WO2020166243A1 - Airbag device - Google Patents

Airbag device Download PDF

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Publication number
WO2020166243A1
WO2020166243A1 PCT/JP2020/000608 JP2020000608W WO2020166243A1 WO 2020166243 A1 WO2020166243 A1 WO 2020166243A1 JP 2020000608 W JP2020000608 W JP 2020000608W WO 2020166243 A1 WO2020166243 A1 WO 2020166243A1
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WO
WIPO (PCT)
Prior art keywords
retainer
airbag
module cover
side wall
insertion hole
Prior art date
Application number
PCT/JP2020/000608
Other languages
French (fr)
Japanese (ja)
Inventor
雅将 上原
Original Assignee
Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ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.)
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Application filed by Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社 filed Critical Ｊｏｙｓｏｎ Ｓａｆｅｔｙ Ｓｙｓｔｅｍｓ Ｊａｐａｎ株式会社
Publication of WO2020166243A1 publication Critical patent/WO2020166243A1/en

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    • 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
    • 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

Definitions

  • the present invention relates to an airbag device provided in a vehicle, and more particularly to a connection structure between a module cover of an airbag device and a retainer.
  • Patent Document 1 As an airbag device for a driver's seat, a device provided with an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover for covering the airbag are widely used. It is used.
  • a connection structure of the module cover and the retainer in Patent Document 1, a side wall portion (mounting piece portion) of the module cover (cover body) is provided along an inner side surface of a standing wall portion provided on the retainer (base plate), and the side wall is provided.
  • the support plate along the inner surface of the mounting part (mounting piece), sandwich the mounting piece of the module cover (cover body) between this support plate and the standing wall, and use the support plate as a retainer (base plate).
  • the fixed structure is described.
  • the structure of Patent Document 1 requires a support plate separate from the retainer.
  • Patent Document 2 discloses an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover attached to the retainer so as to cover the airbag.
  • the retainer includes a main plate portion and a peripheral wall erected from a peripheral edge of the main plate portion, and the module cover is connected to the occupant portion covering the occupant side of the airbag and the airbag portion. And a side wall portion that covers the side of the retainer, and the extension piece extending from the side wall portion of the module cover is inserted into an insertion hole provided in the main plate portion of the retainer.
  • An object of the present invention is to provide an airbag device that can easily connect a module cover and a retainer.
  • An airbag device of the present invention includes an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover attached to the retainer so as to cover the airbag.
  • the retainer includes a main plate portion and a peripheral wall standing upright from a peripheral edge of the main plate portion, and the module cover is connected to the canopy portion covering the occupant side of the airbag and the canopy portion, A locking piece having a side wall that covers the side of the airbag, the side wall having an opening or a recess, and the peripheral wall of the retainer having a claw that enters the opening or the recess.
  • an insertion hole is provided in the main plate portion of the retainer, an extension piece extends from the side wall portion of the module cover, and the extension hole is provided in the insertion hole. It is characterized in that the piece is inserted.
  • the locking piece has a locking piece vertical portion extending from the peripheral wall, and the claw portion is provided on the locking piece vertical portion.
  • the main plate portion of the retainer is provided with an inclined surface portion that is inclined toward the occupant side from the center side of the main plate portion toward the insertion hole.
  • the tip of the extension piece projects from the insertion hole when the claw portion contacts the lower edge of the side wall portion.
  • the insertion hole is provided near the locking piece.
  • the lower edge portion of the side wall portion is an inclined surface that guides the claw portion to the outer peripheral surface of the side wall portion when the module cover is mounted on the retainer.
  • the extension piece extends from the side wall portion of the module cover, and the extension piece moves along the inner surface of the peripheral wall of the retainer and is inserted into the insertion hole, so that the work of mounting the module cover on the retainer can be performed. It's easy. Further, the extension piece is inserted into the insertion hole of the retainer, and the side wall portion is prevented from moving to the center side of the airbag device.
  • FIG. 3 is an exploded perspective view of the airbag device according to the embodiment.
  • FIG. 3 is a perspective view of the airbag device according to the embodiment.
  • FIG. 3 is a sectional view taken along line III-III in FIG. 2.
  • FIG. 4 is a sectional view taken along line IV-IV of FIG. 2. It is sectional drawing explaining another embodiment.
  • FIG. 3 is a schematic cross-sectional view of the airbag device according to the embodiment. It is sectional drawing explaining another embodiment.
  • the airbag device 1 includes an airbag 2, an inflator 3 for inflating the airbag 2, and a retainer 10 to which the airbag 2 and the inflator 3 are mounted via a mounting ring 6.
  • a module cover 20 and the like mounted on the occupant side of the retainer 10 so as to cover the folded body of the airbag 2 are provided.
  • the retainer 10 is made of metal such as iron, and the module cover 20 is made of synthetic resin.
  • the airbag device 1 is installed on a hub portion of a steering wheel (not shown).
  • the retainer 10 has a main plate portion 11 arranged facing the hub portion of the steering wheel.
  • An inflator attachment port 12 into which the inflator 3 is fitted is provided near the center of the main plate portion 11.
  • a bolt insertion hole 13 (FIGS. 1 and 2) through which a bolt for fixing the airbag 2 and the inflator 3 to the main plate portion 11 is inserted is provided in the peripheral portion of the inflator mounting port 12.
  • a coil spring unit 14 (FIGS. 1 and 2) for connecting the airbag device 1 to an airbag support member (not shown) is provided so as to project from the main plate portion 11 to the side opposite to the occupant.
  • the coil spring units 14 are arranged in three circumferential positions that surround the inflator mounting opening 12.
  • a peripheral wall 15 is erected from the peripheral edge of the main plate portion 11 to the passenger side. As shown in FIGS. 1 to 3, the peripheral wall 15 is provided with a locking piece 17 as a locking portion for locking the module cover 20. A plurality of locking pieces 17 are provided at intervals in the circumferential direction of the retainer 10.
  • the locking piece 17 includes a locking piece vertical portion 17a extending in the standing direction of the peripheral wall 15 and a claw portion 17b folded from the locking piece vertical portion 17a to the center side of the retainer 10. Have and.
  • an insertion hole 18 for inserting the extension piece 28 of the module cover 20 is provided in the outermost peripheral edge portion of the main plate portion 11.
  • a plurality of insertion holes 18 are provided along the peripheral wall 15 at intervals in the circumferential direction of the retainer 10. The insertion hole 18 is located near the locking piece 17.
  • a sloped portion 18a that rises toward the occupant as it approaches the insertion hole 18 from the center side of the main plate portion 11.
  • the module cover 20 includes a canopy portion 21 that covers the occupant side of the folded body of the airbag 2, a side wall portion 22 protruding from the canopy portion 21 to the occupant side, and a side wall portion 22. Also has an overhanging portion 23 that projects to the outer peripheral side.
  • the side wall 22 has a frame shape that surrounds the entire circumference of the folded body of the airbag 2.
  • the side wall 22 is provided with an opening 27 into which the claw 17b of the locking piece 17 is inserted.
  • the openings 27 are provided in the same number as the locking pieces 17. Instead of the opening 27, a recess for locking the claw 17b may be provided.
  • Extending piece 28 extends from side wall 22 in the direction opposite to the occupant.
  • the extension piece 28 has a size to be inserted into the insertion hole 18.
  • the same number of extension pieces 28 as the insertion holes 18 are provided.
  • the airbag 2 and the inflator 3 are attached to the retainer 10 via the attachment ring 6.
  • the module cover 20 is mounted on the retainer 10 so as to cover the airbag 2
  • the extension piece 28 is inserted into the insertion hole 18, and the claw portion 17b is locked in the opening 27 as shown in FIGS.
  • the side wall portion 22 is along the inner peripheral surface of the peripheral wall 15, and the peripheral wall 15 prevents the side wall portion 22 from moving outward. Further, the extension piece 28 is inserted into the opening 18.
  • the main plate portion 11 is provided with the slope portion 18a on the center side of the insertion hole 18, and the tip end of the slope portion 18a on the insertion hole 18 side is the side wall portion 22. Abut. This prevents the side wall 22 from moving toward the center of the retainer 10 and prevents the claw 17b from coming off the opening 27.
  • the lower end of the extension piece 28 is pushed from the insertion hole 18 to the occupant when the claw portion 17b of the locking piece 17 is in contact with the lower edge of the side wall portion 22.
  • It is preferably configured so as to slightly project in the direction. With this configuration, it is possible to visually confirm that the circumferential alignment between the module cover 20 and the retainer 10 is correct. Further, thereafter, when the module cover 20 is deeply covered with the retainer 10, the extending piece 28 and the insertion hole 18 are engaged with each other, so that the side wall portion 22 does not move in the circumferential direction, and the module cover 20 does not move. The mounting workability of is improved.
  • the air bag device 1 thus configured is attached to the steering hub by the coil unit 14.
  • the inflator 3 operates, the airbag 2 tears the module cover 20 and inflates and deploys, and the occupant is restrained.
  • the retainer 10 is provided with the slope 18a, but the slope 18a may be omitted as shown in FIG.
  • the lower edge of the side wall portion 22 of the module cover 20 may be a slope portion S.
  • the inclined surface portion S is an inclined surface that faces the outer peripheral side and the occupant side.
  • Airbag device 2 Airbag 3 Inflator 10 Retainer 11 Main plate part 15 Peripheral wall 17 Engaging piece 17b Claw part 18 Insert hole 18a Slope part 20 Module cover 21 Canopy part 22 Sidewall part 27 Opening 28 Extension piece

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

Abstract

Provided is an airbag device capable of easily connecting a module cover and a retainer. An airbag device 1 includes: an airbag 2; an inflator 3 for inflating the airbag 2; a retainer 10 to which the airbag 2 and the inflator 3 are attached through an attachment ring 6; and a module cover 20 attached to the occupant side of the retainer 10 to cover the folded body of the airbag 2. An extended piece 28 is inserted into an insertion hole 18, and a hook portion 17b of a lock piece 17 of a retainer peripheral wall 15 is locked in an opening 27 in a module cover side wall portion 22. The insertion hole 18 is located near the lock piece 17.

Description

エアバッグ装置Airbag device
　本発明は、車両に設けられるエアバッグ装置に係り、特にエアバッグ装置のモジュールカバーとリテーナとの連結構造に関する。 The present invention relates to an airbag device provided in a vehicle, and more particularly to a connection structure between a module cover of an airbag device and a retainer.
　運転席用エアバッグ装置として、エアバッグと、該エアバッグを膨出させるためのインフレータと、該エアバッグ及びインフレータが取り付けられたリテーナと、該エアバッグを覆うモジュールカバーとを備えたものが広く用いられている。このモジュールカバーとリテーナとの連結構造として、特許文献１には、リテーナ（ベースプレート）に設けた立壁部の内側面にモジュールカバー（カバー体）の側壁部（取付片部）を沿わせ、該側壁部（取付片部）の内側面にサポートプレートを沿わせ、このサポートプレートと立壁部との間でモジュールカバー（カバー体）の該取付片部を挟持すると共に、サポートプレートをリテーナ（ベースプレート）に固定した構造が記載されている。この特許文献１の構造では、リテーナとは別体のサポートプレートが必要である。 As an airbag device for a driver's seat, a device provided with an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover for covering the airbag are widely used. It is used. As a connection structure of the module cover and the retainer, in Patent Document 1, a side wall portion (mounting piece portion) of the module cover (cover body) is provided along an inner side surface of a standing wall portion provided on the retainer (base plate), and the side wall is provided. The support plate along the inner surface of the mounting part (mounting piece), sandwich the mounting piece of the module cover (cover body) between this support plate and the standing wall, and use the support plate as a retainer (base plate). The fixed structure is described. The structure of Patent Document 1 requires a support plate separate from the retainer.
　特許文献２には、エアバッグと、該エアバッグを膨張させるためのインフレータと、該エアバッグ及びインフレータが取り付けられたリテーナと、該エアバッグを覆うように該リテーナに取り付けられたモジュールカバーとを備え、該リテーナは、主板部と、該主板部の周縁から起立した周壁とを備えており、該モジュールカバーは、該エアバッグの乗員側を覆う天蓋部と、該天蓋部に連なり、エアバッグの側方を覆う側壁部とを有しており、該リテーナの該主板部に設けられた差込孔に該モジュールカバーの該側壁部から延出した延出片が挿入され、該延出片の延出方向の先端側に設けられた爪部が該差込孔の縁部に係合しているエアバッグ装置が記載されている。 Patent Document 2 discloses an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover attached to the retainer so as to cover the airbag. The retainer includes a main plate portion and a peripheral wall erected from a peripheral edge of the main plate portion, and the module cover is connected to the occupant portion covering the occupant side of the airbag and the airbag portion. And a side wall portion that covers the side of the retainer, and the extension piece extending from the side wall portion of the module cover is inserted into an insertion hole provided in the main plate portion of the retainer. There is described an airbag device in which a claw portion provided on the front end side in the extending direction of is engaged with an edge portion of the insertion hole.
特開平９－７１２０３号公報JP-A-9-71203 特開２０１７－３９３７９号公報JP, 2017-39379, A
　本発明は、モジュールカバーとリテーナとの連結を容易に行うことができるエアバッグ装置を提供することを目的とする。 An object of the present invention is to provide an airbag device that can easily connect a module cover and a retainer.
　本発明のエアバッグ装置は、エアバッグと、該エアバッグを膨張させるためのインフレータと、該エアバッグ及びインフレータが取り付けられたリテーナと、該エアバッグを覆うように該リテーナに取り付けられたモジュールカバーとを備え、該リテーナは、主板部と、該主板部の周縁から起立した周壁とを備えており、該モジュールカバーは、該エアバッグの乗員側を覆う天蓋部と、該天蓋部に連なり、エアバッグの側方を覆う側壁部とを有しており、該側壁部に開口又は凹部が設けられており、前記リテーナの前記周壁に、該開口又は凹部に入り込む爪部を有した係止片が設けられているエアバッグ装置において、前記リテーナの前記主板部に差込孔が設けられており、前記モジュールカバーの前記側壁部から延出片が延出しており、該差込孔に該延出片が挿入されていることを特徴とする。 An airbag device of the present invention includes an airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover attached to the retainer so as to cover the airbag. The retainer includes a main plate portion and a peripheral wall standing upright from a peripheral edge of the main plate portion, and the module cover is connected to the canopy portion covering the occupant side of the airbag and the canopy portion, A locking piece having a side wall that covers the side of the airbag, the side wall having an opening or a recess, and the peripheral wall of the retainer having a claw that enters the opening or the recess. In the airbag device provided with, an insertion hole is provided in the main plate portion of the retainer, an extension piece extends from the side wall portion of the module cover, and the extension hole is provided in the insertion hole. It is characterized in that the piece is inserted.
　本発明の一態様では、前記係止片は、前記周壁から延出した係止片縦部を有しており、該係止片縦部に前記爪部が設けられている。 In one aspect of the present invention, the locking piece has a locking piece vertical portion extending from the peripheral wall, and the claw portion is provided on the locking piece vertical portion.
　本発明の一態様では、前記リテーナの前記主板部に、主板部中央側から前記差込孔に近づくほど乗員側となるように傾斜した斜面部が設けられている。 In one aspect of the present invention, the main plate portion of the retainer is provided with an inclined surface portion that is inclined toward the occupant side from the center side of the main plate portion toward the insertion hole.
　本発明の一態様では、前記モジュールカバーを前記リテーナに装着するに際して、前記爪部が前記側壁部の下縁に当接したときに前記延出片の先端が前記差込孔から突出する。 In one aspect of the present invention, when the module cover is attached to the retainer, the tip of the extension piece projects from the insertion hole when the claw portion contacts the lower edge of the side wall portion.
　本発明の一態様では、前記差込孔は前記係止片の近傍に設けられている。 In one aspect of the present invention, the insertion hole is provided near the locking piece.
　本発明の一態様では、前記側壁部の下縁部は、前記モジュールカバーを前記リテーナに装着する際に前記爪部を前記側壁部の外周面へ案内する傾斜面になっている。 In one aspect of the present invention, the lower edge portion of the side wall portion is an inclined surface that guides the claw portion to the outer peripheral surface of the side wall portion when the module cover is mounted on the retainer.
　本発明では、モジュールカバー側壁部から延出片が延出しており、この延出片がリテーナ周壁の内面に沿って移動して差込孔に差し込まれるので、モジュールカバーをリテーナに装着する作業が容易である。また、この延出片がリテーナの差込孔に差し込まれており、側壁部がエアバッグ装置の中央側に移動することが阻止される。 In the present invention, the extension piece extends from the side wall portion of the module cover, and the extension piece moves along the inner surface of the peripheral wall of the retainer and is inserted into the insertion hole, so that the work of mounting the module cover on the retainer can be performed. It's easy. Further, the extension piece is inserted into the insertion hole of the retainer, and the side wall portion is prevented from moving to the center side of the airbag device.
実施の形態に係るエアバッグ装置の分解斜視図である。FIG. 3 is an exploded perspective view of the airbag device according to the embodiment. 実施の形態に係るエアバッグ装置の斜視図である。FIG. 3 is a perspective view of the airbag device according to the embodiment. 図２のIII－III線断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2. 図２のIV－IV線断面図である。FIG. 4 is a sectional view taken along line IV-IV of FIG. 2. 別の実施の形態を説明する断面図である。It is sectional drawing explaining another embodiment. 実施の形態に係るエアバッグ装置の概略的な断面図である。FIG. 3 is a schematic cross-sectional view of the airbag device according to the embodiment. 別の実施の形態を説明する断面図である。It is sectional drawing explaining another embodiment.
　以下に、図面を参照して本発明の実施の形態について説明する。 An embodiment of the present invention will be described below with reference to the drawings.
　このエアバッグ装置１は、図６の通り、エアバッグ２と、該エアバッグ２を膨張させるためのインフレータ３と、該エアバッグ２及びインフレータ３が取付リング６を介して取り付けられたリテーナ１０と、エアバッグ２の折畳体を覆うように該リテーナ１０の乗員側に装着されたモジュールカバー２０等を備えている。リテーナ１０は鉄などの金属製であり、モジュールカバー２０は合成樹脂製である。このエアバッグ装置１はステアリング（図示略）のハブ部に設置される。 As shown in FIG. 6, the airbag device 1 includes an airbag 2, an inflator 3 for inflating the airbag 2, and a retainer 10 to which the airbag 2 and the inflator 3 are mounted via a mounting ring 6. A module cover 20 and the like mounted on the occupant side of the retainer 10 so as to cover the folded body of the airbag 2 are provided. The retainer 10 is made of metal such as iron, and the module cover 20 is made of synthetic resin. The airbag device 1 is installed on a hub portion of a steering wheel (not shown).
　リテーナ１０は、ステアリングのハブ部に対面して配置される主板部１１を有している。主板部１１の中央付近には、インフレータ３が嵌装されるインフレータ取付口１２が設けられている。このインフレータ取付口１２の周縁部には、エアバッグ２及びインフレータ３を該主板部１１に固定するためのボルトが挿通されるボルト挿通孔１３（図１，２）が設けられている。この実施の形態では、エアバッグ装置１をエアバッグ支承部材（図示略）に連結するためのコイルバネユニット１４（図１，２）が主板部１１から反乗員側に突設されている。コイルバネユニット１４は、インフレータ取付口１２を取り巻く周方向の３等分位置に配置されている。 The retainer 10 has a main plate portion 11 arranged facing the hub portion of the steering wheel. An inflator attachment port 12 into which the inflator 3 is fitted is provided near the center of the main plate portion 11. A bolt insertion hole 13 (FIGS. 1 and 2) through which a bolt for fixing the airbag 2 and the inflator 3 to the main plate portion 11 is inserted is provided in the peripheral portion of the inflator mounting port 12. In this embodiment, a coil spring unit 14 (FIGS. 1 and 2) for connecting the airbag device 1 to an airbag support member (not shown) is provided so as to project from the main plate portion 11 to the side opposite to the occupant. The coil spring units 14 are arranged in three circumferential positions that surround the inflator mounting opening 12.
　主板部１１の周縁から乗員側に周壁１５が立設されている。図１～３の通り、周壁１５には、モジュールカバー２０を係止する係止部としての係止片１７が設けられている。係止片１７は、リテーナ１０の周回方向に間隔をおいて複数個設けられている。 A peripheral wall 15 is erected from the peripheral edge of the main plate portion 11 to the passenger side. As shown in FIGS. 1 to 3, the peripheral wall 15 is provided with a locking piece 17 as a locking portion for locking the module cover 20. A plurality of locking pieces 17 are provided at intervals in the circumferential direction of the retainer 10.
図３の通り、係止片１７は、周壁１５の起立方向にそのまま延在する係止片縦部１７ａと、該係止片縦部１７ａからリテーナ１０の中央側に折り立てられた爪部１７ｂとを有する。 As shown in FIG. 3, the locking piece 17 includes a locking piece vertical portion 17a extending in the standing direction of the peripheral wall 15 and a claw portion 17b folded from the locking piece vertical portion 17a to the center side of the retainer 10. Have and.
　図１，２，４，５の通り、主板部１１の最外周縁部には、モジュールカバー２０の延出片２８を挿入するための差込孔１８が設けられている。差込孔１８は、周壁１５に沿って、リテーナ１０の周回方向に間隔をおいて複数個設けられている。差込孔１８は係止片１７の近傍に位置している。 As shown in FIGS. 1, 2, 4, and 5, an insertion hole 18 for inserting the extension piece 28 of the module cover 20 is provided in the outermost peripheral edge portion of the main plate portion 11. A plurality of insertion holes 18 are provided along the peripheral wall 15 at intervals in the circumferential direction of the retainer 10. The insertion hole 18 is located near the locking piece 17.
　この実施の形態では、主板部１１の差込孔１８近傍には、主板部１１の中央側から差込孔１８に近づくほど乗員側に立ち上がる斜面部１８ａが設けられている。 In this embodiment, in the vicinity of the insertion hole 18 of the main plate portion 11, there is provided a sloped portion 18a that rises toward the occupant as it approaches the insertion hole 18 from the center side of the main plate portion 11.
　この実施の形態では、モジュールカバー２０は、エアバッグ２の折畳体の乗員側を覆う天蓋部２１と、該天蓋部２１から反乗員側に突設された側壁部２２と、側壁部２２よりも外周側に張り出す張出部２３とを有している。側壁部２２は、エアバッグ２の折畳体の全周を取り囲む枠状となっている。 In this embodiment, the module cover 20 includes a canopy portion 21 that covers the occupant side of the folded body of the airbag 2, a side wall portion 22 protruding from the canopy portion 21 to the occupant side, and a side wall portion 22. Also has an overhanging portion 23 that projects to the outer peripheral side. The side wall 22 has a frame shape that surrounds the entire circumference of the folded body of the airbag 2.
　側壁部２２には、係止片１７の爪部１７ｂが係入される開口２７が設けられている。開口２７は係止片１７と同数個設けられている。なお、開口２７の代わりに、爪部１７ｂが係止される凹部が設けられてもよい。 The side wall 22 is provided with an opening 27 into which the claw 17b of the locking piece 17 is inserted. The openings 27 are provided in the same number as the locking pieces 17. Instead of the opening 27, a recess for locking the claw 17b may be provided.
　側壁部２２から延出片２８が反乗員方向に延設されている。延出片２８は差込孔１８に差し込まれる大きさを有している。延出片２８は差込孔１８と同数個設けられている。 Extending piece 28 extends from side wall 22 in the direction opposite to the occupant. The extension piece 28 has a size to be inserted into the insertion hole 18. The same number of extension pieces 28 as the insertion holes 18 are provided.
　エアバッグ装置１を組み立てる場合、エアバッグ２及びインフレータ３を取付リング６を介してリテーナ１０に取り付ける。その後、エアバッグ２を覆うようにモジュールカバー２０をリテーナ１０に被装し、図３，４の通り、延出片２８を差込孔１８に差し込み、爪部１７ｂを開口２７に係止させる。 When assembling the airbag device 1, the airbag 2 and the inflator 3 are attached to the retainer 10 via the attachment ring 6. After that, the module cover 20 is mounted on the retainer 10 so as to cover the airbag 2, the extension piece 28 is inserted into the insertion hole 18, and the claw portion 17b is locked in the opening 27 as shown in FIGS.
　モジュールカバー２０をリテーナ１０に取り付けた状態にあっては、側壁部２２は周壁１５の内周面に沿っており、側壁部２２が外方に移動することが周壁１５によって阻止される。また、延出片２８が開口１８に差し込まれている。 When the module cover 20 is attached to the retainer 10, the side wall portion 22 is along the inner peripheral surface of the peripheral wall 15, and the peripheral wall 15 prevents the side wall portion 22 from moving outward. Further, the extension piece 28 is inserted into the opening 18.
　特に、この実施の形態では、図４の通り、差込孔１８よりも中央側において主板部１１に斜面部１８ａが設けられており、斜面部１８ａの差込孔１８側の先端が側壁部２２に当接する。これにより、リテーナ１０中央方向への側壁部２２の移動が阻止され、爪部１７ｂが開口２７から外れることが防止される。 In particular, in this embodiment, as shown in FIG. 4, the main plate portion 11 is provided with the slope portion 18a on the center side of the insertion hole 18, and the tip end of the slope portion 18a on the insertion hole 18 side is the side wall portion 22. Abut. This prevents the side wall 22 from moving toward the center of the retainer 10 and prevents the claw 17b from coming off the opening 27.
　なお、モジュールカバー２０をリテーナ１０に装着するに際して、係止片１７の爪部１７ｂが側壁部２２の下縁に当接する状態のときに、延出片２８の下端が差込孔１８から反乗員方向に若干突出するように構成されていることが好ましい。このように構成されていると、モジュールカバー２０とリテーナ１０との周方向の位置合わせが正しいことを目視確認することができる。また、その後、モジュールカバー２０をリテーナ１０に深く被せるときに、延出片２８と差込孔１８とが係合しているので、側壁部２２が周方向にずれ動くことがなく、モジュールカバー２０の装着作業性が向上する。 When the module cover 20 is attached to the retainer 10, the lower end of the extension piece 28 is pushed from the insertion hole 18 to the occupant when the claw portion 17b of the locking piece 17 is in contact with the lower edge of the side wall portion 22. It is preferably configured so as to slightly project in the direction. With this configuration, it is possible to visually confirm that the circumferential alignment between the module cover 20 and the retainer 10 is correct. Further, thereafter, when the module cover 20 is deeply covered with the retainer 10, the extending piece 28 and the insertion hole 18 are engaged with each other, so that the side wall portion 22 does not move in the circumferential direction, and the module cover 20 does not move. The mounting workability of is improved.
　このように構成されたエアバッグ装置１は、コイルユニット１４によってステアリングのハブ部に取り付けられる。自動車の衝突時には、インフレータ３が作動し、エアバッグ２がモジュールカバー２０を開裂させて膨張展開し、乗員が拘束される。 The air bag device 1 thus configured is attached to the steering hub by the coil unit 14. When a vehicle collides, the inflator 3 operates, the airbag 2 tears the module cover 20 and inflates and deploys, and the occupant is restrained.
　上記実施の形態では、リテーナ１０に斜面部１８ａが設けられているが、図５のように斜面部１８ａを省略してもよい。 In the above embodiment, the retainer 10 is provided with the slope 18a, but the slope 18a may be omitted as shown in FIG.
　図７に示すように、モジュールカバー２０の側壁部２２の下縁が斜面部Ｓになっていてもよい。斜面部Ｓは、外周側及び反乗員側を向く傾斜面である。モジュールカバー２０をリテーナ１０に被装する際、斜面部Ｓに沿って爪部１７ｂが側壁部２２の外周面へ案内される。そのため、モジュールカバー２０のリテーナ１０への取り付けが容易になる。 As shown in FIG. 7, the lower edge of the side wall portion 22 of the module cover 20 may be a slope portion S. The inclined surface portion S is an inclined surface that faces the outer peripheral side and the occupant side. When the module cover 20 is mounted on the retainer 10, the claw portion 17b is guided to the outer peripheral surface of the side wall portion 22 along the slope portion S. Therefore, the module cover 20 can be easily attached to the retainer 10.
　上記実施の形態は本発明の一例であり、本発明は図示以外の形態とされてもよい。 The above embodiment is an example of the present invention, and the present invention may take forms other than those shown in the drawings.
　本発明を特定の態様を用いて詳細に説明したが、本発明の意図と範囲を離れることなく様々な変更が可能であることは当業者に明らかである。
　本出願は、２０１９年２月１３日付で出願された日本特許出願２０１９－０２３６０９に基づいており、その全体が引用により援用される。 Although the invention has been described in detail using specific embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the invention.
This application is based on Japanese Patent Application 2019-023609 filed on Feb. 13, 2019, which is incorporated by reference in its entirety.
　１　エアバッグ装置
　２　エアバッグ
　３　インフレータ
　１０　リテーナ
　１１　主板部
　１５　周壁
　１７　係止片
　１７ｂ　爪部
　１８　差込孔
　１８ａ　斜面部
　２０　モジュールカバー
　２１　天蓋部
　２２　側壁部
　２７　開口
　２８　延出片 1 Airbag device 2 Airbag 3 Inflator 10 Retainer 11 Main plate part 15 Peripheral wall 17 Engaging piece 17b Claw part 18 Insert hole 18a Slope part 20 Module cover 21 Canopy part 22 Sidewall part 27 Opening 28 Extension piece

Claims (6)

  1. 　エアバッグと、該エアバッグを膨張させるためのインフレータと、該エアバッグ及びインフレータが取り付けられたリテーナと、該エアバッグを覆うように該リテーナに取り付けられたモジュールカバーとを備え、
    　該リテーナは、主板部と、該主板部の周縁から起立した周壁とを備えており、
    　該モジュールカバーは、該エアバッグの乗員側を覆う天蓋部と、該天蓋部に連なり、エアバッグの側方を覆う側壁部とを有しており、
    　該側壁部に開口又は凹部が設けられており、
    　前記リテーナの前記周壁に、該開口又は凹部に入り込む爪部を有した係止片が設けられているエアバッグ装置において、
    　前記リテーナの前記主板部に差込孔が設けられており、
    　前記モジュールカバーの前記側壁部から延出片が延出しており、
    　該差込孔に該延出片が挿入されていることを特徴とするエアバッグ装置。     An airbag, an inflator for inflating the airbag, a retainer to which the airbag and the inflator are attached, and a module cover attached to the retainer so as to cover the airbag,
    The retainer includes a main plate portion and a peripheral wall erected from a peripheral edge of the main plate portion,
    The module cover has a canopy portion that covers the occupant side of the airbag, and a side wall portion that is continuous with the canopy portion and that covers the side of the airbag.
    An opening or a recess is provided in the side wall,
    An airbag device in which a locking piece having a claw portion that enters the opening or the recess is provided on the peripheral wall of the retainer,
    An insertion hole is provided in the main plate portion of the retainer,
    An extension piece extends from the side wall portion of the module cover,
    An airbag device, wherein the extension piece is inserted into the insertion hole.
  2. 　前記係止片は、前記周壁から延出した係止片縦部を有しており、該係止片縦部に前記爪部が設けられていることを特徴とする請求項１のエアバッグ装置。 The airbag device according to claim 1, wherein the locking piece has a locking piece vertical portion extending from the peripheral wall, and the claw portion is provided on the locking piece vertical portion. ..
  3. 　前記リテーナの前記主板部に、主板部中央側から前記差込孔に近づくほど乗員側となるように傾斜した斜面部が設けられていることを特徴とする請求項１又は２のエアバッグ装置。 The airbag device according to claim 1 or 2, wherein the main plate portion of the retainer is provided with a sloped portion that is inclined so as to be closer to an occupant as it approaches the insertion hole from the center side of the main plate portion.
  4. 　前記モジュールカバーを前記リテーナに装着するに際して、前記爪部が前記側壁部の下縁に当接したときに前記延出片の先端が前記差込孔から突出することを特徴とする請求項１～３のいずれかのエアバッグ装置。 2. When mounting the module cover on the retainer, the tip of the extension piece projects from the insertion hole when the claw portion comes into contact with the lower edge of the side wall portion. The airbag device according to any one of 3 above.
  5. 　前記差込孔は前記係止片の近傍に設けられていることを特徴とする請求項１～４のいずれかのエアバッグ装置。 The airbag device according to any one of claims 1 to 4, wherein the insertion hole is provided in the vicinity of the locking piece.
  6. 　前記側壁部の下縁部は、前記モジュールカバーを前記リテーナに装着する際に前記爪部を前記側壁部の外周面へ案内する傾斜面になっていることを特徴とする請求項１～５のいずれかのエアバッグ装置。 6. The lower edge portion of the side wall portion is an inclined surface that guides the claw portion to the outer peripheral surface of the side wall portion when the module cover is mounted on the retainer. Either airbag device.
PCT/JP2020/000608 2019-02-13 2020-01-10 Airbag device WO2020166243A1 (en)

Applications Claiming Priority (2)

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JP2019-023609 2019-02-13
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001146142A (en) * 1999-11-19 2001-05-29 Tokai Rika Co Ltd Air bag device
JP2004106822A (en) * 2002-07-25 2004-04-08 Ashimori Ind Co Ltd Air bag device
JP2010069937A (en) * 2008-09-16 2010-04-02 Toyoda Gosei Co Ltd Steering wheel with airbag device
JP2017039379A (en) * 2015-08-19 2017-02-23 タカタ株式会社 Airbag device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001146142A (en) * 1999-11-19 2001-05-29 Tokai Rika Co Ltd Air bag device
JP2004106822A (en) * 2002-07-25 2004-04-08 Ashimori Ind Co Ltd Air bag device
JP2010069937A (en) * 2008-09-16 2010-04-02 Toyoda Gosei Co Ltd Steering wheel with airbag device
JP2017039379A (en) * 2015-08-19 2017-02-23 タカタ株式会社 Airbag device

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