JPS63184549A - Pad for gas bag - Google Patents
Pad for gas bagInfo
- Publication number
- JPS63184549A JPS63184549A JP62014935A JP1493587A JPS63184549A JP S63184549 A JPS63184549 A JP S63184549A JP 62014935 A JP62014935 A JP 62014935A JP 1493587 A JP1493587 A JP 1493587A JP S63184549 A JPS63184549 A JP S63184549A
- Authority
- JP
- Japan
- Prior art keywords
- pad
- gas bag
- thin
- thin section
- inflated
- 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
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 description 9
- 230000002950 deficient Effects 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000009751 slip forming Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
Landscapes
- Air Bags (AREA)
Abstract
Description
【発明の詳細な説明】
く産業上の利用分野〉
この発明は、自動車等の乗員の保護のために所定時膨張
するガスバッグを平常時被覆収納しているガスバッグ用
パッドに関する。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of Use The present invention relates to a pad for a gas bag that normally covers and accommodates a gas bag that inflates at a predetermined time to protect the occupants of an automobile or the like.
〈従来の技術〉
従来のガスバッグ用パッド（以下パッドと略す）は、ガ
スバッグが膨張する際、その圧力で破断し得るようウレ
タン等の軟質合成樹脂から形成されるとともに、所定部
位で破断し得るよう破断用の薄肉部を備えていた（特開
昭５０−１２７３３６号公報、特開昭５５−１１０６４
３号公報参照）。<Prior art> Conventional gas bag pads (hereinafter referred to as pads) are made of soft synthetic resin such as urethane so that they can break under the pressure when the gas bag expands. (Japanese Patent Application Laid-Open No. 50-127336, Japanese Patent Application Laid-Open No. 55-11064)
(See Publication No. 3).
そして、その薄肉部の厚さは一般に１．０〜０．５■■
で一定であった。The thickness of the thin part is generally 1.0 to 0.5■■
was constant.
〈発明が解決しようとする問題点〉
従来のこの種のパッドでは、ガスバッグ膨張時に所定部
位の薄肉部で破断する必要があることから、この薄肉部
は肉厚をさらに薄くすることが望ましい。<Problems to be Solved by the Invention> Conventional pads of this type need to break at a thin wall portion at a predetermined portion when the gas bag is inflated, so it is desirable that the wall thickness of this thin wall portion be made even thinner.
しかし、従来の薄肉部をさらに薄くすると、ガスバッグ
膨張時以外の１例えば、パッドが手等で押圧される際等
に破断してしまう場合が生じ、パッドの耐久性を低下さ
せてしまう、また、薄肉部をさらに薄くしたパッドを成
形する場合には、その薄肉部での材料流れが悪化するこ
とから、不良品が生じ易くなってしまう。However, if the conventional thin-walled part is made even thinner, it may break when the gas bag is inflated, for example, when the pad is pressed by hand, etc., reducing the durability of the pad. When molding a pad with a thinner part, the flow of material in the thinner part deteriorates, making it easier to produce defective products.
また、従来のこの種のパッドでは、薄肉部具外の一般部
の厚さは４．０〜７．０ｍ■程度であり、薄肉部の幅を
あまり狭くすると、やはりその薄肉部で材料流れが悪く
なり、成形不良を発生することとなるため、薄肉部の幅
をあまり狭くすることができず、薄肉部の幅を少なくと
も２■−程度必要としていた。In addition, in conventional pads of this type, the thickness of the general part outside the thin parts is about 4.0 to 7.0 m. The width of the thin-walled portion cannot be made very narrow, and the width of the thin-walled portion must be at least about 2 cm.
そのため、ガスバッグ膨張時にガスバッグがパッド薄肉
部を破断する際、第１１図に示すよう、その破断線りは
薄肉部の２層■程度の幅内で不規則に蛇行することとな
り、その破断線はパッド毎に相違することとなって、ガ
スバッグ膨張時におけるガスバッグがパッド薄肉部を破
断させてパッド外方で大きく膨らむ際のガスバッグの展
開荷重が、パッド毎にパラツク虞れが考えられる。Therefore, when the gas bag ruptures the thin part of the pad when the gas bag is inflated, the rupture line will meander irregularly within a width of about two layers of the thin part, as shown in Figure 11. The line will be different for each pad, and there is a risk that the expansion load of the gas bag will vary for each pad when the gas bag breaks the thin part of the pad and expands greatly outside the pad when the gas bag is inflated. It will be done.
この発明は、上述の問題を解決するもので、耐久性低下
や不良品の発生の増加を招くことなく、ガスバッグ膨張
時に確実に薄肉部内で破断でき。The present invention solves the above-mentioned problems, and can reliably break the gas bag in the thin wall portion when it is inflated, without reducing durability or increasing the number of defective products.
かつその破断線が蛇行することを規制できてパッド毎に
ガスバッグ展開荷重のバラツキを極力少なくすることが
できるパッドを提供することを目的とする。It is an object of the present invention to provide a pad that can prevent its break line from meandering and can minimize variations in gas bag deployment load from pad to pad.
く問題点を解決するための手段〉
この発明に係るパッドは、ガスバッグ膨張時に所定部位
で破断できるよう予め破断用の薄肉部が形成され、軟質
合成樹脂からなるガスバッグ用パッドであって、薄肉部
内に薄肉部形成方向に沿って断続的にさらに第２の薄肉
部を形成することによって、既述の問題を解決するもの
である。Means for Solving Problems> The pad according to the present invention is a pad for a gas bag made of a soft synthetic resin, in which a thin wall portion for breaking is formed in advance so that the pad can break at a predetermined portion when the gas bag is inflated, The above-mentioned problem is solved by further forming second thin parts intermittently within the thin part along the direction in which the thin part is formed.
〈発明の作用Φ効果〉
この発明に係るパッドでは、第２の薄肉部が、薄肉部内
におけるこの第２薄肉部以外の一般薄肉部より薄く、か
つ、薄肉部以外の一般部よりはるかに薄いことから、ガ
スバッグ膨張時、薄肉部内における第２１Ｊ肉部を結ぶ
ように破断線が走って破断される。<Operation Φ Effect of the Invention> In the pad according to the present invention, the second thin part is thinner than the general thin part other than the second thin part within the thin part, and is much thinner than the general part other than the thin part. When the gas bag is inflated, a break line runs and breaks connecting the 21st J thick part in the thin wall part.
そのため、ガスバッグ膨張時、確実に薄肉部内で破断さ
れ、しかも、その破断線は薄肉部内で蛇行が規制される
よう、第２薄肉部を結んで形成されることから、パッド
毎に略一致することとなり、パッド毎のガスバッグ展開
荷重のバラツキを極力少なくすることができる。Therefore, when the gas bag is inflated, it will surely break within the thin wall part, and since the break line is formed by connecting the second thin wall part so that meandering within the thin wall part is restricted, it will almost match for each pad. Therefore, variations in the gas bag deployment load for each pad can be minimized.
また、第２薄肉部が薄肉部内で断続的に形成されており
、＠肉部内では、その形成方向に沿ってさらに薄い部位
が連続して形成される訳ではなく、第２薄肉部以外の一
般薄肉部が断続的に残っていることから、この一般薄肉
部によって、ガスバッグ膨張時以外のパッド薄肉部の破
断を防止することができるとともに、成形時における材
料流れの悪化を防止でき、不良品発生の増加を招くこと
はない。In addition, the second thin part is formed intermittently within the thin part, and thinner parts are not continuously formed within the thin part in the direction in which it is formed; Since the thin-walled portion remains intermittently, this general thin-walled portion can prevent the thin-walled portion of the pad from breaking at times other than when the gas bag is inflated, and also prevent deterioration of material flow during molding, thereby preventing defective products. This will not lead to an increase in the number of outbreaks.
したがって、この発明に係るパッドでは、耐久性低下や
不良品発生の増加を招くことなく、ガスバッグ膨張時、
確実に薄肉部内で破断でき、かつその破断線が蛇行する
ことを規制できることから、パッド毎のガスバッグ展開
荷重のバラツキを極力少なくすることができる。Therefore, with the pad according to the present invention, when the gas bag is inflated, it is possible to
Since the gas bag can be reliably broken within the thin wall portion and the breaking line can be prevented from meandering, variations in the gas bag deployment load for each pad can be minimized.
〈実施例〉 以下、この発明の一実施例を図面に基づいて説明する。<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.
実施例のパッド１１は、第３・４図に示すように、ステ
アリングホイールのボス部Ｂ上部に配置されて、上方か
ら見て略長方形状の上壁１１Ａと上壁１１Ａ周縁から下
方へ延びる４つの側壁１１Ｂ−１１Ｇ−１１０−ＬＩＥ
とを備える略箱形状とし、ガスバッグ１６膨張時に容易
に破断されるようウレタン等の軟質合成樹脂で射出成形
により形成されている。As shown in FIGS. 3 and 4, the pad 11 of the embodiment is arranged above the boss portion B of the steering wheel, and has a substantially rectangular top wall 11A when viewed from above, and a pad 11 extending downward from the periphery of the top wall 11A. Two side walls 11B-11G-110-LIE
The gas bag 16 is formed by injection molding of a soft synthetic resin such as urethane so as to be easily broken when the gas bag 16 is inflated.
なお、このガスバッグ１６は、所定時インフレータ−１
３から発生するガスによって膨張されるもので、下端に
環状の留め金具１６ａが配置され、留め金具ｌｅａがイ
ンフレータ−１３のフランジ部１３ａとともにパッド１
１を係１するバックアッププレート１４に対して図示し
ないリベットやボルト等を介して固定されている。In addition, this gas bag 16 is used for the inflator 1 at a predetermined time.
An annular fastener 16a is arranged at the lower end of the pad 1, and the fastener lea is inflated by gas generated from the inflator 13.
1 is fixed to a backup plate 14 via rivets, bolts, etc. (not shown).
パッド１１の各側壁１１Ｂ〜ＩＩＨには、内周面の下端
付近全周に断面半円弧状の環状溝１１ａが形成されると
ともに、上壁１１Ａ長辺側の側壁１１Ｂ・１１Ｃ下端面
に上下方向の挿入溝１１ｂが形成されている。環状溝１
１ａは、パッド１１を係止するためのバックアッププレ
ート１４のフランジ部１４ａが嵌入され、挿入溝１１ｂ
は、インフレータ−１３のフランジ部１３ａとともにバ
ツクアッププレー）１４に固定されるホルダ１５の上方
突出部１５ａが挿入されるものである。In each of the side walls 11B to IIH of the pad 11, an annular groove 11a having a semicircular arc cross section is formed around the entire circumference near the lower end of the inner peripheral surface, and an annular groove 11a having a semicircular arc shape in cross section is formed on the lower end surface of the side walls 11B and 11C on the long side of the upper wall 11A in the vertical direction. An insertion groove 11b is formed. Annular groove 1
1a has an insertion groove 11b into which the flange portion 14a of the backup plate 14 for locking the pad 11 is fitted.
The upper protrusion 15a of the holder 15 fixed to the back-up play 14 is inserted together with the flange 13a of the inflator 13.
なお、このバックアッププレート１４は、ガスバッグ１
６膨張時、その圧力を上方へ作用させるものであり、上
方を開口させ底壁１４Ａ中夫にインフレータ−１３を突
出させる挿通孔１４ｂを備える略箱形状とし、第４図に
おける紙面を貫く側方においてホーンスイッチ機構を介
してステアリングホイールの芯金に連結され、パッド１
１やインフレータ−１３・ガスバッグ１６等をボスｍＢ
上部に配置させている。また、ホルダ１５は、パッド１
１におけるガスバッグ１６に近い上壁１１Ａ長辺側の側
壁１１Ｂ・ＩＩＣがガスバッグ１６膨張時に大きな圧力
を受けることとなり、バックアッププレート１４からこ
れらの側壁１１Ｂ−ＩＩｃが外れないよう、側壁１１Ｂ
・ＩＩＧ下端付近をバックアッププレー）１４とで挾持
するよう作用するものである。Note that this backup plate 14 is attached to the gas bag 1.
6. When inflated, the pressure is applied upward, and it is approximately box-shaped with an insertion hole 14b that opens at the top and allows the inflator 13 to protrude from the bottom wall 14A, and has a lateral side that penetrates the plane of the paper in FIG. The pad 1 is connected to the core metal of the steering wheel via a horn switch mechanism.
1, inflator 13, gas bag 16, etc. as boss mB
It is placed at the top. Further, the holder 15 is attached to the pad 1
The side walls 11B-IIC on the long side of the upper wall 11A near the gas bag 16 in No. 1 will receive a large pressure when the gas bag 16 is inflated.
・It acts to clamp the vicinity of the lower end of the IIG with the backup play (14).
そして、このパッド１１の上壁１１Ａには、ガスバッグ
１６膨張時に破断されてその破断された開口からガスバ
ッグ１６がパッド１１上方で大きく膨らむことができる
よう、上方から見て略Ｈ字形状の薄肉部２１が形成され
ている。The upper wall 11A of this pad 11 has a substantially H-shaped shape when viewed from above so that the gas bag 16 can be broken when the gas bag 16 is inflated and the gas bag 16 can inflate greatly above the pad 11 through the broken opening. A thin wall portion 21 is formed.
この薄肉部２１は、第１・２図に示すように、パッド上
壁１１Ａの表面側Ｘと裏面側Ｙとが共に窪んで形成され
るもので、厚さＴを０．８〜１．５ｍｍ程度の範囲内で
一定寸法とし、また、＋ｍｗを２．０〜５．０層ｌ程度
の範囲内で一定寸法としている。なお、薄肉部２１以外
の一般部２０の厚さＨは、４．０〜７．０１閣としてい
る。As shown in FIGS. 1 and 2, this thin portion 21 is formed by recessing both the front side X and the back side Y of the pad upper wall 11A, and has a thickness T of 0.8 to 1.5 mm. +mw is set to be a constant size within a range of approximately 2.0 to 5.0 layers. Note that the thickness H of the general portion 20 other than the thin portion 21 is 4.0 to 7.01 mm.
また、この薄肉部２１は、薄肉部２１の形成方向に沿っ
て上壁１１Ａ裏面側Ｙに断続的に形成される凹部２４に
より、薄肉部２１よりさらに薄くなる第２薄肉部２２と
、一般薄肉部２３とから構成されている。Moreover, this thin wall portion 21 is formed into a second thin wall portion 22 which is thinner than the thin wall portion 21, and a general thin wall portion 22, which is thinner than the thin wall portion 21, due to recesses 24 that are intermittently formed on the back side Y of the upper wall 11A along the direction in which the thin wall portion 21 is formed. It is composed of a section 23.
凹・部２４は、その深さｄを第２薄肉部２２の厚さｔが
薄肉部２１の厚さＴの約６〜４割となるように薄肉部２
１の厚さＴの約４〜６割の０．３〜０゜９−■とじ、幅
Ｗを薄肉部２１の蝙Ｗの約３〜４割の０．６〜２．０腸
ｌとし、また、長さ旦を３．０〜６．０■として、第２
薄肉部２２と一般薄肉部２３とが略同じ長さで形成され
るよう構成されている。なお、凹部２４において、あま
りその深さｄを大きくして幅Ｗを狭くすると、こめ部位
を成形する金型の耐久性が低下することとなり、また、
あまりその深さｄを小さくして幅Ｗを広くすると、ガス
バッグ１６１１１張時における薄肉部２１破断時にその
破断線の蛇行が大きくなることが考えられ、共に望まし
くない。The concave portion 24 has a depth d such that the thickness t of the second thin portion 22 is approximately 60 to 40% of the thickness T of the thin portion 21.
The width W is set to 0.6 to 2.0 mm, which is about 30 to 40% of the thickness T of the thin part 21, and In addition, the length is set to 3.0 to 6.0■, and the second
The thin wall portion 22 and the general thin wall portion 23 are configured to have substantially the same length. Note that if the depth d and width W of the recess 24 are too large and the width W is too narrow, the durability of the mold for forming the temple part will be reduced, and
If the depth d is too small and the width W is too wide, the meandering of the break line may increase when the thin wall portion 21 breaks when the gas bag 16111 is stretched, which is both undesirable.
さらに、このパッド１１の内部には、ガスバッグ１６ｗ
張時に、薄肉部２１以外で破断せず、また、薄肉部２１
以外の部位が飛散しないように、薄肉部２１下方を除い
てポリアミド等の合成繊維で織られた１枚のネツ）１２
が埋設されている。Furthermore, inside this pad 11, a gas bag 16w is provided.
When tensioning, the parts other than the thin wall part 21 do not break, and the thin wall part 21
A piece of netting made of synthetic fibers such as polyamide, except for the lower part of the thin wall part 21, is used to prevent other parts from scattering (12).
is buried.
このネット１２におけるパッド環状＠ １１ ａ上方部
位には、ガスバッグ１６１Ｎ張時のパッド側ＭＪ１１Ｂ
〜ＩＩＢの拡開防１用に、アラミツド繊維からなる補強
バンド１２ａが縫着されている。In the upper part of the pad ring @ 11a in this net 12, there is a pad side MJ11B when the gas bag 161N is tensioned.
A reinforcing band 12a made of aramid fiber is sewn to prevent expansion 1 of ~IIB.
ちなみに、このパッド１１の成形について説明すると、
成形に使用する金型１は、第５〜７図に示すように、型
締め時にパッド１１を成形できる所定のキャビティｌａ
が形成されるよう、各々所定のキャビティ用型面２ａ・
３ａΦ４ａを備えた固定型２・可動型３及び中子４から
構成されている。By the way, to explain the molding of this pad 11,
As shown in FIGS. 5 to 7, the mold 1 used for molding has a predetermined cavity la in which the pad 11 can be molded when the mold is clamped.
The mold surfaces 2a and 2a for each predetermined cavity are formed so that
It is composed of a fixed mold 2, a movable mold 3, and a core 4 having a diameter of 3a and Φ4a.
この中子４は、固定型２を挿通している突き出しピン５
に保持されるとともに、型開時に第７図に示すように固
定型２から突出してパッド１１を離型させ易く構成され
ている。This core 4 has an ejecting pin 5 inserted through the fixed mold 2.
The pad 11 is held in place, and is configured to protrude from the fixed mold 2 when the mold is opened, as shown in FIG. 7, so that the pad 11 can be easily released from the mold.
なお、２ｂは中子４の位置決め凹部４ｂに耐応する位置
決め凸部、２ｃはパッド１１の挿入ｉ４１１ｂを形成す
る突片、４ｃはパッド１１の環状溝１１ａを形成する突
起部、６は先端頭部をネット１２の網目に嵌入させてネ
ツ）１２を保持するセットピン、７は同じくネット１２
の網目に挿入させてネット１２を保持するビンである。In addition, 2b is a positioning convex portion corresponding to the positioning recess 4b of the core 4, 2c is a protrusion that forms the insertion i411b of the pad 11, 4c is a protrusion that forms the annular groove 11a of the pad 11, and 6 is a tip end. A set pin 7 is inserted into the mesh of the net 12 to hold the net 12, and 7 is the same as the net 12.
This is a bottle that holds the net 12 by inserting it into the mesh of the net 12.
さらに、可動型３のキャビティ用型面３ａには、パッド
上壁１１Ａの薄肉部２１の表面側Ｘを形成できるよう、
凸条３ｂが形成され、同様に中子４のキャビティ用型面
４ａには、薄肉部２１の裏面側Ｙを形成できるよう、凹
部２４に対応した第２凸部４ｅを備えた凸条４ｄが形成
されている（第２・５図参照）。Further, on the cavity mold surface 3a of the movable mold 3, so that the surface side X of the thin part 21 of the pad upper wall 11A can be formed.
A protruding line 3b is formed, and similarly, a protruding line 4d having a second protruding part 4e corresponding to the recessed part 24 is formed on the mold surface 4a for the cavity of the core 4 so that the back side Y of the thin part 21 can be formed. (See Figures 2 and 5).
上述の金型ｌを使用してパッド１１を成形する工程を説
明すると、ネット１２を中子４にセットしく第５図参照
）、型締じさせてキャビティｌａ内に成形材料をゲー）
１ｂを介して注入して成形しく第６図参照）、その後型
開きさせて離型させ、所定のパリ取りを行なえば、所定
のパッド１１を得ることができる。To explain the process of molding the pad 11 using the above-mentioned mold l, the net 12 is set on the core 4 (see Fig. 5), the mold is clamped, and the molding material is poured into the cavity la.
A desired pad 11 can be obtained by injecting and molding through 1b (see FIG. 6), then opening and releasing the mold, and removing a predetermined amount of deburr.
そして、このパッド１１をバックアッププレート１４及
びホルダ１５を介してボス部Ｂ上部所定位置に取付けた
後、ガスバッグ１６が膨張する際には、薄肉部２１内の
第２薄肉部２２が一般薄肉部２３より薄くかつ一般部２
０よりはるかに薄いことから、Ｍ内部２１内の第２薄肉
部２２を結ぶように破断線が走って破断される。After this pad 11 is attached to a predetermined position above the boss part B via the backup plate 14 and the holder 15, when the gas bag 16 is inflated, the second thin part 22 in the thin part 21 becomes the general thin part. Thinner than 23 and general part 2
Since it is much thinner than 0, it is broken with a break line running so as to connect the second thin part 22 inside the M interior 21.
そのため、ガスバッグ１６膨張時、確実に薄肉部２１内
で破断され、しかも、その破断線りは第１０図に示すよ
う薄肉部２１内で蛇行が規制されて第２薄肉部２２を結
んで形成されることから、パッド毎に略一致することと
なって、パッドｌｌ毎のガスバッグ展開荷重のバラツキ
を略無くすことができる。Therefore, when the gas bag 16 is inflated, it is reliably broken within the thin wall portion 21, and the break line is formed by connecting the second thin wall portion 22, with the meandering within the thin wall portion 21 being restricted, as shown in FIG. Therefore, the gas bag deployment loads are substantially the same for each pad, and variations in the gas bag deployment load for each pad can be substantially eliminated.
また、このパッド１１では、第２薄肉部２２が薄肉部２
１内で断続的に形成されており、薄肉部２１内でその形
成方向に沿ってさらに薄い部位が連続して形成される訳
ではなく、一般薄肉部２３が断続的に残っていることか
ら、薄肉部２１の破断強度を著しく低下させることはな
く、ガスバッグ１６膨張時以外のホーン作動時のパッド
１１押圧峙等に薄肉部２１が破断することを防止できる
さらにまた。Ｐ１肉部２１内に一般薄肉部２３が断続的
に形成されていることから、バッド１１成形時、この一
般薄肉部２３を介して成形材料が第２薄肉部２２に容易
に流入し、材料流れの悪化による不良品発生を防止する
ことができる。Further, in this pad 11, the second thin portion 22 is
1, and thinner parts are not continuously formed in the thin wall part 21 along the forming direction, but the general thin wall part 23 remains intermittently. Furthermore, the breaking strength of the thin wall portion 21 is not significantly reduced, and the thin wall portion 21 can be prevented from breaking when the pad 11 is pressed when the horn is activated other than when the gas bag 16 is inflated. Since the general thin wall portions 23 are intermittently formed within the P1 wall portion 21, when molding the pad 11, the molding material easily flows into the second thin wall portion 22 through the general thin wall portions 23, thereby preventing material flow. It is possible to prevent the occurrence of defective products due to deterioration of the quality.
ちなみに、一般薄肉部２３は、薄肉部２１内に断続的に
第２薄肉部２２が形成されて薄肉部２１内での破断を容
易にさせていることから、従来の薄肉部より若干厚くし
てもよく、若干厚くすれば、成形時における材料流れ悪
化による不良品発生を一層防止することができる。Incidentally, the general thin wall portion 23 is made slightly thicker than the conventional thin wall portion because the second thin wall portions 22 are intermittently formed within the thin wall portion 21 to facilitate breakage within the thin wall portion 21. If the thickness is slightly thicker, it is possible to further prevent the occurrence of defective products due to poor material flow during molding.
なお、実施例のパッド１１では、その薄肉部２１が上壁
１１Ａの表面倒又と裏面側Ｙとを窪ませて裏面側Ｙに凹
部２４を形成したものを示したが、第８図に示すように
１例えば上壁１１Ａの裏面側Ｙの一方から窪ませて薄肉
部３１を形成してもよく、また、第９図に示すように表
面側Ｘに凹部４４を形成して薄肉部４１を構成してもよ
い。In the pad 11 of the embodiment, the thin portion 21 is shown to be indented in the front surface or the back surface side Y of the upper wall 11A to form a recess 24 on the back surface side Y, but as shown in FIG. For example, the thin wall portion 31 may be formed by recessing one side of the back side Y of the upper wall 11A as shown in FIG. may be configured.
第１図はこの発明の一実施例におけるパッドを示す断面
図であり第３図のＩ−Ｉ断面図、第２図は同実施例のパ
ッドの成形時における型開時の状態を示す部分拡大断面
図、第３図は同実施例のパッドの斜視図、第４図は同実
施例のパッドの使用態様断面図、第５図・第６図・第７
図は各々同実施例のパッドの成形時を順に示す金型の断
面図。
第８図・第９図は各々薄肉部の他の形状を示す断面図、
第１０図は同実施例のパッドの破断を示す平面図、第１
１図は従来のパッドの破断を示す平面図である。
１１・・・パッド、
２１−３１・４１・・・薄肉部、
２２・４４・・・第２薄肉部。
特 許 出 願 人
豐田合成株式会社
代 理 人FIG. 1 is a sectional view showing a pad according to an embodiment of the present invention, and FIG. 3 is a sectional view taken along line II in FIG. 3 is a perspective view of the pad of the same embodiment, FIG. 4 is a sectional view of how the pad of the same embodiment is used, and FIGS. 5, 6, and 7
Each figure is a cross-sectional view of a mold showing the steps of molding a pad according to the same embodiment. Figures 8 and 9 are cross-sectional views showing other shapes of the thin-walled portion, respectively;
FIG. 10 is a plan view showing the fracture of the pad of the same example;
FIG. 1 is a plan view showing the breakage of a conventional pad. 11... Pad, 21-31, 41... Thin wall portion, 22, 44... Second thin wall portion. Patent application Agent: Toyoda Gosei Co., Ltd.
Claims (1)
用の薄肉部が形成され、軟質合成樹脂からなるガスバッ
グ用パッドであつて、前記薄肉部内に薄肉部形成方向に
沿つて断続的にさらに第２の薄肉部が形成されているこ
とを特徴とするガスバッグ用パッド。A pad for a gas bag made of a soft synthetic resin, in which a thin part for breaking is formed in advance so that the gas bag can be broken at a predetermined position when the gas bag is inflated, and a second part is intermittently arranged in the thin part along the direction in which the thin part is formed. A gas bag pad characterized by having a thin wall portion formed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62014935A JPH069950B2 (en) | 1987-01-23 | 1987-01-23 | Pad for gas bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62014935A JPH069950B2 (en) | 1987-01-23 | 1987-01-23 | Pad for gas bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63184549A true JPS63184549A (en) | 1988-07-30 |
| JPH069950B2 JPH069950B2 (en) | 1994-02-09 |
Family
ID=11874825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62014935A Expired - Lifetime JPH069950B2 (en) | 1987-01-23 | 1987-01-23 | Pad for gas bag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH069950B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0265656U (en) * | 1988-11-08 | 1990-05-17 | ||
| JPH02133267A (en) * | 1988-11-11 | 1990-05-22 | Nippon Plast Co Ltd | Air bag device |
| FR2643320A1 (en) * | 1989-02-20 | 1990-08-24 | Takata Corp | RUPTURE LINER FOR INFLATABLE SAFETY BAG FOR MOTOR VEHICLE |
| US4995638A (en) * | 1988-12-29 | 1991-02-26 | Toyota Jidosha Kabushiki Kaisha | Air bag cover |
| FR2662407A1 (en) * | 1990-05-24 | 1991-11-29 | Takata Corp | COVER FOR LODGING A PNEUMATIC CUSHION. |
| JPH0427635A (en) * | 1990-05-24 | 1992-01-30 | Takata Kk | Air bag storage cover |
| JPH04135946A (en) * | 1990-09-28 | 1992-05-11 | Ikeda Bussan Co Ltd | Air bag device |
| US5217244A (en) * | 1989-07-14 | 1993-06-08 | Tip Engineering Group | Arrangement for forming an air bag deployment opening |
| US5280949A (en) * | 1990-03-30 | 1994-01-25 | Mazda Motor Corporation | Air bag device for automobile |
| US5292150A (en) * | 1991-12-11 | 1994-03-08 | Takata Corporation | Cover of air bag device |
| US5335935A (en) * | 1992-08-31 | 1994-08-09 | Plastic Mold Technology Incorporated | Air bag cover/molded article with integral cover layer of leather |
| EP0894680A1 (en) | 1993-11-22 | 1999-02-03 | Bridgestone Corporation | Method and apparatus for assembling air bags |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116537A (en) * | 1976-03-26 | 1977-09-30 | Toyota Motor Corp | Expansion type passenger restricting device for automobile or the like |
-
1987
- 1987-01-23 JP JP62014935A patent/JPH069950B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116537A (en) * | 1976-03-26 | 1977-09-30 | Toyota Motor Corp | Expansion type passenger restricting device for automobile or the like |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0265656U (en) * | 1988-11-08 | 1990-05-17 | ||
| JPH02133267A (en) * | 1988-11-11 | 1990-05-22 | Nippon Plast Co Ltd | Air bag device |
| US4995638A (en) * | 1988-12-29 | 1991-02-26 | Toyota Jidosha Kabushiki Kaisha | Air bag cover |
| FR2643320A1 (en) * | 1989-02-20 | 1990-08-24 | Takata Corp | RUPTURE LINER FOR INFLATABLE SAFETY BAG FOR MOTOR VEHICLE |
| JPH02220945A (en) * | 1989-02-20 | 1990-09-04 | Takata Kk | Cover for containing air bag |
| US5060971A (en) * | 1989-02-20 | 1991-10-29 | Takata Corporation | Vehicle air bag cover |
| US5217244A (en) * | 1989-07-14 | 1993-06-08 | Tip Engineering Group | Arrangement for forming an air bag deployment opening |
| US5280949A (en) * | 1990-03-30 | 1994-01-25 | Mazda Motor Corporation | Air bag device for automobile |
| US5143401A (en) * | 1990-05-24 | 1992-09-01 | Takata Corporation | Cover for accommodating an air bag |
| US5195773A (en) * | 1990-05-24 | 1993-03-23 | Takata Corporation | Cover for accommodating an air bag |
| JPH0427635A (en) * | 1990-05-24 | 1992-01-30 | Takata Kk | Air bag storage cover |
| FR2662407A1 (en) * | 1990-05-24 | 1991-11-29 | Takata Corp | COVER FOR LODGING A PNEUMATIC CUSHION. |
| JPH04135946A (en) * | 1990-09-28 | 1992-05-11 | Ikeda Bussan Co Ltd | Air bag device |
| US5292150A (en) * | 1991-12-11 | 1994-03-08 | Takata Corporation | Cover of air bag device |
| US5335935A (en) * | 1992-08-31 | 1994-08-09 | Plastic Mold Technology Incorporated | Air bag cover/molded article with integral cover layer of leather |
| US5650115A (en) * | 1992-08-31 | 1997-07-22 | Plastic Mold Technology Incorporated | Method for making molded air bag covers and other articles with integral cover layer of leather |
| EP0894680A1 (en) | 1993-11-22 | 1999-02-03 | Bridgestone Corporation | Method and apparatus for assembling air bags |
| US6173987B1 (en) | 1993-11-22 | 2001-01-16 | Bridgestone Corporation | Air bag apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH069950B2 (en) | 1994-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS63184549A (en) | Pad for gas bag | |
| KR101718689B1 (en) | Airbag cover apparatus | |
| EP1273487B1 (en) | Air belt device | |
| JPH05162599A (en) | Cover for accommodating air bag | |
| US5033771A (en) | Airbag restraint system | |
| JP7179592B2 (en) | Airbag device cover body | |
| JPS63184548A (en) | Pad for gas bag | |
| JPH04197849A (en) | Structure of automobile air bag expansion opening part and manufacture thereof | |
| EP1086004B1 (en) | Airbag tear seam | |
| JPS63182115A (en) | Molding method for pad for gas bag and mold to be used for its molding | |
| JPH0334814A (en) | Production of air bag cover for automobile and forming mold thereof | |
| CN102753400A (en) | Airbag module for a motor vehicle | |
| JPH10175499A (en) | Side air bag | |
| JPH0452117A (en) | Method for molding module cover of air bag apparatus | |
| JPH03138117A (en) | Manufacture of cover for air bag | |
| JP2008239065A (en) | Airbag device | |
| JP7488515B2 (en) | Airbag cover | |
| JPH1134785A (en) | Manufacture of side air bag | |
| JP2002137710A (en) | Structure for opening air bag door | |
| JPS63251352A (en) | Pad with air bag device | |
| JPH03136948A (en) | Cover case for air bag | |
| JP2000153745A (en) | Vehicle airbag system | |
| US20230071729A1 (en) | Airbag cover | |
| JP3909766B2 (en) | Airbag device | |
| JP2004338452A (en) | Cover for air bag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |