel.
• the front transverse flank 7 comprises six notches oriented perpendicular to the surface 4 and which open into the lower edge of the front transverse flank 7, the strands of the loops 23, 24 and 25 being engaged in these notches.
• the attachment of the link 22 to the firing channel in the region of the front transverse flank 7 is ensured by first engaging this link between the corresponding ribs 21 to hold it in position while forming the loops 23 to 25 which protrude from the transverse edge. before the plate 6.
• the plate 6 with the link 22 that it carries is then engaged in the central opening, by the lower face of the firing channel 1 by placing the loops 23-25 around the bases 12-
• the link 22 comprises two other loops 27 and 28 which protrude laterally from the reinforcing plate 6 and which are each fixed to the lateral parts of the body 3 of the firing channel 1, respectively surrounding the lateral base 16 and the base lateral 19.
• the loops 27, 28 are held folded in the central region of the upper face of the reinforcing plate 6 when the reinforcing plate 6 and the loops 23-25 are installed. After which the side loops 27 and 28 are deployed to surround respectively the bases 16 and 19.
• the upper edge of the sidewall 9 has for this purpose two notches or indentations marked 31 and 32, which are placed on either side of the base 19 along this edge.
• the upper wall 2 has two slots 33 and 34 each extending transversely, that is to say parallel to the direction AT.
• the notch 31 thus opens in the slot 33, and likewise, the notch 32 opens into the slot 34, each of these slots extending transversely from the sidewall 9 to the outer edge of the upper wall 2.
• the installation of the loop 27 thus consists in deploying it laterally, from the central part of the plate 6, to engage each of its two strands in the corresponding slot 33, 34, so as to pass this
• FIRE I LLE OF REM PLACEM ENT (RULE 26) loop around the generally square upper wall portion 2 which is situated between these slots 33, 34, to place this loop on the lower face of the wall 4, around the base 19. As can be seen in FIG. strands of this loop 27 are crossed one on the other in the region separating the lateral flank 6 from the left lateral edge of the plate 6.
• a local reinforcing member marked by 36, is engaged in the slot being folded back into it.
• This member 36 comprises a generally rectangular main wall 37 intended to cover most of the slot 33, and its end is provided with a lug 38 intended to engage in the notch 31 so as to lock in the slot. ci to ensure maintenance in a satisfactory position.
• the assembly constituted by the plate 6 as well as the firing channel 1 with its reinforcing members is fixed to the underside of the dashboard body, the localized reinforcing members 36 being then themselves attached to the dashboard body.
• slots 33 and 34 they can be formed directly during the molding of the upper wall 2, but they can also be closed by bridges which are then broken or cut
• FIG. 1 can in fact be integrally molded with the rest of the upper wall 2, and then cut to be separated from this wall 2 before being put into place in the slot 33.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=43014461

Family Applications (1)

Country Status (4)

Families Citing this family (1)

Family Cites Families (13)

• 2010
  • 2010-05-17 FR FR1053793A patent/FR2959978B1/fr not_active Expired - Fee Related
• 2011
  • 2011-05-16 CN CN201180024506.0A patent/CN102947139B/zh not_active Expired - Fee Related
  • 2011-05-16 WO PCT/EP2011/057892 patent/WO2011144572A1/fr active Application Filing
  • 2011-05-16 EP EP11721483A patent/EP2571729A1/de not_active Withdrawn

Non-Patent Citations (1)

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