JPH0427637A - Air bag storage cover - Google Patents

Air bag storage cover

Info

Publication number
JPH0427637A
JPH0427637A JP2134685A JP13468590A JPH0427637A JP H0427637 A JPH0427637 A JP H0427637A JP 2134685 A JP2134685 A JP 2134685A JP 13468590 A JP13468590 A JP 13468590A JP H0427637 A JPH0427637 A JP H0427637A
Authority
JP
Japan
Prior art keywords
cover
tear line
tear
breakage
center
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.)
Granted
Application number
JP2134685A
Other languages
Japanese (ja)
Other versions
JP3010682B2 (en
Inventor
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 JP2134685A priority Critical patent/JP3010682B2/en
Priority to KR90020397A priority patent/KR970008427B1/en
Priority to US07/688,454 priority patent/US5152548A/en
Priority to CA002041464A priority patent/CA2041464A1/en
Priority to GB9109516A priority patent/GB2244681B/en
Priority to FR9105818A priority patent/FR2662410B1/en
Priority to DE4115904A priority patent/DE4115904C2/en
Publication of JPH0427637A publication Critical patent/JPH0427637A/en
Application granted granted Critical
Publication of JP3010682B2 publication Critical patent/JP3010682B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Air Bags (AREA)

Abstract

PURPOSE:To surely prevent a cover from scattering, by providing a high strength part for preventing propagation of breakage, in the terminal end part of each tear line which initiates the breakage upon operation of an air bag so that the breakage of the cover is stopped at the terminal end of the tear line. CONSTITUTION:A cover is formed therein with a center tear line 2, and end tear lines 3, 4 for initiating breakage upon operation of an air bag. Further, the center tear line 2 is extended longitudinally of the cover in the center part of the cover 1. Meanwhile, the tear lines 3, 4 are extended transversely of the cover 1 in the vicinity of the ends of the cover 1. In this case, a bead part It serving as a high strength part is laid on each end side of the tear lines 3, 4 so that the bead part It blocks the prolonging of the tear lines 3, 4. Accordingly, if breakage is initiated in the vicinity of the center, it spreads smoothly along the tear lines 2, 3, 4 UP to their terminal end parts. Since the provision of the bead parts It, further propagation of the breakage can be prevented.

Description

【発明の詳細な説明】 [産業上の利用分野コ 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。
[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a cover for housing an airbag that operates, inflates and deploys by sensing the impact, deformation, etc. of a vehicle collision. .

[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
ものかある。渚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、テアラインに沿って硬質層にスリ
ットを形成したものなどもある。
[Prior Art] A conventional cover is provided with a tear line so that the bag storage cover is torn from a predetermined line when the airbag is activated. This tear line may be one in which grooves are continuously or semi-continuously formed in the form of perforations at the planned tear line. The depth of the beach may be increased at intervals. Further, in cases 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 tear line.

[発明か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、カバー
の中央付近のテアラインから開始した開裂がテアライン
の末端にまて到達した後、さらに開裂片の慣性力によっ
てテアライン以外の箇所まで進行し、遂にはカバーの端
部にまで到達することがある。このように開裂がテアラ
イン以外の部分にまで拡がると、開裂片か千切れて飛散
する可能性があるから、飛散防止のための対策か必要と
なり、コストアップを招いていた。
[Problem to be solved by the invention] In the conventional airbag storage cover described above, after the tearing starts from the tear line near the center of the cover and reaches the end of the tear line, the inertia of the tear piece further causes It may progress to areas other than the tear line and eventually reach the end of the cover. If the cleavage spreads to areas other than the tear line, there is a possibility that the cleaved pieces will be torn off and scattered, so measures must be taken to prevent them from scattering, leading to an increase in costs.

[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、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設りらねて
いるものにおいて、該テアラインの末t4部分に、開裂
伝播防止用の高強度部を設けたことを特徴とするもので
ある。
[Means for Solving the Problems] The airbag storage cover of the present invention is provided with a tear line for starting tearing at the start of airbag operation, and a tear line is provided at the end t4 of the tear line to prevent tear propagation. It is characterized by the provision of a high-strength part for prevention.

[作用コ 本発明のエアバッグ収納用カバーにあっては、−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。この開裂がテアラインの末端に
達すると、尚該末端部分の高強度部よりそれ以上の伝播
が防止される。
[Function] In the airbag storage cover of the present invention, once the cover starts to tear, the tear spreads to the end along the tear line. Once this cleavage reaches the end of the tear line, further propagation is prevented by the high strength portion of the end portion.

[実施例] 以下図面に示す実施例を参照1ノながら本発明について
更に詳細に説明する。
[Examples] The present invention will be described in more detail below with reference to embodiments shown in the drawings.

第1図(a)は本発明の実施例に係るエアバッグ収納用
カバーの底面図、第1図(b)は第1図(a)のB−B
線断面図、第1図(C)は第1図(b)のC−C線断面
図、第2図は第1図のII −11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−rV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(a) is a bottom view of an airbag storage cover according to an embodiment of the present invention, and FIG. 1(b) is a B-B in FIG. 1(a).
1(C) is a sectional view taken along the line CC in FIG. 1(b), FIG. 2 is a sectional view taken along line II-11 in FIG. Sectional view along line III-III, No. 4
The figure is a sectional view taken along line IV-rV in FIGS. 1.3, and FIG. 5 is a sectional view taken along line V-V in FIGS. 1 and 3. In addition, the fifth
FIG. 5(a) is a cut end view, and FIG. 5(b) is a cut sectional view. Moreover, FIG. 3.4.5 is an enlarged view.

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。
This cover 1 has a substantially rectangular shape, and is provided with tear lines as a center tear line 2 and end tear lines 3 and 4 for initiating tearing when the air bag is activated. The central tear line 2 extends in the longitudinal direction of the cover 1 through the central portion of the cover 1. The tear line 3.4 extends in the transverse direction of the cover 1 and is provided along the vicinity of the end of the cover 1. Note that the tear line 2 and the tear line 3.4 are provided so as to be continuous.

このテアライン3,4の末端部はカバー1の側面壁部分
の途中にまで達している。そして、このテアライン3,
4の延長方向を遮るように高強度部としての凸部1tが
設けられている。本実施例では凸部1tは短い弧状の凸
条よりなり、テアライン3.4の末端部を取り囲むよう
に設けられている。
The end portions of the tear lines 3 and 4 reach halfway up the side wall portion of the cover 1. And this tear line 3,
A convex portion 1t serving as a high-strength portion is provided so as to block the extension direction of 4. In this embodiment, the convex portion 1t consists of a short arc-shaped convex strip, and is provided so as to surround the end portion of the tear line 3.4.

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6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ど、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, 3.4 are continuously extending grooves 5.
As shown in FIG. 4, this groove 5 has a triangular cross-section. In addition, as shown in FIG.
It has a pentagonal shape with a sloped surface 6b formed to have a triangular cross-sectional shape at the bottom thereof. The concave portion 6 has a hexagonal shape when viewed from the bottom of the cover 1, and two opposing vertices of the hexagon form a tear line 2.3.
.. It is formed so that it is arranged along the center line of 4.

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1IFl、
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jている。
In the center part of the cover (board center part) of the central tear line 2, the recesses 6 are densely formed with a small distance between adjacent recesses. And from this central part, 1IFl,
As the distance between the recesses 6 approaches the tear lines 3 and 4, the distance between the recesses 6 becomes larger, and the recesses 6 are so-called sparsely provided.

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 line 3.4, the intervals between the recesses 6 are almost equal to each other, but as in the tear line 2, the intervals between the recesses 6 are small near the longitudinal center of the tear line 3.4. Alternatively, the distance between the recesses 6 may become larger as the distance from the recesses 6 increases.

なお、カバーは多層構造であっても単層構造であっても
良い。また、インサート材を有していても良い。
Note that the cover may have a multilayer structure or a single layer structure. Moreover, it may have an insert material.

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。−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2.34に沿って末端部にまで速やかに広が
る。
In the cover 1 configured in this manner, when the inflation pressure of the airbag is applied, the center portion of the cover 1 is most vulnerable, and therefore rupture starts from the center portion. - Once the cleavage begins near the center, it quickly spreads along the tear line 2.34 to the distal end.

この開裂がテアライン3.4の末端部にまで到達すると
、凸部1tが設けられているので、それ以上の開裂の伝
播が防止され、開裂はこのテアライン3,4の末端部に
おいて停止する。従フて、過度に開裂が進行して開裂片
が千切れ飛んだりすることが確実に防止される。
When this cleavage reaches the end of the tear line 3.4, the protrusion it is provided to prevent further propagation of the cleavage, and the tear stops at the end of the tear line 3,4. Therefore, it is reliably prevented that the cleavage progresses excessively and the cleavage pieces are torn to pieces.

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 portion of the recess 6 is located on the center line of the groove 5, and the cleavage that occurs in the recess 6
It is quickly transmitted to other groove portions 5 as well. Even in the groove portion 5, the center line portion thereof is the thinnest portion, and the cleavage quickly spreads along the center line of the groove portion 5.

上記実施例では、凸部1tにより高強度部を構成してい
るが、本発明では金属メツシュや金属板、あるいは高強
度合成樹脂材など、カバー素材よりも強度の高い部材を
テアライン末端部分に埋設(例えばインサート)し、そ
れ以上の開裂の伝播を阻止するようにしても良い。
In the above embodiment, the convex portion 1t constitutes a high-strength portion, but in the present invention, a member having higher strength than the cover material, such as a metal mesh, a metal plate, or a high-strength synthetic resin material, is embedded in the tear line end portion. (for example, an insert) to prevent further propagation of cleavage.

図に示されたテアラインの配置や、テアラインの断面形
状は本発明の一例であり、テアラインを図示以外の配置
や断面形状としても良いことは明らかである。
The arrangement of the tear line and the cross-sectional shape of the tear line shown in the drawings are merely examples of the present invention, and it is clear that the tear line may have a different arrangement and cross-sectional shape than that shown in the drawing.

また、テアラインの末端部分は、図示以外の位置に設け
ても良く、例えば第1図(b)のカバー1の端縁近傍部
Eや、カバーの天井部Fなどに位置させ、当該末端部分
に開裂伝播防止用の高強度部を設けても良い。
Further, the end portion of the tear line may be provided at a position other than that shown in the drawings, for example, it may be located near the edge E of the cover 1 in FIG. 1(b) or at the ceiling F of the cover, and A high-strength portion may be provided to prevent crack propagation.

[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おけるカバーの開
裂がテアラインの末端で確実に停止し、゛それ以上の伝
播が防止される。このため、カバーの飛散が確実に防止
される。また、このため、カバーに要求される強度や、
エアバッグ装置のカバー飛散防止機構が不要化され、構
成の簡易化とコストダウンを図ることができる。
[Effects of the Invention] As is clear from the above embodiments, the airbag storage cover of the present invention reliably stops the cover from tearing at the end of the tear line when the airbag is deployed, thereby preventing further propagation. be done. Therefore, scattering of the cover is reliably prevented. Also, for this reason, the strength required for the cover,
This eliminates the need for a cover scattering prevention mechanism for the airbag device, allowing for a simpler configuration and lower costs.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図(a)は本発明の実施例に係るカバーの底面図、
第1図(b)及び第1図(C)はカバーの要部断面図、
第2図は第1図の11− IT線に沿う断面図である。 第3図、第4図、第5図はそれぞれ第1図の要部拡大断
面図である。 1・・・カバー、   1t・・・凸部(高強度部)、
2.3.4・・・テアライン、 5・・・溝部、    6・・・凹部。 代理人  弁理士  重 野  剛
FIG. 1(a) is a bottom view of a cover according to an embodiment of the present invention;
FIG. 1(b) and FIG. 1(C) are sectional views of main parts of the cover,
FIG. 2 is a sectional view taken along line 11-IT in FIG. 1. 3, 4, and 5 are enlarged sectional views of the main parts of FIG. 1, respectively. 1... Cover, 1t... Convex part (high strength part),
2.3.4... Tear line, 5... Groove, 6... Recess. Agent Patent Attorney Tsuyoshi Shigeno

Claims (1)

【特許請求の範囲】[Claims] 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
インが設けられているエアバッグ収納用カバーにおいて
、該テアラインの末端部分に、開裂伝播防止用の高強度
部を設けたことを特徴とするエアバッグ収納用カバー。
An airbag storage cover provided with a tear line for starting tearing when the airbag starts operating, characterized in that a high-strength part for preventing tear propagation is provided at the end of the tear line. cover.
JP2134685A 1990-05-24 1990-05-24 Airbag storage cover Expired - Fee Related JP3010682B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2134685A JP3010682B2 (en) 1990-05-24 1990-05-24 Airbag storage cover
KR90020397A KR970008427B1 (en) 1990-05-24 1990-12-12 Cover for an air-bag
US07/688,454 US5152548A (en) 1990-05-24 1991-04-22 Cover for accommodating an air bag
CA002041464A CA2041464A1 (en) 1990-05-24 1991-04-29 Cover for accommodating an air bag
GB9109516A GB2244681B (en) 1990-05-24 1991-05-02 A cover for accomodating an air bag
FR9105818A FR2662410B1 (en) 1990-05-24 1991-05-14 LID FOR HOUSING A TIRE CUSHION.
DE4115904A DE4115904C2 (en) 1990-05-24 1991-05-15 Cover for holding an airbag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2134685A JP3010682B2 (en) 1990-05-24 1990-05-24 Airbag storage cover

Publications (2)

Publication Number Publication Date
JPH0427637A true JPH0427637A (en) 1992-01-30
JP3010682B2 JP3010682B2 (en) 2000-02-21

Family

ID=15134182

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2134685A Expired - Fee Related JP3010682B2 (en) 1990-05-24 1990-05-24 Airbag storage cover

Country Status (2)

Country Link
JP (1) JP3010682B2 (en)
KR (1) KR970008427B1 (en)

Also Published As

Publication number Publication date
KR970008427B1 (en) 1997-05-24
JP3010682B2 (en) 2000-02-21

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