WO2014017284A1 - Dispositif de coussin de sécurité gonflable - Google Patents

Dispositif de coussin de sécurité gonflable Download PDF

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Publication number
WO2014017284A1
WO2014017284A1 PCT/JP2013/068651 JP2013068651W WO2014017284A1 WO 2014017284 A1 WO2014017284 A1 WO 2014017284A1 JP 2013068651 W JP2013068651 W JP 2013068651W WO 2014017284 A1 WO2014017284 A1 WO 2014017284A1
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WO
WIPO (PCT)
Prior art keywords
airbag
piece
retainer
opening
module cover
Prior art date
Application number
PCT/JP2013/068651
Other languages
English (en)
Japanese (ja)
Inventor
一朗 雨森
Original Assignee
タカタ株式会社
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 タカタ株式会社 filed Critical タカタ株式会社
Publication of WO2014017284A1 publication Critical patent/WO2014017284A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns

Definitions

  • the present invention relates to an airbag device provided in a vehicle, and more particularly, to a connection structure between a module cover and a retainer of the airbag device.
  • a wide variety of airbag devices include an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover that covers the airbag. It is used.
  • a connecting structure between the module cover and the retainer in Patent Document 1, an extension piece of the module cover is inserted into an opening provided in the retainer, and a claw portion of the extension piece is locked to an edge portion of the retainer opening. The structure made is described (FIG. 3 of patent document 1).
  • the direction of the force acting on the claw when the airbag is inflated is the direction in which the claw is separated from the edge of the retainer opening.
  • a mechanism for preventing the claw portion from being detached from the opening edge portion has to be strengthened or the height of the claw portion has to be increased.
  • An object of the present invention is to provide an airbag device having a simple structure and having a module cover firmly retained by a retainer even when the airbag is inflated.
  • An airbag apparatus includes an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover that covers the airbag.
  • an airbag device in which an extension piece extending from the module cover is inserted and locked in an opening provided in the hook, a claw protruding toward the center side of the retainer at the distal end side of the extension piece
  • the extension piece is raised by the stopper piece that is raised from the edge of the retainer at the center side of the opening and engaged with the claw, and is opposite to the stopper piece across the opening.
  • a support piece along the extending piece is provided on the side.
  • the stopper piece is plastically deformed to engage the stopper piece with the claw portion.
  • An airbag device includes an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover that covers the airbag.
  • the cover includes a canopy portion that covers the passenger side of the airbag, and a side wall portion that is continuous with the canopy portion and covers the side of the airbag, and an opening is provided in the side wall portion, and the retainer
  • the retainer In the airbag device in which an upright piece along the outer side surface of the side wall portion is provided on the peripheral portion of the side wall portion, and an engaging portion that enters the opening is provided on the upright piece, the retainer is provided with the module cover.
  • a restraining piece that rises along the inner surface of the side wall portion is provided, and a bent portion that enters the opening and restrains the side wall portion is provided at an upper portion of the restraining piece. It is.
  • the restraining piece is plastically deformed so as to restrain the side wall portion after the locking portion is engaged with the opening.
  • the 12 o'clock side of the module cover may be connected to the retainer by the structure of the first invention, and the 6 o'clock side may be connected to the retainer by the structure of the second invention.
  • the extension piece of the module cover is inserted into the opening of the retainer, and the stopper piece is engaged with the claw portion of the extension piece from the center side of the retainer.
  • a force acts in a direction in which the airbag device is pressed against the stopper piece against the extension piece, so that the extension piece is firmly locked.
  • the stopper piece By providing a support piece on the opposite side of the stopper piece across the opening and supporting the extended piece by this support piece, the stopper piece can be firmly engaged with the claw portion.
  • the stopper piece When the extension piece is inserted into the opening and then the stopper piece is plastically deformed to engage the stopper piece with the claw portion, the stopper piece can be engaged with the base end side of the claw portion.
  • the locking portion of the standing piece of the retainer enters from the outside of the side wall portion with respect to the opening of the side wall portion of the module cover.
  • the lower end of the side wall is restrained by the restraining piece from the center side of the retainer of the side wall. Therefore, since the force pressed against the restraining piece acts on the lower end portion of the module cover side wall portion when the air bag device is operated, the side wall portion is firmly locked.
  • the side wall can be firmly restrained by plastically deforming the restraining piece and entering the opening to restrain the side wall.
  • FIG. 4 is a sectional view taken along line IV-IV in FIG. 1.
  • FIG. 5 is an exploded view of the structure of FIG. 4.
  • FIG. 6 is a sectional view taken along line VI-VI in FIG. 1.
  • FIG. 7 is an exploded view of the structure of FIG. 6. It is a schematic sectional drawing at the time of airbag expansion
  • the 12 o'clock side and the 6 o'clock side of the driver's airbag indicate the upper side and the lower side when the steering wheel is viewed from the front (from the direction of extension of the steering shaft to the passenger), and 3 o'clock. Side shows right side, 9 o'clock side shows left side.
  • the airbag device 1 includes an airbag 2 (FIG. 8), an inflator 3 (FIG. 8) for inflating the airbag 2, a retainer 10 to which the airbag 2 and the inflator 3 are attached, an airbag A module cover 40 and the like mounted on the occupant side of the retainer 10 are provided so as to cover the two folded bodies.
  • the retainer 10 is made of metal such as iron, and the module cover 40 is made of synthetic resin.
  • the retainer 10 has a main plate portion 11 that is disposed facing the occupant side of the hub portion of the steering 5 as clearly shown in FIG.
  • An inflator opening 12 into which the inflator 3 is fitted is provided in the vicinity of the center of the main plate part 11, and the airbag 2 and the inflator 3 are fixed to the main plate part 11 at the peripheral part of the inflator opening 12.
  • a bolt insertion hole 13 is provided through which a bolt (not shown) is inserted.
  • connecting pieces 14 for connecting the airbag device 1 to the steering hub portion are projected downward from FIG. 1 from the 3 o'clock side and the 9 o'clock side of the main plate portion 11, respectively.
  • the module cover 40 includes a canopy portion 41 that covers the occupant side of the folded body of the airbag 2 and a side wall portion 42 that protrudes from the canopy portion 41 toward the occupant side.
  • the side wall portion 42 has a frame shape surrounding the entire circumference of the folded body of the airbag 2.
  • a first mounting portion 20 for attaching the 12 o'clock side of the module cover 40 to the retainer 10 is provided on the 12 o'clock side of the retainer 10, and the 6 o'clock side of the module cover 40 is attached to the retainer 10 on the 6 o'clock side.
  • a second attachment portion 30 is provided.
  • the first mounting portion 20 has the configuration of the first invention
  • the second mounting portion 30 has the configuration of the second invention.
  • the support piece 22 is erected from the edge portion of the retainer main plate portion 11 on the 12 o'clock side on the side opposite to the occupant (opposite to the occupant).
  • the support piece 22 continuously extends from the left end side to the right end side of the 12 o'clock side edge portion of the retainer main plate portion 11.
  • a plurality (four in this embodiment) of openings 21 are provided in the main plate portion 11 at intervals along the support piece 22.
  • the support piece 22 stands from the edge of the opening 21 on the retainer outer edge side.
  • a stopper piece 23 is erected from the edge of each opening 21 on the center side of the retainer.
  • the extended piece 43 is erected on the side opposite to the occupant from the edge on the side opposite to the occupant of the side wall 42 on the 12:00 side of the module cover 40.
  • a claw portion 44 is provided on the distal end side of the extension piece 43 on the side opposite to the occupant.
  • the claw portion 44 protrudes from the extending piece 43 toward the center side (inflator 3 side) of the retainer 10.
  • a locking surface 44 a is formed in the middle of the extending direction of the extending piece 43.
  • the locking surface 44 a is a surface on the passenger side of the claw portion 44.
  • the locking surface 44 a is substantially perpendicular to the standing direction of the extending piece 43.
  • the tip of the stopper piece 23 is engaged with the corner where the locking surface 44a and the extending piece 43 intersect, as shown in FIG.
  • the support piece 22 and the extension piece 43 overlap.
  • the stopper piece 23 is kept perpendicular to the main plate surface 11 and the extension piece 43 is opened to the opening 21 as shown in FIG. as shown by the arrow a 1 is inserted from the passenger side. Then, by pressing as tilted to the extending piece 43 side to plastically deform as the stopper pieces 23 arrows A 2 (performing a so-called caulking). Thereby, the 1st attaching part 20 shown in FIG. 4 is formed.
  • the upright piece 31 is erected on the occupant side from the edge portion of the main plate portion 11 on the 6 o'clock side.
  • the standing piece 31 is provided with a locking portion 33 that protrudes toward the center of the retainer 10.
  • the locking portion 33 has a quadrant shell shape cut and raised from the standing piece 31.
  • An opening 32 is formed in the standing piece 31 by this cutting and raising.
  • the protruding height is large, so that the base end side (main plate part 11 side) of the standing piece 31 is.
  • a restraint piece 34 is erected on the occupant side from the main plate portion 11.
  • the front end side of the restraining piece 34 is a bent portion 34a that is bent toward the standing piece 31 side.
  • An opening 45 into which the locking portion 33 is inserted is provided on the side of the side wall portion 42 of the module cover 40 at 6 o'clock.
  • a bridge portion 46 is formed between the opening 45 and the edge of the side wall portion 42.
  • the bent portion 34 a of the restraining piece 34 enters the opening 45 and presses the bridge portion 46 from the opening 45 side.
  • the restraint piece 34 is placed in an inclined standing state inclined to the side away from the standing piece 31, and the arrow
  • the side wall part 42 is moved along the inner side surface of the upright piece 31 as shown in B 1 , and the locking part 33 is inserted into the opening 45.
  • the restraint piece 34 is raised rotated in the arrow B 2 direction by plastically deforming (caulking), allowed to enter the bent portion 34a into the opening 45,
  • the bridge portion 46 is pressed from the opening 45 side.
  • the airbag device 1 configured in this way is attached to the central portion of the steering 5 as shown in FIG.
  • the airbag 2 When the inflator 3 performs gas ejection operation in the event of a vehicle emergency, the airbag 2 is inflated, the canopy 41 of the module cover 40 is cleaved, and the airbag 2 is deployed forward of the upper body of the occupant P as shown in FIG. to bound.
  • module cover canopy portion 41 is cleaved, as arrow U 1 of 12 o'clock side of the canopy portion 2, out opening upward as viewed from the occupant, 6 o'clock side of the canopy portion 41 downwardly as indicated by arrow D 1 Open.
  • the bridge portion 46 is also deformed so as to extend to the occupant side along the standing piece 31, the bridge portion 46 is engaged with the engaging portion 33 This prevents further deformation and movement.
  • both the first attachment portion and the second attachment portion may have the structure of the first invention, and both the first attachment portion and the second attachment portion may have the structure of the second invention.

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

Abstract

L'invention fournit un dispositif de coussin de sécurité gonflable qui présente une configuration simple, et dont le verrouillage d'un organe de retenue destiné à un couvercle de module, est solide y compris lors d'un déploiement de coussin de sécurité gonflable. La moitié supérieure du couvercle de module (40) est verrouillée sur l'organe de retenue (10) en insérant une pièce d'extension (43) possédant une partie onglet (44) dans une ouverture (21), et en assemblant par déformation plastique une pièce d'arrêt (23) sur une face de verrouillage (44a) de la partie onglet (44). La moitié inférieure est verrouillée sur l'organe de retenue (10) en assemblant une partie verrouillage (33) sur une ouverture (45), et en enfonçant une partie pont (46) à l'aide d'une partie courbe (34a) d'une pièce de restriction (34).
PCT/JP2013/068651 2012-07-23 2013-07-08 Dispositif de coussin de sécurité gonflable WO2014017284A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012162767A JP2014019395A (ja) 2012-07-23 2012-07-23 エアバッグ装置
JP2012-162767 2012-07-23

Publications (1)

Publication Number Publication Date
WO2014017284A1 true WO2014017284A1 (fr) 2014-01-30

Family

ID=49997100

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/068651 WO2014017284A1 (fr) 2012-07-23 2013-07-08 Dispositif de coussin de sécurité gonflable

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JP (1) JP2014019395A (fr)
WO (1) WO2014017284A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6535925B2 (ja) * 2015-06-23 2019-07-03 本田技研工業株式会社 エアバッグモジュール
JP2017039379A (ja) * 2015-08-19 2017-02-23 タカタ株式会社 エアバッグ装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752738A (ja) * 1993-08-20 1995-02-28 Nippon Plast Co Ltd ベースプレートとエアバッグカバーの連結構造
JPH07144596A (ja) * 1993-11-22 1995-06-06 Bridgestone Corp エアバッグ装置
WO2011144648A1 (fr) * 2010-05-18 2011-11-24 Takata-Petri Ag Système de sac gonflable pour un système de retenue d'occupants de véhicule

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752738A (ja) * 1993-08-20 1995-02-28 Nippon Plast Co Ltd ベースプレートとエアバッグカバーの連結構造
JPH07144596A (ja) * 1993-11-22 1995-06-06 Bridgestone Corp エアバッグ装置
WO2011144648A1 (fr) * 2010-05-18 2011-11-24 Takata-Petri Ag Système de sac gonflable pour un système de retenue d'occupants de véhicule

Also Published As

Publication number Publication date
JP2014019395A (ja) 2014-02-03

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