JPH05105018A - Air bag receiving cover - Google Patents

Air bag receiving cover

Info

Publication number
JPH05105018A
JPH05105018A JP3269392A JP26939291A JPH05105018A JP H05105018 A JPH05105018 A JP H05105018A JP 3269392 A JP3269392 A JP 3269392A JP 26939291 A JP26939291 A JP 26939291A JP H05105018 A JPH05105018 A JP H05105018A
Authority
JP
Japan
Prior art keywords
cover
air bag
tear
line
tear line
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.)
Pending
Application number
JP3269392A
Other languages
Japanese (ja)
Inventor
Yoshikazu Nakayama
芳和 中山
Takayasu Zushi
隆保 圖司
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 Corp
Original Assignee
Takata Corp
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 Corp filed Critical Takata Corp
Priority to JP3269392A priority Critical patent/JPH05105018A/en
Priority to KR1019920014009A priority patent/KR930007733A/en
Publication of JPH05105018A publication Critical patent/JPH05105018A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags

Landscapes

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

Abstract

PURPOSE:To unfold an air bag rapidly also largely sideways to the front of a passenger in an air bag receiving cover having a tear line extending on the inner surface by causing the tear line to reach the end line of the cover for expanding an opened surface to the end surface. CONSTITUTION:An air bag receiving cover is provided with a central tear line 2 and end tear lines 3, 4 for a burst. The central tear line 2 extends longitudinally in the central portion of the cover and the tear lines 3, 4 extend laterally to reach the end edges 1t of the cover. The tear lines 2, 3, 4 are formed with grooves 5 extending and recesses 6 provided at intervals in the grooves 5 respectively. The intervals between the recesses 6 are smaller in the vicinity of the central portion of the cover and provide the weakest portions. When expansion pressure is exerted to the air bag, the burst starts from the vicinity of the central portion of the weakest portion and expands quickly along the tear lines 2, 3, 4 to the end edges 1t so that the burst pressure is unfolded largely sideways of the cover.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は車両衝突時にその衝撃、
変形等を関知することにより、動作、膨張して展開する
エアバッグを収納するためのカバーに関するものであ
る。
The present invention relates to the impact of a vehicle collision,
The present invention relates to a cover for accommodating an airbag that operates, expands, and deploys by being aware of deformation and the like.

【0002】[0002]

【従来の技術】従来のカバーは、エアバッグ動作時にバ
ッグ収納用カバーが予定された線から開裂されるように
テアラインを設けている。このテアラインとしては、開
裂予定ラインの部分に溝を連続的又はミシン目状に半連
続的に形成したものがある。なお、溝の深さを間隔をお
いて深くすることもある。又、該カバーを硬質層と軟質
層との2層積層構造としたものにあっては、開裂予定線
に沿って硬質層にスリットを形成したものもある。
2. Description of the Related Art In a conventional cover, a tear line is provided so that the bag storage cover is torn from a predetermined line when the airbag is operated. As this tear line, there is one in which a groove is continuously or semi-continuously formed in a perforated shape in a portion of a line to be cleaved. The depth of the groove may be increased at intervals. In addition, in the case where the cover has a two-layer laminated structure of a hard layer and a soft layer, there is also one in which a slit is formed in the hard layer along the planned cleavage line.

【0003】[0003]

【発明が解決しようとする課題】上記従来のエアバッグ
収納用カバーにあっては、テアラインはカバーの端縁以
外の部分にのみ設けられている。このため、カバーの開
裂範囲が狭くなり、エアバッグが乗員正面に対して側方
向に展開しにくくなる可能性があり、そのための種々の
対策が必要となりコストアップを招いていた。
In the conventional air bag storage cover described above, the tear line is provided only at a portion other than the edge of the cover. For this reason, the opening range of the cover is narrowed, and the airbag may be difficult to deploy laterally with respect to the front of the occupant. Therefore, various countermeasures are required and the cost is increased.

【0004】[0004]

【課題を解決するための手段】本発明のエアバッグ収納
用カバーは、一色成形法により成形されたエアバッグ収
納用カバーであって、エアバッグ動作開始時に開裂を開
始させるためのテアラインが内面に延設されているエア
バッグ収納用カバーにおいて、該テアラインはカバーの
端縁にまで到達するように延設されていることを特徴と
するものである。
The airbag storage cover of the present invention is an airbag storage cover formed by a one-color molding method, and has a tear line on the inner surface for initiating tearing at the start of airbag operation. In the extended airbag storage cover, the tear line is extended so as to reach the edge of the cover.

【0005】[0005]

【作用】本発明のエアバッグ収納用カバーにあっては、
一旦カバーに開裂が開始されると、テアラインに沿って
開裂が端部に広がるようになる。このため、カバーが大
きく変形し、エアバッグが乗員正面に対して側方向にも
展開し易くなる。
In the air bag storage cover of the present invention,
Once the cover is cleaved, the cleft spreads along the tear line to the edges. For this reason, the cover is greatly deformed, and the airbag is easily deployed laterally with respect to the front of the occupant.

【0006】[0006]

【実施例】以下図面に示す実施例を参照しながら本発明
について更に詳細に説明する。
The present invention will be described in more detail with reference to the embodiments shown in the drawings.

【0007】第1図は本発明の実施例に係る一色成形法
により成形されたエアバッグ収納用カバーの底面図、第
2図は第1図のII−II線に沿う断面図、第3図は第2図
のIII-III 線に沿う断面図、第4図は第1,3図のIV−
IV線に沿う断面図、第5図は第1,3図のV−V線に沿
う断面図である。なお、第5図(a)は切断端面図であ
り、第5図(b)は切断断面図となっている。また、第
3,4,5図は拡大図となっている。
FIG. 1 is a bottom view of an air bag storage cover formed by a one-color molding method according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. Is a cross-sectional view taken along line III-III in FIG. 2, and FIG. 4 is IV- in FIGS.
FIG. 5 is a sectional view taken along line IV, and FIG. 5 is a sectional view taken along line VV in FIGS. Note that FIG. 5 (a) is a cut end view and FIG. 5 (b) is a cut sectional view. Also, FIGS. 3, 4, and 5 are enlarged views.

【0008】このカバー1は、略長方形状のものであ
り、エアバッグ動作時に開裂を開始させるためのテアラ
インが中央テアライン2及び端部テアライン3,4とし
て設けられている。中央テアライン2は、カバー1の中
央部分をカバー1の長手方向に延在されている。テアラ
イン3,4はカバー1の短手方向に延在しており、該カ
バー1の端部付近に沿って設けられている。なお、テア
ライン2とテアライン3,4とは連続するように設けら
れている。このテアライン3、4はカバー1の端縁1t
に達している。
The cover 1 has a substantially rectangular shape, and tear lines for starting tearing when the airbag is operated are provided as a central tear line 2 and end tear lines 3 and 4. The central tear line 2 extends in the longitudinal direction of the cover 1 at the central portion of the cover 1. The tear lines 3 and 4 extend in the lateral direction of the cover 1 and are provided along the vicinity of the end portion of the cover 1. The tear line 2 and the tear lines 3 and 4 are provided so as to be continuous. The tear lines 3 and 4 are the edge 1t of the cover 1.
Has reached.

【0009】これらテアライン2,3,4は連続して延
在する溝部5と、該溝部5に間隔を置いて深く穿設され
た凹部6とを備えている。第4図の如く、この溝部5は
三角形断面形状のものである。また、第5図の如く、凹
部6は、カバー1の裏面1aと垂直な側壁面6aと、こ
の側壁面6aの底部において三角形断面形状をなすよう
に形成された斜面部6bとを備えた五角形状のものであ
る。なお、この凹部6は、カバー1の底面視形状が六角
形のものであり、六角形の相対向する2個の頂点がテア
ライン2,3,4の中心線に沿って配置されるように形
成されている。
These tear lines 2, 3 and 4 are provided with a groove portion 5 extending continuously and a recess 6 deeply formed in the groove portion 5 at a distance. As shown in FIG. 4, the groove 5 has a triangular cross section. Further, as shown in FIG. 5, the concave portion 6 has a pentagonal shape including a side wall surface 6a perpendicular to the back surface 1a of the cover 1 and a sloped surface portion 6b formed in the bottom portion of the side wall surface 6a so as to have a triangular sectional shape. It is of a shape. The recess 6 has a hexagonal shape of the cover 1 when viewed from the bottom, and is formed so that two opposite vertices of the hexagon are arranged along the center lines of the tear lines 2, 3, and 4. Has been done.

【0010】中央テアライン2のうちカバー中央部(板
央部)にあっては、凹部6は隣接するもの同志の間隔を
小さくして密に形成されている。そして、この中央部か
ら離れてテアライン3,4に近づくに従って凹部6同志
の間隔が大きくなり、いわゆる疎らに設けられている。
In the central portion (plate central portion) of the central tear line 2, the concave portions 6 are densely formed with a small interval between adjacent ones. The distance between the concave portions 6 increases as the distance from the central portion approaches the tear lines 3 and 4, so that the concave portions 6 are provided sparsely.

【0011】テアライン3,4にあっては、凹部6同志
の間隔は互いにほぼ等しいものとなっているが、テアラ
イン2におけると同様にテアライン3,4の長手方向の
中央部付近を凹部6同志の間隔が小さいものとし、これ
から離れるに従って凹部6同志の間隔が大きくなるもの
としても良い。
In the tear lines 3 and 4, the intervals between the recesses 6 are substantially equal to each other. However, as in the tear line 2, the recesses 6 are located near the center of the tear lines 3 and 4 in the longitudinal direction. The spacing may be small, and the spacing between the recesses 6 may increase with increasing distance.

【0012】特に限定されるものではないが、本実施例
のカバー1の材質としては、例えばJIS−K7203
の曲げ弾性率が1000kg/cm2 以上の熱可塑性ポ
リマーが好適である。具体的には、オレフィン系、スチ
レン系、ポリエステル系、ポリウレタン系、塩化ビニル
系、ポリアミド系などの熱可塑性エラストマー及びポリ
オレフィン系軟質材料などが挙げられる。なお、リムウ
レタンにネットをインサートしたものも好適である。
The material of the cover 1 of this embodiment is not particularly limited, but may be JIS-K7203, for example.
A thermoplastic polymer having a flexural modulus of 1000 kg / cm 2 or more is preferable. Specific examples include olefin-based, styrene-based, polyester-based, polyurethane-based, vinyl chloride-based, polyamide-based and other thermoplastic elastomers, and polyolefin-based soft materials. A rim urethane with a net inserted therein is also suitable.

【0013】この様に構成されたカバー1にあっては、
エアバッグの膨張圧力が作用すると、該カバー1の中央
部付近が最も脆弱となっているから、この中央部付近か
ら開裂が開始する。一旦開裂が中央部付近から始まる
と、この開裂はテアライン2,3,4に沿って端縁部1
tにまで速やかに広がる。
In the cover 1 thus constructed,
When the inflation pressure of the airbag acts, the vicinity of the central portion of the cover 1 is weakest, so that the cleavage starts from the vicinity of the central portion. Once the cleavage begins near the center, the cleavage follows edge lines 1 and 2 along tear lines 2, 3, and 4.
It quickly spreads to t.

【0014】このように開裂が端縁部1tにまで到達す
るので、開裂片がカバー1の側方向に大きく開き出す。
そして、エアバッグも乗員正面に対して側方向に大きく
かつ速やかに展開するようになる。
Since the cleaving reaches the edge 1t in this way, the cleaving piece largely opens in the lateral direction of the cover 1.
Then, the airbag also expands laterally in a large direction with respect to the front of the occupant.

【0015】なお、本実施例にあっては凹部6の頂点部
分が溝部5の中央線上に位置しており、凹部6に生じた
開裂が凹部6以外の溝部5にも速やかに伝わる。そし
て、溝部5にあってもその中央線部分が最も肉薄となる
ものであり、開裂は溝部5の中央線に沿って速やかに広
がる。
In this embodiment, the apex of the recess 6 is located on the center line of the groove 5, and the cleavage generated in the recess 6 is quickly transmitted to the groove 5 other than the recess 6. The center line portion of the groove portion 5 is the thinnest, and the cleavage rapidly spreads along the center line of the groove portion 5.

【0016】上記実施例では、凹部6の間隔をカバー1
の中央部付近で密にすることにより、カバー1の中央部
付近を最も脆弱としてあるが、中央部付近における凹部
6の深さを深くすることによりカバー1の中央部付近を
最も脆弱にするよう構成してもよい。
In the above embodiment, the gap between the recesses 6 is set to cover the cover 1.
By making it dense near the central part of the cover 1, the vicinity of the central part of the cover 1 is the weakest, but by making the depth of the recess 6 near the central part deepest, the vicinity of the central part of the cover 1 is made the weakest. You may comprise.

【0017】第6図は本発明の異なる実施例に係るカバ
ー1Aの断面図、第7図は第6図のVII − VII線に沿う
断面図である。本実施例では、連続した溝部5より成る
テアラインが設けられている。このテアラインはカバー
1Aの端縁1tにまで達している。この溝部5は、カバ
ー1Aの中央部付近において最も深くなっており、端部
付近では中央部よりも浅く形成されている。本実施例に
あっては、溝部5は五角形断面形状のものであり、開裂
は溝部5の中央線に沿って進行する。
FIG. 6 is a sectional view of a cover 1A according to another embodiment of the present invention, and FIG. 7 is a sectional view taken along line VII-VII of FIG. In this embodiment, a tear line composed of continuous groove portions 5 is provided. This tear line reaches the edge 1t of the cover 1A. The groove portion 5 is deepest near the central portion of the cover 1A, and is formed shallower near the end portion than the central portion. In this embodiment, the groove portion 5 has a pentagonal cross-sectional shape, and the cleavage progresses along the center line of the groove portion 5.

【0018】[0018]

【発明の効果】以上の実施例からも明らかな通り、本発
明のエアバッグ収納用カバーは、エアバッグ展開時に開
裂がカバー端縁にまで到達するので、開裂片が側方向に
大きく変形する。このため、エアバッグは乗員正面に対
し側方向に急速かつ大きく展開する。従って、車両衝突
時の人体拘束、保護性能が著しく向上される。
As is apparent from the above embodiments, in the airbag storage cover of the present invention, the cleaving reaches the cover edge when the airbag is deployed, so that the cleaving piece is largely deformed in the lateral direction. Therefore, the airbag deploys rapidly and largely laterally with respect to the front of the occupant. Therefore, the human body restraint and protection performance in the event of a vehicle collision is significantly improved.

【図面の簡単な説明】[Brief description of drawings]

【図1】第1図は本発明の実施例に係るカバーの底面図
である。
FIG. 1 is a bottom view of a cover according to an embodiment of the present invention.

【図2】第2図は第1図のII−II線に沿う断面図であ
る。
FIG. 2 is a sectional view taken along line II-II in FIG.

【図3】第3図は第1図の要部拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a main part of FIG.

【図4】第4図は第1図の要部拡大断面図である。FIG. 4 is an enlarged cross-sectional view of a main part of FIG.

【図5】第5図は第1図の要部拡大断面図である。5 is an enlarged cross-sectional view of a main part of FIG.

【図6】第6図は本発明の別の実施例に係るカバーの断
面図である。
FIG. 6 is a sectional view of a cover according to another embodiment of the present invention.

【図7】第7図は第6図のVII − VII線に沿う断面図で
ある。
7 is a sectional view taken along the line VII-VII in FIG.

【符号の説明】[Explanation of symbols]

1,1A カバー 1t 端縁部 2,3,4 テアライン 5 溝部 6 凹部 1,1A cover 1t edge part 2,3,4 tear line 5 groove part 6 concave part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 一色成形法により成形されたエアバッグ
収納用カバーであって、エアバッグ動作開始時に開裂を
開始させるためのテアラインが内面に延設されているエ
アバッグ収納用カバーにおいて、該テアラインはカバー
の端縁にまで到達するように延設されていることを特徴
とするエアバッグ収納用カバー。
1. A cover for storing an airbag formed by a one-color molding method, wherein a tear line for starting tearing at the start of operation of the airbag is extended on an inner surface of the cover. Is a cover for storing an airbag, which is extended to reach an edge of the cover.
JP3269392A 1991-10-17 1991-10-17 Air bag receiving cover Pending JPH05105018A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3269392A JPH05105018A (en) 1991-10-17 1991-10-17 Air bag receiving cover
KR1019920014009A KR930007733A (en) 1991-10-17 1992-08-04 Airbag Storage Cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3269392A JPH05105018A (en) 1991-10-17 1991-10-17 Air bag receiving cover

Publications (1)

Publication Number Publication Date
JPH05105018A true JPH05105018A (en) 1993-04-27

Family

ID=17471772

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3269392A Pending JPH05105018A (en) 1991-10-17 1991-10-17 Air bag receiving cover

Country Status (2)

Country Link
JP (1) JPH05105018A (en)
KR (1) KR930007733A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006298311A (en) * 2005-04-25 2006-11-02 Sanko Gosei Ltd Vehicular airbag system and airbag cover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006298311A (en) * 2005-04-25 2006-11-02 Sanko Gosei Ltd Vehicular airbag system and airbag cover

Also Published As

Publication number Publication date
KR930007733A (en) 1993-05-20

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