JP7223340B2 - airbag cover - Google Patents

airbag cover Download PDF

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JP7223340B2
JP7223340B2 JP2020009318A JP2020009318A JP7223340B2 JP 7223340 B2 JP7223340 B2 JP 7223340B2 JP 2020009318 A JP2020009318 A JP 2020009318A JP 2020009318 A JP2020009318 A JP 2020009318A JP 7223340 B2 JP7223340 B2 JP 7223340B2
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skin layer
airbag
recess
airbag cover
base material
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JP2021115919A (en
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聡彦 梶山
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Toyoda Gosei Co Ltd
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本発明は、乗員等を保護するように膨張するエアバッグを備えたエアバッグ装置に使用され、折り畳まれたエアバッグを覆い、かつ、エアバッグの膨張時には、突出用開口を形成して、エアバッグを突出させる構成のエアバッグカバーに関する。 INDUSTRIAL APPLICABILITY The present invention is used in an airbag device having an airbag that inflates to protect an occupant or the like, covers the folded airbag, and forms a projecting opening when the airbag is inflated to The present invention relates to an airbag cover configured to protrude the bag.

従来、車両のインストルメントパネルに配設されるエアバッグカバーでは、ポリプロピレン等からなる合成樹脂製の基材と、基材の表面側に接着された表皮層と、を有する構成として、折り畳まれたエアバッグを覆い、かつ、膨張するエアバッグにより突出用開口を形成して、突出用開口からエアバッグを突出させる構成としていた（例えば、特許文献１参照）。表皮層は、ポリオレフィン系熱可塑性エラストマー等からなる表皮本体と、表皮本体を接着させたウレタン等からなる発泡層（クッション層）、とから構成されていた。突出用開口は、基材の裏面側から表面側に凹む凹部を配設させて構成されるテア部、を破断させて形成され、テア部の凹部は、上方から見て、中央の一文字状の部位の両端からそれぞれＶ字状に拡開する両端Ｙ字状としていた。このテア部では、破断時、中央の一文字状の部位の両側の前後一対の中央ドア部と、中央の一文字状の部位の両端における左右一対の三角板状の三角ドア部と、が開く構成としていた。そして、突出用開口の形成時における表皮層の破断が容易なように、表皮層の基材に対する接着強度に差を設けるように、基材の凹部の上方付近を、低い接着力とし、その両側を、高い接着力として、表皮層を基材に接着させていた。すなわち、表皮層における基材に対する接着力の高いエリアでは、基材に対してずれないことから、伸び難くなって、破断し難くなり、逆に、表皮層の基材に対する接着力の低いエリアでは、表皮層が伸び易いことから、薄くなって、基材のテア部ととともに、破断し易くなる。そのため、このエアバッグカバーでは、エアバッグの膨張時、基材のテア部が破断し、前後一対の中央ドア部が開くとともに、左右一対の三角ドア部が開き、その際、表皮層も、接着力の高い領域近傍の接着力の低い基材の凹部の上方付近を破断させることとなって、エアバッグカバーは、突出用開口を形成することとなり、そして、この突出用開口からエアバッグが突出していた。 Conventionally, an airbag cover disposed on an instrument panel of a vehicle has a structure including a base material made of synthetic resin such as polypropylene and a skin layer adhered to the surface side of the base material. An airbag is covered and an inflating airbag forms a projection opening, and the airbag projects from the projection opening (see, for example, Patent Document 1). The skin layer is composed of a skin body made of polyolefin thermoplastic elastomer or the like and a foam layer (cushion layer) made of urethane or the like to which the skin body is adhered. The protruding opening is formed by breaking a tear portion configured by arranging a recess recessed from the back surface side to the front surface side of the base material, and the recess portion of the tear portion is a straight line shape in the center when viewed from above. Both ends of the region were formed in a Y-shape that spreads in a V-shape from each end. In this tear portion, when broken, a pair of front and rear central door portions on both sides of the central linear portion and a pair of left and right triangular plate-shaped triangular door portions at both ends of the central linear portion are configured to open. . Then, in order to facilitate the breakage of the skin layer during the formation of the protrusion opening, the adhesion strength of the skin layer to the base material is different, and the vicinity of the upper part of the concave part of the base material is made to have a low adhesive strength, and both sides thereof are provided. was used as a high adhesive force to adhere the skin layer to the base material. That is, in the area of the skin layer with high adhesion to the base material, it is difficult to stretch and break because it does not shift with respect to the base material, and conversely, in the area of the skin layer with low adhesion to the base material. Since the skin layer is easily stretched, it becomes thin and easily breaks along with the tear portion of the base material. Therefore, in this airbag cover, when the airbag is inflated, the tear portion of the base material is broken, the front and rear central door portions are opened, and the left and right triangular door portions are opened. By breaking the upper portion of the concave portion of the base material with low adhesive strength in the vicinity of the high-strength region, the airbag cover forms a protrusion opening, and the airbag protrudes from this protrusion opening. was

特開２０１２－１７６６６３号公報JP 2012-176663 A

しかし、従来のエアバッグカバーは、表皮層の基材への接着力を低くする領域が、表皮層の基材への接着力を高くする領域の幅寸法の２倍以上として、広い幅寸法としており、表皮層の破断ラインを安定させ難く、表皮層の一部が破断時に飛散する虞れを生じさせており、改善の余地があった。 However, in the conventional airbag cover, the width of the area where the adhesive strength of the skin layer to the substrate is low is at least twice the width of the area where the adhesive strength of the skin layer to the substrate is increased. Therefore, it is difficult to stabilize the breaking line of the skin layer, and there is a risk that part of the skin layer will scatter at the time of breakage, and there is room for improvement.

本発明は、上述の課題を解決するものであり、基材のテア部の破断時、表皮層もテア部に沿って安定して破断させることができるエアバッグカバーを提供することを目的とする。 SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and to provide an airbag cover that can stably break the surface layer along the tear portion when the tear portion of the substrate is broken. .

本発明に係るエアバッグカバーでは、基材と、該基材の表面側に接着された表皮層と、を有する構成として、折り畳まれたエアバッグを覆い、かつ、膨張する前記エアバッグにより、前記基材の裏面側から表面側に凹む凹部を配設させて構成されるテア部、を破断させて突出用開口を形成して、該突出用開口から前記エアバッグを突出させる構成のエアバッグカバーであって、
前記表皮層が、前記基材に対して、前記テア部の前記凹部の直上の両側における凹部近傍領域を、前記凹部の直上の凹部配設領域、及び、前記凹部近傍領域の周囲の周縁領域より、接着強度を向上させて、前記基材に接着されて、配設されていることを特徴とする。 The airbag cover according to the present invention includes a base material and a skin layer adhered to the surface side of the base material. An airbag cover having a configuration in which a projection opening is formed by breaking a tear portion configured by arranging a concave portion recessed from the back surface side to the front surface side of a base material, and the airbag is projected from the projection opening. and
The skin layer is attached to the base material so that the areas near the recess on both sides of the tear portion directly above the recess are less than the recess disposition area directly above the recess and the peripheral area around the recess near the area. , the adhesive strength is improved, and it is adhered to the base material and disposed.

本発明に係るエアバッグカバーでは、膨張するエアバッグに押されて基材のテア部が破断する際、そのテア部の凹部の直上における表皮層の凹部配設領域では、隣接する凹部近傍領域より、基材に対する接着力を低くしていることから、基材に対し、ずれて伸び、そして、破断し易いように薄くなり、かつ、薄くなる領域が凹部の直上付近の狭い幅寸法の領域として応力集中し易いことから、表皮層の飛散を防止して、基材のテア部の破断ラインと一致しつつ、迅速に破断する。勿論、接着力の高い凹部近傍領域は、凹部配設領域に隣接しているものの、その周縁には、凹部配設領域と同様な接着力を低くした周縁領域が配設されるものであり、表皮層における凹部配設領域に隣接する部位の全域を、接着力を高くするわけで無い。そのため、凹部近傍領域だけを、単に、他の凹部配設領域や周縁領域に比べて、表皮層の基材に対する接着力を高めるだけでよく、簡便に、表皮層を基材に接着させることが可能となる。 In the airbag cover according to the present invention, when the tear portion of the base material is broken by being pushed by the inflating airbag, the recessed portion of the skin layer directly above the recessed portion of the tear portion is more likely to be damaged than the adjacent recessed portion. , Since the adhesive strength to the base material is low, the base material is stretched out and becomes thin so that it can be easily broken. Since stress is easily concentrated, scattering of the skin layer is prevented, and the tear portion of the base material is aligned with the breaking line and quickly broken. Of course, although the area near the recess with high adhesive strength is adjacent to the area provided with the recess, a peripheral edge area with low adhesive strength similar to that of the area provided with the recess is provided at the periphery of the area. It is not the case that the entire region of the skin layer adjacent to the recessed region is increased in adhesive strength. Therefore, it is only necessary to increase the adhesive strength of the skin layer to the substrate only in the region near the recess compared to the other regions where the recess is provided and the peripheral region, and the skin layer can be easily adhered to the substrate. It becomes possible.

したがって、本発明に係るエアバッグカバーでは、基材のテア部の破断時、表皮層もテア部に沿って安定して破断させることができる。 Therefore, in the airbag cover according to the present invention, when the tear portion of the substrate is broken, the skin layer can also be stably broken along the tear portion.

そして、本発明に係るエアバッグカバーでは、前記凹部近傍領域に粘着テープが貼着されて、前記凹部近傍領域が、前記凹部配設領域及び前記周縁領域より、接着強度を向上させていることが望ましい。 In the airbag cover according to the present invention, an adhesive tape is attached to the area near the recess so that the area near the recess has a higher adhesive strength than the area provided with the recess and the peripheral edge area. desirable.

このような構成では、表皮層を基材に接着させる際、単に、余分に、凹部近傍領域に粘着テープを貼着するだけでよいことから、表皮層を基材に接着させる作業を、簡便に行うことができる。 With such a configuration, when the skin layer is adhered to the base material, it is sufficient to simply attach an extra adhesive tape to the region near the recess, so that the work of adhering the skin layer to the base material can be easily performed. It can be carried out.

本発明に係るエアバッグカバーでは、基材に設けるテア部の前記凹部は、上方から見て、中央の一文字状の部位の両端からそれぞれＶ字状に拡開する両端Ｙ字状として、配設させたり、あるいは、上方から見て、略Ｈ字状に配設させてもよい。ちなみに、凹部が、上方から見て、中央の一文字状の部位の両端からそれぞれＶ字状に拡開する両端Ｙ字状に配設されていれば、中央の一文字状の部位の両側における一対の中央ドア部と、中央の一文字状の部位の両端における一対の三角板状の三角ドア部と、が開いて、突出用開口が形成されることとなり、上方から見て、略Ｈ字状に配設されていれば、略Ｈ字の両側の縦棒部位の間における略Ｈ字の横棒部位の両側のドア部が、観音扉のように開いて、突出用開口が形成されることとなる。 In the airbag cover according to the present invention, the recessed portion of the tear portion provided in the base material is arranged in a Y-shape at both ends of the single-character-shaped portion in the center, which expands in a V-shape from both ends when viewed from above. Alternatively, they may be arranged in a substantially H shape when viewed from above. Incidentally, if the concave portions are arranged in a Y-shape that expands in a V shape from both ends of the central linear portion when viewed from above, a pair of concave portions on both sides of the central linear portion A central door portion and a pair of triangular plate-shaped triangular door portions at both ends of the central linear portion are opened to form an opening for projection, which is arranged in a substantially H shape when viewed from above. If so, the door portions on both sides of the substantially H-shaped horizontal bar portion between the vertical bar portions on both sides of the substantially H-shaped portion are opened like a double door to form an opening for projection.

また、本発明に係るエアバッグカバーでは、前記表皮層が、表面側に配設されるファブリックと、該ファブリックを接着させたシート状のクッション層と、を備えて構成され、
前記ファブリックが、前記凹部配設領域の裏面側に、前記表皮層の破断を促進するための強度低下用加工部、を配設させていることが望ましい。 Further, in the airbag cover according to the present invention, the skin layer includes a fabric disposed on the surface side and a sheet-like cushion layer to which the fabric is adhered,
It is desirable that the fabric has a strength-reducing processed portion for promoting breakage of the skin layer on the back surface side of the recessed portion.

このような構成では、表皮層のファブリックが、円滑に破断し難い材料としていても、応力集中し易い強度低下用の加工部を、表皮層の破断の起点や破断の伝播の案内に利用できて、表皮層における突出用開口の形成が円滑に行なえる。また、織物や編物等からなるファブリックが、表皮層の表面側に配設されることから、エアバッグカバーの触感や意匠性を良好にすることが可能となる。 In such a configuration, even if the fabric of the skin layer is made of a material that is difficult to break smoothly, the processed portion for reducing strength, where stress is likely to concentrate, can be used as a starting point of breakage in the skin layer and as a guide for propagation of breakage. , the formation of the protrusion opening in the skin layer can be performed smoothly. Further, since the fabric made of woven fabric, knitted fabric, or the like is arranged on the surface side of the skin layer, it is possible to improve the feel and design of the airbag cover.

また、本発明に係るエアバッグカバーにおいて、前記テア部の凹部が、上方から見て、略Ｈ字状に配設されており、そして、前記表皮層が、表面側に配設されるファブリックと、該ファブリックを接着させたシート状のクッション層と、を備えて構成されて、前記ファブリックが、裏面側に、前記表皮層の破断を促進するための強度低下用加工部、を配設させる場合には、前記加工部は、前記凹部の略Ｈ字の横棒部位に沿い、かつ、前記凹部の略Ｈ字の横棒部位における直上付近における前記凹部配設領域内を含めて、複数、並設される構成としてもよい。 Further, in the airbag cover according to the present invention, the concave portion of the tear portion is arranged in a substantially H shape when viewed from above, and the skin layer is arranged on the surface side of the fabric. and a sheet-like cushion layer to which the fabric is adhered, and the fabric is provided with a strength-reducing processed portion for promoting breakage of the skin layer on the back side. a plurality of the processed portions are arranged in parallel along the substantially H-shaped lateral bar portion of the recessed portion and in the vicinity of the substantially H-shaped lateral bar portion of the recessed portion, including within the recessed portion arrangement region; It is good also as a structure provided.

このような構成では、強度低下用の加工部の配設方向をテア部の略Ｈ字の横棒部位に沿うように配置させて、表皮層を基材の表面側に接着させれば、テア部のその横棒部位の直上位置（凹部の幅方向の中央）に精度よく強度低下用の加工部が配置されなくとも、テア部の横棒部位の直上近傍（凹部の幅方向の中央近傍であって、凹部配設領域内）に、いずれかの強度低下用の加工部を配置させることができる。そのため、エアバッグの膨張に伴ない、基材のテア部が破断してドア部が押し開かれる際、テア部の横棒部位の直上近傍（凹部配設領域内）の表皮層の強度低下用の加工部が、応力集中し易くなって、容易に破断し、表皮層の破断を迅速かつ円滑に伝播させることができる。すなわち、表皮層の強度低下用加工部がテア部の横棒部位の直上位置（凹部の幅方向の中央）に、精度よく、配置されていなくとも、エアバッグの膨張時、表皮層が円滑に破断して、突出用開口を形成し、その突出用開口からエアバッグを突出させることができることから、表皮層の基材への配置時の位置合わせを、簡便に行うことができる。 In such a configuration, if the direction of arrangement of the processed portion for reducing strength is arranged along the substantially H-shaped horizontal bar portion of the tear portion and the skin layer is adhered to the surface side of the base material, tearing can be achieved. Even if the machined portion for reducing strength is not placed precisely at the position directly above the horizontal bar portion of the tear portion (the center in the width direction of the recess), It is possible to arrange any of the processed parts for reducing the strength in the recessed area. Therefore, when the tear portion of the base material breaks and the door portion is pushed open due to the expansion of the airbag, the strength of the skin layer in the vicinity of the horizontal bar portion of the tear portion (within the concave portion arrangement area) is reduced. stress concentrates easily in the processed portion of the above, so that it can be easily broken, and the breakage of the skin layer can be quickly and smoothly propagated. That is, even if the processed portion for reducing the strength of the skin layer is not precisely positioned directly above the horizontal bar portion of the tear portion (the center of the recess in the width direction), the skin layer can be smoothly expanded when the airbag is inflated. Since the airbag can be protruded from the protrusion opening through which the protrusion opening is formed by breaking, it is possible to easily align the skin layer with the base material when arranging it.

なお、テア部の縦棒部位では、複数の強度低下用加工部と直交する状態となるが、テア部の縦棒部位の両側に隣接する領域は、表皮層を基材に対して接着強度を高めて接着させる凹部近傍領域としており、表皮層におけるテア部縦棒部位の凹部配設部位では、テア部の縦棒部位の破断に追従し、並設されている強度低下用の加工部を横断しつつ、表皮層が破断されることとなることから、表皮層の飛散を防止しつつ、突出用開口を円滑に形成することができる。 In addition, in the vertical bar part of the tear part, it is in a state orthogonal to the plurality of strength reduction processing parts, but in the areas adjacent to both sides of the vertical bar part of the tear part, the adhesion strength of the skin layer to the base material is increased. It is a region near the recessed portion where the adhesion is enhanced, and in the recessed portion of the tear portion vertical rod portion in the skin layer, it follows the breakage of the tear portion vertical rod portion and traverses the parallelly arranged processed portion for reducing strength. However, since the skin layer is broken, the protrusion opening can be formed smoothly while preventing the skin layer from scattering.

また、テア部の凹部が、上方から見て、略Ｈ字状に配設されているエアバッグカバーの場合、前記強度低下用加工部は、格子状に配設されていてもよい。 Further, in the case of an airbag cover in which the concave portion of the tear portion is arranged in a substantially H-shape when viewed from above, the strength-reducing processed portion may be arranged in a grid pattern.

すなわち、ファブリックの裏面側の強度低下用の加工部は、前記凹部の略Ｈ字の横棒部位における直上付近と、前記凹部の略Ｈ字の縦棒部位における直上付近と、の前記凹部配設領域内を含めて、前記凹部の略Ｈ字の横棒部位に沿う横方向加工部と、前記凹部の略Ｈ字の縦棒部位に沿う縦方向加工部と、を、それぞれ、複数並設させて、格子状に配設させてもよい。 That is, the processed portion for reducing the strength on the back side of the fabric is arranged in the recessed portion near immediately above the approximately H-shaped horizontal bar portion of the recessed portion and near directly above the approximately H-shaped vertical portion of the recessed portion. A plurality of laterally processed portions along the substantially H-shaped horizontal rod portion of the recess and a plurality of vertically processed portions along the substantially H-shaped vertical rod portion of the recessed portion are arranged side by side, including within the region. Alternatively, they may be arranged in a grid pattern.

このような構成では、テア部の略Ｈ字の横棒部位に沿うような強度低下用加工部（横方向加工部）の他に、テア部の略Ｈ字の縦棒部位に沿う強度低下用加工部（縦方向加工部）も並設されていることから、基材のテア部の破断により、略Ｈ字の横棒部位の両側のドア部が開く構成であっても、テア部の横棒部位と縦棒部位とに対応する凹部配設領域内において、表皮層におけるドア部の先端の部位に略平行な横方向加工部と、ドア部の両縁側の部位と略平行となる部位の縦方向加工部も、共に、円滑に破断することが可能となって、一層、基材と表皮層とが円滑に破断ラインを一致させて破断して、ドア部を開かせて形成する突出用開口の開口形状を安定させることができ、エアバッグの突出形態を安定させることができる。 In such a configuration, in addition to the strength-reducing processed portion (horizontal direction processed portion) along the substantially H-shaped horizontal bar portion of the tear portion, the strength-reducing portion along the substantially H-shaped vertical bar portion of the tear portion is provided. Since the processed portions (vertical processed portions) are also arranged in parallel, even if the door portions on both sides of the substantially H-shaped horizontal bar portion are opened by breaking the tear portion of the substrate, In the recessed area corresponding to the bar portion and the vertical bar portion, there are a laterally processed portion substantially parallel to the front end portion of the door portion in the skin layer and a portion substantially parallel to both edge side portions of the door portion. Both of the longitudinally processed parts can be broken smoothly, and the base material and the skin layer are broken even more smoothly by aligning the breaking lines, and the door part is opened to form a protruding part. The opening shape of the opening can be stabilized, and the projection form of the airbag can be stabilized.

本発明に係る一実施形態のエアバッグカバーを使用するエアバッグ装置の概略斜視図である。1 is a schematic perspective view of an airbag device using an airbag cover of one embodiment according to the present invention; FIG. 実施形態のエアバッグ装置の概略縦断面図である。1 is a schematic longitudinal sectional view of an airbag device according to an embodiment; FIG. 実施形態のエアバッグカバーの表皮層に設けた強度低下用加工部を示す概略縦断面図である。FIG. 4 is a schematic vertical cross-sectional view showing a strength-lowering processed portion provided on the skin layer of the airbag cover of the embodiment; 実施形態のエアバッグカバーにおけるテア部を示す概略平面図である。FIG. 4 is a schematic plan view showing a tear portion in the airbag cover of the embodiment; 実施形態のエアバッグカバーが突出用開口を形成した状態を示す概略斜視図である。FIG. 4 is a schematic perspective view showing a state in which the airbag cover of the embodiment forms a projection opening; 実施形態の変形例のエアバッグカバーを示す概略平面図である。It is a schematic plan view showing an airbag cover of a modification of the embodiment. 図６に示す変形例のエアバッグカバーが突出用開口を形成した状態を示す概略斜視図である。FIG. 7 is a schematic perspective view showing a state in which the airbag cover of the modified example shown in FIG. 6 has a protrusion opening; 実施形態の他の変形例のエアバッグカバーにおけるテア部を示す概略断面図である。FIG. 11 is a schematic cross-sectional view showing a tear portion in an airbag cover of another modified example of the embodiment; 図８に示すエアバッグカバーの概略平面図である。FIG. 9 is a schematic plan view of the airbag cover shown in FIG. 8; 実施形態のさらに他の変形例のエアバッグカバーを示す概略平面図である。FIG. 11 is a schematic plan view showing an airbag cover of still another modification of the embodiment; 実施形態のさらに他の変形例のエアバッグカバーの概略縦断面図である。FIG. 11 is a schematic vertical cross-sectional view of an airbag cover of still another modification of the embodiment;

以下、本発明の一実施形態を図面に基づいて説明すると、実施形態のエアバッグカバー２０は、図１，２に示すように、車両１のインストルメントパネル（インパネ）２に配設されて、助手席用のエアバッグ装置１０に使用されている。インパネ２は、車両１の前席の前方側に配設されて、運転席の前方側の運転席側部２ａ、助手席前方の助手席側部２ｂ、及び、図示しないセンターコンソールの前方側の中央部２ｃ、を備えて構成され、助手席側部２ｂの部位を、エアバッグ１１（図２参照）の膨張時に、エアバッグ１１を円滑に突出させるように突出用開口６０を形成するエアバッグカバー２０の部位として、構成されている。 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. It is used in an airbag device 10 for a passenger seat. The instrument panel 2 is arranged in front of the front seats of the vehicle 1, and includes a driver's seat side portion 2a in front of the driver's seat, a passenger's seat side portion 2b in front of the passenger's seat, and a center console (not shown) on the front side. The passenger seat side portion 2b is formed with a projecting opening 60 for smoothly projecting the airbag 11 (see FIG. 2) when the airbag 11 is inflated. It is configured as a portion of the cover 20 .

エアバッグ装置１０は、図２に示すように、膨張用ガスＧを流入させて、助手席搭乗者を保護するように、収納部位としてのケース１５から、膨張しつつ突出用開口６０を経て、突出するエアバッグ１１と、エアバッグ１１に膨張用ガスＧを供給するインフレーター１４と、折り畳まれて収納されたエアバッグ１１を覆うエアバッグカバー２０と、エアバッグ１１及びインフレーター１４を収納して保持するケース１５と、を備えて構成されている。ケース１５は、図示しないブラケットにより、車両１のボディ側に連結され、エアバッグカバー２０を設けたインパネ２は、外周縁付近等を車両１のボディ側に保持されるとともに、エアバッグカバー２０の後述するケース側部２５を、ケース１５の側壁部１７に連結させている。 As shown in FIG. 2, the airbag device 10 is inflated from a case 15 serving as a housing portion through a projecting opening 60 to protect an occupant in the front passenger seat by introducing inflation gas G into the airbag device 10. The protruding airbag 11, the inflator 14 for supplying inflation gas G to the airbag 11, the airbag cover 20 covering the folded and stored airbag 11, the airbag 11 and the inflator 14 are stored and held. and a case 15 for The case 15 is connected to the body side of the vehicle 1 by a bracket (not shown). A case side portion 25 , which will be described later, is connected to the side wall portion 17 of the case 15 .

エアバッグ１１は、膨張完了形状を、後端を助手席搭乗者を受け止める受止面として前部側にかけて先細り状とする略四角錐台形状とし、前端側の下面に、膨張用ガスＧを流入させる流入用開口１１ａを備えている。流入用開口１１ａは、円形に開口し、その流入用開口１１ａの周縁は、エアバッグ１１内に配設される略四角環状のリテーナ１２により押えられて、ケース１５の底壁部１６に取り付けられている。リテーナ１２は、略四角環状の四隅に、下方に延びるボルト１２ａを突設させている。各ボルト１２ａは、エアバッグ１１の流入用開口１１ａの周縁、ケース１５の後述する底壁部１６、及び、インフレーター１４の後述するフランジ部１４ｃを貫通して、ナット１３を締結されることにより、ケース１５の底壁部１６に、エアバッグ１１とインフレーター１４とを取付固定している。 The airbag 11 has an approximately truncated quadrangular pyramid shape in which the rear end serves as a receiving surface for receiving an occupant in the front passenger seat and tapers toward the front, and inflation gas G flows into the lower surface on the front end side. It has an inflow opening 11a for allowing the water to flow. The inflow opening 11a has a circular shape, and the peripheral edge of the inflow opening 11a is held by a substantially square annular retainer 12 disposed in the airbag 11 and attached to the bottom wall portion 16 of the case 15. ing. The retainer 12 has downwardly extending bolts 12a protruding from four corners of a substantially rectangular ring shape. Each bolt 12a penetrates the periphery of the inflow opening 11a of the airbag 11, the bottom wall portion 16 of the case 15, which will be described later, and the flange portion 14c, which will be described later of the inflator 14, and is fastened with the nut 13. The airbag 11 and the inflator 14 are attached and fixed to the bottom wall portion 16 of the case 15 .

インフレーター１４は、略円柱状として上部に膨張用ガスＧを吐出するガス吐出口１４ｂを設けた本体部１４ａと、本体部１４ａの外周面から突出して、リテーナ１２の各ボルト１２ａを貫通させるフランジ部１４ｃと、を備えて構成されている。 The inflator 14 includes a main body portion 14a having a substantially cylindrical shape and having a gas discharge port 14b for discharging the inflation gas G at its upper portion, and a flange portion protruding from the outer peripheral surface of the main body portion 14a and through which the bolts 12a of the retainer 12 pass. 14c.

ケース１５は、略長方形板状の底壁部１６と、底壁部１６の外周縁から上方に延びる略四角筒形状の側壁部１７と、を備えて構成されている。底壁部１６には、インフレーター１４の本体部１４ａを下方から挿入させる挿通孔１６ａが開口され、挿通孔１６ａの周縁には、リテーナ１２の各ボルト１２ａを貫通させる貫通孔（図符号省略）が配設されており、エアバッグ１１の流入用開口１１ａの周縁やインフレーター１４のフランジ部１４ｃが、リテーナ１２のボルト１２ａとナット１３とにより、ケース１５の底壁部１６に取付固定されている。側壁部１７には、エアバッグカバー２０の後述するケース側部２５の係止孔２６に係止させる係止フック１７ａが、形成されている。係止フック１７ａは、側壁部１７の前後の部位に配設されるとともに、左右方向に沿って複数並設されている。 The case 15 includes a substantially rectangular plate-shaped bottom wall portion 16 and a substantially rectangular cylindrical side wall portion 17 extending upward from the outer peripheral edge of the bottom wall portion 16 . The bottom wall portion 16 has an insertion hole 16a into which the main body portion 14a of the inflator 14 is inserted from below. The periphery of the inflow opening 11a of the airbag 11 and the flange portion 14c of the inflator 14 are attached and fixed to the bottom wall portion 16 of the case 15 by the bolts 12a and nuts 13 of the retainer 12. As shown in FIG. The side wall portion 17 is formed with a locking hook 17a that is locked to a locking hole 26 of a case side portion 25 of the airbag cover 20, which will be described later. The locking hooks 17a are arranged in the front and rear portions of the side wall portion 17, and are arranged side by side along the left-right direction.

エアバッグカバー２０は、図１～５に示すように、基材２１と、接着剤を利用して基材２１の表面側に接着された表皮層３２と、を備えて構成されている。基材２１は、ポリプロピレン等の合成樹脂からなる。基材２１と表皮層３２とは、インパネ２の運転席側部２ａや中央部２ｃにも同様に配設されているが、助手席側部２ｂのエアバッグカバー２０の部位では、ケース１５と連結されるオレフィン系熱可塑性樹脂等からなる連結部材２４が、配設されている。 As shown in FIGS. 1 to 5, the airbag cover 20 includes a base material 21 and a skin layer 32 adhered to the surface side of the base material 21 using an adhesive. The base material 21 is made of synthetic resin such as polypropylene. The base material 21 and the skin layer 32 are similarly arranged on the driver seat side portion 2a and the central portion 2c of the instrument panel 2, but the airbag cover 20 on the passenger seat side portion 2b is provided with the case 15 and the skin layer 32. A connecting member 24 made of an olefinic thermoplastic resin or the like to be connected is provided.

連結部材２４は、ケース１５の側壁部１７を囲むように配設される略四角筒形状のケース側部２５と、基材２１の裏面側に結合されるドア側部２８（Ｆ，Ｂ，Ｌ，Ｒ）（図２，５参照）と、を備えて構成されている。ケース側部２５には、前壁部２５ａと後壁部２５ｂとに、ケース１５の既述の係止フック１７ａを挿入させる係止孔２６が、形成されている。ドア側部２８（Ｆ，Ｂ）は、前後に離れて、基材２１の後述する中央ドア部２２（Ｆ，Ｂ）の裏面側に溶着されている。ドア側部２８（Ｌ，Ｒ）は、左右に離れて、基材２１の後述する三角ドア部２３（Ｌ，Ｒ）の裏面側に溶着されている。各ドア側部２８の上面側には、複数の突条の溶着部２８ａが形成され、溶着部２８ａを利用して、ドア側部２８は、振動溶着により、中央ドア部２２や三角ドア部２３の裏面側に、溶着されている。また、ドア側部２８（Ｆ，Ｂ，Ｌ，Ｒ）におけるケース側部２５の前壁部２５ａや後壁部２５ｂ、あるいは、左右の側壁部２５ｃの近傍には、ドア側部２８がドア部２２，２３とともに容易に撓んで開くように、薄肉としたヒンジ部２９が、配設されている。 The connecting member 24 is composed of a case side portion 25 having a substantially square tube shape disposed so as to surround the side wall portion 17 of the case 15 and a door side portion 28 (F, B, L , R) (see FIGS. 2 and 5). Locking holes 26 into which the aforementioned locking hooks 17a of the case 15 are inserted are formed in the front wall portion 25a and the rear wall portion 25b of the case side portion 25 . The door side portions 28 (F, B) are welded to the rear surface side of the central door portion 22 (F, B) of the base material 21, which will be described later. The door side portions 28 (L, R) are welded to the rear surface side of the triangular door portions 23 (L, R) of the substrate 21, which will be described later. A plurality of welded protrusions 28a are formed on the upper surface side of each door side portion 28, and the door side portions 28 are formed by vibration welding using the welded portions 28a. is welded to the back side of the Further, the door side portions 28 (F, B, L, R) are located near the front wall portion 25a and the rear wall portion 25b of the case side portion 25 or the left and right side wall portions 25c. A thin hinge portion 29 is provided so that it can be easily bent and opened together with 22 and 23 .

基材２１における連結部材２４の配設部位には、折り畳まれたエアバッグ１１を覆い、かつ、膨張するエアバッグ１１によって押されて、基材２１の突出用開口６０を形成するように、開くドア部２２（Ｆ，Ｂ），２３（Ｌ，Ｒ）が配設されている。 The connection member 24 is provided on the base material 21 at the position where the connection member 24 is arranged. Door portions 22 (F, B) and 23 (L, R) are provided.

基材２１の突出用開口６０は、ドア部２２（Ｆ，Ｂ），２３（Ｌ，Ｒ）の周縁に設けられるテア部４０を破断させて形成される。テア部４０は、上方から見て、中央の左右方向に沿って延びる一文字状の部位４１と、一文字状部位４１の両端からそれぞれＶ字状に拡開するＶ字状部位４２（Ｌ，Ｒ）と、を有した両端Ｙ字状として、基材２１の裏面側から表面側に凹む凹部（実施形態の場合には略Ｖ溝）４０ａ、を配設させて形成されている。このテア部４０が破断すると、一文字状部位４１の前後両側の中央ドア部２２Ｆ，２２Ｂが、前後両側に開くとともに、左右のＶ字状部位４２（Ｌ，Ｒ）に囲まれた左右の三角ドア部２３Ｌ，２３Ｒが、左右両側に開く構成としている。なお、中央ドア部２２（Ｆ，Ｂ）の裏面側には、既述した連結部材２４のドア側部２８（Ｆ，Ｂ）が溶着され、三角ドア部２３Ｌ，２３Ｒの裏面側には、既述した連結部材のドア側部２８（Ｌ，Ｒ）が溶着されている。 The projecting opening 60 of the base material 21 is formed by breaking the tear portion 40 provided on the periphery of the door portions 22 (F, B) and 23 (L, R). The tear portion 40 has a linear portion 41 extending in the left-right direction at the center and V-shaped portions 42 (L, R) extending in a V shape from both ends of the linear portion 41 when viewed from above. , and a concave portion (substantially V groove in the case of the embodiment) 40a recessed from the back side to the front side of the base material 21 is formed. When the tear portion 40 is broken, the center door portions 22F and 22B on both front and rear sides of the linear portion 41 open in both front and rear directions, and the left and right triangular doors surrounded by the left and right V-shaped portions 42 (L, R) are opened. The portions 23L and 23R are configured to open to both the left and right sides. The door side portions 28 (F, B) of the connecting member 24 described above are welded to the back side of the central door portion 22 (F, B), and the triangular door portions 23L, 23R are already attached to the back side of the triangular door portions 23L, 23R. The door side portions 28 (L, R) of the connecting member described above are welded.

表皮層３２は、表面側に配設される表皮としてのファブリック３３と、ファブリック３３を接着させたシート状のクッション層３７と、を備えて構成されている。ファブリック３３は、ポリエステル等の糸を経糸ＶＳと緯糸ＨＳとに使用して織った織物、としている。クッション層３７は、ポリプロピレン等からなるクッション材から形成されている。 The skin layer 32 includes a fabric 33 as a skin disposed on the surface side, and a sheet-like cushion layer 37 to which the fabric 33 is adhered. The fabric 33 is a woven fabric woven using yarns such as polyester as the warp yarn VS and the weft yarn HS. The cushion layer 37 is made of a cushioning material such as polypropylene.

そして、表皮層３２は、基材２１に対して接着されるものの、テア部４０の凹部４０ａの直上の両側における凹部近傍領域５４を、凹部４０ａの直上の凹部配設領域５２や、凹部近傍領域５４の周囲の周縁領域５６、より、接着強度を向上させて、基材２１に接着されて、配設されている。実施形態の場合、凹部近傍領域５４に粘着テープ５０が貼着されて、凹部近傍領域５４が、凹部配設領域５２及び周縁領域５６より、接着強度を向上させている。 Although the skin layer 32 is adhered to the base material 21 , the recessed portion adjacent regions 54 on both sides of the tear portion 40 directly above the recessed portion 40 a are replaced with the recessed portion disposing regions 52 directly above the recessed portion 40 a and the recessed portion adjacent regions. A peripheral edge region 56 around 54 is arranged to be adhered to the base material 21 with improved adhesive strength. In the case of the embodiment, the adhesive tape 50 is attached to the recessed portion neighboring region 54 so that the recessed portion neighboring region 54 has higher adhesive strength than the recessed portion arrangement region 52 and the peripheral edge region 56 .

なお、凹部配設領域５２は、幅寸法ＷＣ（図４参照）を、テア部４０の凹部４０ａの幅寸法ＷＴ（図２参照）と同等として、１～５ｍｍ程度の範囲内の３ｍｍとし、凹部近傍領域５４は、幅寸法ＷＮ（図４参照）を、凹部配設領域５２の幅寸法ＷＣより大きくして（ＷＮ＞ＷＣ）、３～１５ｍｍ程度の範囲内の１０ｍｍとしている。 The width dimension WC (see FIG. 4) of the recessed portion arrangement region 52 is set to 3 mm within a range of about 1 to 5 mm, which is equivalent to the width dimension WT (see FIG. 2) of the recessed portion 40a of the tear portion 40. The width dimension WN (see FIG. 4) of the neighboring region 54 is set larger than the width dimension WC of the recessed region 52 (WN>WC) to 10 mm within the range of about 3 to 15 mm.

また、実施形態のファブリック３３には、破断を促進するために、肉厚を低減させた強度低下用加工部３４、を配設させている。実施形態の場合、強度低下用加工部３４は、ミリングや超音波カッタ、あるいは、加熱した刃等を利用して、断面積を減少させるように（肉厚を低減させるように）、凹溝により形成されている。このような加工部３４は、凹溝の他、ファブリック３３の引張強度を低減させればよいことから、切欠き部や凹部でもよく、さらに、経糸ＶＳや緯糸ＨＳの一部を、切断したり、削る等して細くするようにしてもよい。そして、実施形態の場合には、強度低下用加工部３４は、テア部４０の凹部４０ａにおける左右方向に直線状に延びた一文字状部位４１の直上付近とＶ字状部位４２Ｌ，４２Ｒの直上付近とに配設されるとともに、それぞれ、テア部４０の一文字状部位４１とＶ字状部位４２Ｌ，４２Ｒとに沿うように、配設されている。換言すれば、強度低下用加工部３４は、凹部配設領域５２の幅方向の中央付近に配置されて、凹部配設領域５２の全域にわたって延びるような線状に、配設されている。勿論、強度低下用加工部３４は、ファブリック３３の表面側の意匠に影響を与えないように、深さや幅寸法等が考慮されて、加工されている。 Further, the fabric 33 of the embodiment is provided with a strength-reducing processing portion 34 having a reduced thickness in order to promote breakage. In the case of the embodiment, the strength-reducing processed portion 34 is formed by a concave groove so as to reduce the cross-sectional area (to reduce the thickness) using milling, an ultrasonic cutter, a heated blade, or the like. formed. Such a processed portion 34 may be a notch portion or a recessed portion because it is sufficient to reduce the tensile strength of the fabric 33 in addition to the concave groove. , may be thinned by shaving or the like. In the case of the embodiment, the strength-lowering processed portion 34 is formed in the vicinity directly above the straight line-shaped portion 41 and the V-shaped portions 42L and 42R in the concave portion 40a of the tear portion 40, which extends linearly in the horizontal direction. and along the linear portion 41 and the V-shaped portions 42L and 42R of the tear portion 40, respectively. In other words, the strength-reducing processed portion 34 is arranged in the vicinity of the widthwise center of the recessed portion providing region 52 and is arranged in a linear shape extending over the entire recessed portion providing region 52 . Of course, the strength-lowering processed portion 34 is processed in consideration of the depth, width, and the like so as not to affect the design of the surface side of the fabric 33 .

なお、テア部４０の凹部４０ａは、幅寸法ＷＴ（図２参照）を１～５ｍｍ程度の範囲内の約３ｍｍとし、強度低下用加工部３４の幅寸法ＷＭ（図３参照）は、実施形態の場合、凹部４０ａの幅寸法ＷＴより小さくして、０．５～３ｍｍ程度の範囲内の約１ｍｍとしている。 The width dimension WT (see FIG. 2) of the recessed portion 40a of the tear portion 40 is approximately 3 mm within a range of approximately 1 to 5 mm, and the width dimension WM (see FIG. In the case of , the width is made smaller than the width dimension WT of the recess 40a, and is about 1 mm within the range of about 0.5 to 3 mm.

実施形態のエアバッグカバー２０は、強度低下用加工部３４を設けたファブリック３３を、接着剤を塗布したクッション層３７に対して、真空成形により吸着させて表皮層３２を形成しつつ、接着剤を塗布し、かつ、粘着テープ５０を貼着させた基材２１に、表皮層３２を圧着する。ついで、テア部４０をエンドミル加工等して形成し、連結部材２４のドア側部２８（Ｆ，Ｂ）を中央ドア部２２（Ｆ，Ｂ）に溶着し、ドア側部２８（Ｌ，Ｒ）を三角ドア部（Ｌ，Ｒ）に溶着すれば、エアバッグカバー２０を設けたインパネ２を形成することができる。 In the airbag cover 20 of the embodiment, the fabric 33 provided with the strength-reducing processed portion 34 is vacuum-formed to adhere to the cushion layer 37 coated with the adhesive to form the skin layer 32, and the adhesive is applied to the cushion layer 37. is applied, and the skin layer 32 is pressure-bonded to the base material 21 to which the adhesive tape 50 is adhered. Next, the tear portion 40 is formed by end milling or the like, the door side portions 28 (F, B) of the connecting member 24 are welded to the central door portion 22 (F, B), and the door side portions 28 (L, R) are welded. are welded to the triangular door portions (L, R), the instrument panel 2 provided with the airbag cover 20 can be formed.

その後、エアバッグ１１内にリテーナ１２を収納させた状態で、エアバッグ１１を折り畳み、図示しないラッピング材により、折り畳んだエアバッグ１１を包み、そのエアバッグ１１をケース１５内に収納する。この時、リテーナ１２の各ボルト１２ａは、ケース１５の底壁部１６から下方に突出する。ついで、ケース１５の挿通孔１６ａに対して、下方から、インフレーター１４の本体部１４ａを挿入させて、リテーナ１２の各ボルト１２ａをインフレーター１４のフランジ部１４ｃに貫通させて、各ボルト１２ａにナット１３を締結すれば、ケース１５に、折り畳んだエアバッグ１１とインフレーター１４とを取付固定することができる。 After that, the airbag 11 is folded with the retainer 12 housed in the airbag 11, wrapped with a wrapping material (not shown), and the airbag 11 is housed in the case 15. - 特許庁At this time, each bolt 12 a of the retainer 12 protrudes downward from the bottom wall portion 16 of the case 15 . Next, the body portion 14a of the inflator 14 is inserted from below into the insertion hole 16a of the case 15, the bolts 12a of the retainer 12 are passed through the flange portion 14c of the inflator 14, and the nuts 13 are attached to the bolts 12a. By fastening , the folded airbag 11 and the inflator 14 can be attached and fixed to the case 15 .

その後、インパネ２を車両１に固定するとともに、エアバッグカバー２０のケース側部２５の係止孔２６に、ケース１５の係止フック１７ａを挿入係止させ、所定の制御装置から延びる作動用信号の入力用の図示しないリード線を、インフレーター１４に結線すれば、エアバッグ装置１０を車両１に搭載することができる。 After that, the instrument panel 2 is fixed to the vehicle 1, and the locking hook 17a of the case 15 is inserted and locked into the locking hole 26 of the case side portion 25 of the airbag cover 20, and an operation signal extending from a predetermined control device is generated. The airbag device 10 can be mounted on the vehicle 1 by connecting a lead wire (not shown) for inputting to the inflator 14 .

このように車両１に搭載したエアバッグ装置１０では、膨張用ガスＧを吐出するようにインフレーター１４が作動すれば、エアバッグ１１が膨張用ガスＧを流入させて膨張する。そして、エアバッグ１１の膨張時、基材２１がテア部４０を破断させて、テア部４０における一文字状部位４１の前後両側の中央ドア部２２Ｆ，２２Ｂを開かせるとともに、テア部４０のＶ字状部位４２Ｌ，４２Ｒで囲まれた三角ドア部２３Ｌ，２３Ｒを開かせて、突出用開口６０を開口させ、突出用開口６０からエアバッグ１１が突出することとなる。 In the airbag device 10 mounted on the vehicle 1 as described above, when the inflator 14 operates to discharge the inflation gas G, the airbag 11 is inflated by the inflow of the inflation gas G. When the airbag 11 is inflated, the base material 21 breaks the tear portion 40 to open the central door portions 22F and 22B on both front and rear sides of the linear portion 41 of the tear portion 40, and the tear portion 40 is V-shaped. The triangular door portions 23L, 23R surrounded by the shaped portions 42L, 42R are opened to open the projection opening 60, and the airbag 11 projects from the projection opening 60.

そして、実施形態のエアバッグカバー２０では、膨張するエアバッグ１１に押されて基材２１のテア部４０が破断する際、そのテア部４０の凹部４０ａの直上における表皮層３２の凹部配設領域５２では、隣接する凹部近傍領域５４より、基材２１に対する接着力を低くしていることから、基材２１に対し、ずれて伸び、そして、破断し易いように薄くなり、かつ、薄くなる領域が凹部４０ａの直上付近の狭い幅寸法ＷＣの領域として応力集中し易いことから、表皮層３２の一部を飛散させることなく、基材２１のテア部４０の破断ライン４７と一致しつつ、迅速に破断する。勿論、接着力の高い凹部近傍領域５４は、凹部配設領域５２に隣接しているものの、その周縁には、凹部配設領域５２と同様な接着力を低くした周縁領域５６が配設されるものであり、表皮層３２における凹部配設領域５２に隣接する部位の全域を、接着力を高くするわけで無い。そのため、凹部近傍領域５４だけを、単に、他の凹部配設領域５２や周縁領域５６に比べて、表皮層３２の基材２１に対する接着力を高めるだけでよく、簡便に、表皮層３２を基材２１に接着させることが可能となる。 In the airbag cover 20 of the embodiment, when the tear portion 40 of the base material 21 is broken by being pushed by the inflating airbag 11, the recessed portion arrangement region of the skin layer 32 directly above the recessed portion 40a of the tear portion 40 At 52, since the adhesive strength to the base material 21 is lower than that of the adjacent concave portion vicinity area 54, the base material 21 stretches out of alignment with the base material 21, and the area becomes thin and thin so as to be easily broken. is a region of narrow width dimension WC in the immediate vicinity of the concave portion 40a, and stress concentration is likely to occur. break to Of course, although the recess vicinity region 54 with high adhesive strength is adjacent to the recess arrangement region 52, a peripheral edge region 56 with low adhesion similar to the recess arrangement region 52 is arranged at the periphery thereof. Therefore, it is not the case that the entire region of the skin layer 32 adjacent to the recessed region 52 has a high adhesive strength. Therefore, it is only necessary to increase the adhesive force of the skin layer 32 to the base material 21 only in the recess vicinity region 54 compared to the other recess arrangement region 52 and the peripheral region 56, and the skin layer 32 can be easily used as a base. It becomes possible to adhere to the material 21 .

したがって、実施形態のエアバッグカバー２０では、基材２１のテア部４０の破断時、表皮層３２もテア部４０に沿って安定して破断させることができる。 Therefore, in the airbag cover 20 of the embodiment, when the tear portion 40 of the base material 21 is broken, the skin layer 32 can also be stably broken along the tear portion 40 .

そして、実施形態のエアバッグカバー２０では、凹部近傍領域５４に粘着テープ５０が貼着されて、凹部近傍領域５４が、凹部配設領域５２及び周縁領域５６より、接着強度を向上させている。 In the airbag cover 20 of the embodiment, the adhesive tape 50 is attached to the recessed portion neighboring region 54 so that the recessed portion neighboring region 54 has higher adhesive strength than the recessed portion arrangement region 52 and the peripheral edge region 56 .

そのため、実施形態では、表皮層３２を基材２１に接着させる際、単に、余分に、凹部近傍領域５４に粘着テープ５０を貼着するだけでよいことから、表皮層３２を基材２１に接着させる作業を、簡便に行うことができる。 Therefore, in the embodiment, when the skin layer 32 is adhered to the base material 21, the adhesive tape 50 need only be additionally adhered to the recess vicinity region 54, so that the skin layer 32 is adhered to the base material 21. You can easily do the work to make it.

なお、粘着テープ５０を使用しない場合には、例えば、表皮層３２を基材２１に接着させる際に、凹部配設領域５２及び周縁領域５６には、接着力を高めるプライマーを塗布せずに、凹部近傍領域５４にだけ、接着力を高めるプライマーを塗布して、表皮層３２を基材２１に接着させるようにしてもよい。 If the adhesive tape 50 is not used, for example, when the skin layer 32 is adhered to the base material 21, a primer that enhances adhesion is not applied to the recessed area 52 and the peripheral edge area 56. The surface layer 32 may be adhered to the base material 21 by applying a primer that enhances adhesion only to the region 54 near the recess.

また、実施形態のエアバッグカバー２０では、表皮層３２が、表面側に配設されるファブリック３３と、ファブリック３３を接着させたシート状のクッション層３７と、を備えて構成され、ファブリック３３が、凹部配設領域５２の裏面側に、表皮層３２の破断を促進するための強度低下用加工部３４、を配設させている。 Further, in the airbag cover 20 of the embodiment, the skin layer 32 is configured to include the fabric 33 arranged on the surface side and the sheet-like cushion layer 37 to which the fabric 33 is adhered, and the fabric 33 is , and a strength-lowering processed portion 34 for promoting breakage of the skin layer 32 is disposed on the back side of the recessed portion disposed region 52 .

そのため、実施形態では、表皮層３２のファブリック３３が、円滑に破断し難い材料としていても、応力集中し易い強度低下用の加工部３４を、表皮層３２の破断の起点や破断の伝播の案内に利用できて、表皮層３２における突出用開口６０の形成が円滑に行なえる。また、織物からなるファブリック３３が、表皮層３２の表面側に配設されることから、エアバッグカバー２０の触感や意匠性を良好にすることが可能となる。 Therefore, in the embodiment, even if the fabric 33 of the skin layer 32 is made of a material that is difficult to break smoothly, the processed portion 34 for strength reduction, which is likely to concentrate stress, is used as a starting point of breakage of the skin layer 32 and a guide for propagation of breakage. , and the formation of the protruding openings 60 in the skin layer 32 can be performed smoothly. Further, since the fabric 33 made of woven fabric is disposed on the surface side of the skin layer 32, it is possible to improve the feel and design of the airbag cover 20. As shown in FIG.

なお、実施形態のエアバッグカバー２０では、基材２１に設けるテア部４０の凹部４０ａが、上方から見て、中央の一文字状の部位４１の両端からそれぞれＶ字状に拡開する両端Ｙ字状として、配設させているが、図６，７に示すエアバッグカバー２０Ａのように、テア部４０Ａの凹部４０ａを上方から見て、略Ｈ字状に配設させてもよい。このエアバッグカバー２０Ａでは、テア部４０Ａの略Ｈ字の両側の縦棒部位４５（Ｌ，Ｒ）の間における略Ｈ字の横棒部位４４の前後両側のドア部２２Ａ（Ｆ，Ｂ）が、観音扉のように開いて、突出用開口６０が形成されることとなる。 In addition, in the airbag cover 20 of the embodiment, the concave portion 40a of the tear portion 40 provided in the base material 21 is Y-shaped at both ends of the central single-character-shaped portion 41, which expands in a V-shape from both ends when viewed from above. However, as in the airbag cover 20A shown in FIGS. 6 and 7, the recess 40a of the tear portion 40A may be arranged in a substantially H shape when viewed from above. In this airbag cover 20A, the door portions 22A (F, B) on both front and rear sides of the substantially H-shaped horizontal rod portion 44 between the vertical rod portions 45 (L, R) on both sides of the substantially H-shaped tear portion 40A are , and the projection opening 60 is formed by opening like a double door.

勿論、このエアバッグカバー２０Ａでも、エアバッグカバー２０と同様に、表皮層３２が、基材２１に対して、テア部４０Ａの凹部４０ａの直上の両側における凹部近傍領域５４を、凹部４０ａの直上の凹部配設領域５２、及び、凹部近傍領域５４の周囲の周縁領域５６より、粘着テープ５０やプライマー５１等により、接着強度を向上させて、基材２１に接着されて、配設されている。さらに、このエアバッグカバー２０Ａでも、表皮層３２が、表面側に配設されるファブリック３３と、ファブリック３３を接着させたシート状のクッション層３７と、を備えて構成されるとともに、ファブリック３３が、凹部配設領域５２の裏面側に、表皮層３２の破断を促進するための強度低下用加工部３４、を配設させており、エアバッグカバー２０と同様の作用・効果を得ることができる。 Of course, in this airbag cover 20A, as in the case of the airbag cover 20, the skin layer 32 is attached to the base material 21 so that the areas 54 in the vicinity of the recesses on both sides of the tear portion 40A directly above the recess 40a are positioned directly above the recess 40a. The adhesive tape 50, the primer 51, or the like improves the adhesive strength from the recessed area 52 and the peripheral area 56 around the recessed area 54, and is adhered to the base material 21. . Furthermore, in this airbag cover 20A as well, the skin layer 32 is configured with a fabric 33 disposed on the surface side and a sheet-like cushion layer 37 to which the fabric 33 is adhered, and the fabric 33 is , and a strength-reducing processed portion 34 for promoting breakage of the skin layer 32 is disposed on the back side of the recessed portion disposed region 52, and the same functions and effects as those of the airbag cover 20 can be obtained. .

なお、図８，９に示すエアバッグカバー２０Ｂのように、テア部４０Ａの凹部４０ａが、上方から見て、略Ｈ字状に配設させており、そして、表皮層３２が、表面側に配設されるファブリック３３と、ファブリック３３を接着させたシート状のクッション層３７と、を備えて構成されて、ファブリック３３が、裏面側に、表皮層３２の破断を促進するための強度低下用加工部３４Ｂ、を配設させる場合には、強度低下用の加工部３４Ｂは、凹部４０ａの略Ｈ字の横棒部位４４に沿い、かつ、凹部４０ａの略Ｈ字の横棒部位４４における直上付近における凹部配設領域５２内を含めて、複数、並設されてもよい。 As in the airbag cover 20B shown in FIGS. 8 and 9, the recessed portion 40a of the tear portion 40A is arranged in a substantially H shape when viewed from above, and the skin layer 32 is positioned on the surface side. It is composed of a fabric 33 and a sheet-like cushion layer 37 to which the fabric 33 is adhered, and the fabric 33 is provided on the back side for strength reduction to promote breakage of the skin layer 32. When the processed portion 34B is provided, the processed portion 34B for reducing strength is along the substantially H-shaped horizontal bar portion 44 of the recess 40a and directly above the substantially H-shaped horizontal bar portion 44 of the recessed portion 40a. A plurality of them may be arranged side by side, including in the recessed area 52 in the vicinity.

このエアバッグカバー２０Ｂでは、強度低下用加工部３４Ｂの配設方向をテア部４０Ａの略Ｈ字の横棒部位４４に沿うように配置させて、表皮層３２を基材２１の表面側に接着させれば、テア部４０Ａのその横棒部位４４の直上位置（凹部４０ａの幅方向の中央）に精度よく強度低下用の加工部３４Ｂが配置されなくとも、テア部４０Ａの横棒部位４４の直上近傍（凹部４０ａの幅方向の中央近傍であって、凹部配設領域５２内）に、いずれかの強度低下用加工部３４Ｂを配置させることが可能となる。そのため、エアバッグ１１（図２参照）の膨張に伴ない、基材２１のテア部４０Ａが破断してドア部２２Ａ（Ｆ，Ｂ）が押し開かれる際、テア部４０Ａの横棒部位４４の直上近傍（凹部配設領域５２内）の表皮層３２の強度低下用加工部３４Ｂ（Ａ）が、応力集中し易くなって、容易に破断し、表皮層３２の破断を迅速かつ円滑に伝播させることができる。すなわち、表皮層３２の強度低下用加工部３４Ｂがテア部４０Ａの横棒部位４４の直上位置（凹部４０ａの幅方向の中央）に、精度よく、配置されていなくとも、エアバッグ１１の膨張時、表皮層３２が円滑に破断して、突出用開口６０を形成し、その突出用開口６０からエアバッグ１１を突出させることができることから、表皮層３２の基材２１への配置時の位置合わせを、簡便に行うことができる。 In this airbag cover 20B, the surface layer 32 is adhered to the surface side of the base material 21 by arranging the direction of arrangement of the strength-lowering processed portion 34B along the substantially H-shaped horizontal bar portion 44 of the tear portion 40A. If this is done, even if the processed portion 34B for reducing strength is not precisely arranged at the position directly above the horizontal rod portion 44 of the tear portion 40A (the center of the recess 40a in the width direction), the horizontal rod portion 44 of the tear portion 40A can be removed. It is possible to dispose any of the strength-lowering processed portions 34B in the vicinity of the immediate upper position (in the vicinity of the center in the width direction of the recess 40a and within the recess arrangement region 52). Therefore, when the tear portion 40A of the base material 21 is broken and the door portion 22A (F, B) is pushed open as the airbag 11 (see FIG. 2) is inflated, the horizontal bar portion 44 of the tear portion 40A is broken. Stress is likely to concentrate on the strength-reducing processed portion 34B (A) of the skin layer 32 in the vicinity of the immediate upper portion (inside the concave portion arrangement region 52), and the breakage of the skin layer 32 is easily propagated quickly and smoothly. be able to. That is, even if the strength-lowering processed portion 34B of the skin layer 32 is not precisely positioned directly above the horizontal bar portion 44 of the tear portion 40A (the center of the recess 40a in the width direction), the airbag 11 is inflated. , the skin layer 32 is smoothly broken to form the projection opening 60, and the airbag 11 can be projected from the projection opening 60. can be easily performed.

なお、このエアバッグカバー２０Ｂにおいて、テア部４０Ａの縦棒部位４５（Ｌ，Ｒ）では、複数の強度低下用加工部３４Ｂと直交する状態となるが、テア部４０Ａの縦棒部位４５（Ｌ，Ｒ）の両側に隣接する領域は、表皮層３２を基材２１に対して接着強度を高めて接着させる凹部近傍領域５４としており、表皮層３２におけるテア部４０Ａの縦棒部位４５の凹部配設領域５２では、テア部４０Ａの縦棒部位４５の破断に追従し、並設されている強度低下用加工部３４Ｂを横断しつつ、表皮層３２が破断されることとなることから、表皮層３２の飛散を防止しつつ、突出用開口６０を円滑に形成することができる。 In this airbag cover 20B, the vertical rod portions 45 (L, R) of the tear portion 40A are perpendicular to the plurality of strength reduction processing portions 34B. , R) are formed as recessed vicinity regions 54 for bonding the skin layer 32 to the base material 21 with increased adhesive strength. In the installation region 52, the skin layer 32 is broken while following the breakage of the vertical rod portion 45 of the tear portion 40A and traversing the parallel strength reduction processed portions 34B. 32 can be prevented from scattering, and the projecting opening 60 can be formed smoothly.

さらに、上方から見て略Ｈ字状に凹部４０ａを設けたテア部４０Ａを基材２１に配設しつつ、ファブリック３３の裏面側に強度低下用加工部を並設させる場合、図１０に示すエアバッグカバー２０Ｃのように、強度低下用の加工部３５，３６を格子状に配設してもよい。 Furthermore, when the tear portion 40A provided with the concave portion 40a in a substantially H shape when viewed from above is arranged on the base material 21, and the processed portion for reducing the strength is arranged side by side on the back side of the fabric 33, as shown in FIG. As in the airbag cover 20C, the processed portions 35 and 36 for reducing strength may be arranged in a grid pattern.

すなわち、このエアバッグカバー２０Ｃでは、ファブリック３３の裏面側の強度低下用加工部が、凹部４０ａの略Ｈ字の横棒部位４４における直上付近と、凹部４０ａの略Ｈ字の縦棒部位４５（Ｌ，Ｒ）における直上付近と、の凹部配設領域５２内を含めて、凹部４０ａの略Ｈ字の横棒部位４４に沿う横方向加工部３５と、凹部４０ａの略Ｈ字の縦棒部位４５（Ｌ，Ｒ）に沿う縦方向加工部３６と、を、それぞれ、複数並設させて、格子状に配設されている。 That is, in the airbag cover 20C, the strength-reducing processed portion on the back side of the fabric 33 is formed in the vicinity directly above the substantially H-shaped horizontal rod portion 44 of the recess 40a and the substantially H-shaped vertical rod portion 45 of the recessed portion 40a ( L, R), including the recess arrangement area 52, the laterally processed portion 35 along the substantially H-shaped horizontal bar portion 44 of the recessed portion 40a, and the substantially H-shaped vertical bar portion of the recessed portion 40a. A plurality of longitudinally processed portions 36 along 45(L, R) are arranged side by side in a grid pattern.

このようなエアバッグカバー２０Ｃでは、テア部４０Ａの略Ｈ字の横棒部位４４に沿うような強度低下用加工部（横方向加工部）３５の他に、テア部４０Ａの略Ｈ字の縦棒部位４５（Ｌ，Ｒ）に沿う強度低下用加工部（縦方向加工部）３６も並設されていることから、基材２１のテア部４０Ａの破断により、略Ｈ字の横棒部位４４の両側のドア部２２ＡＦ，２２ＡＢが開く構成であっても、テア部４０Ａの横棒部位４４と縦棒部位４５（Ｌ，Ｒ）とに対応する凹部配設領域５２内において、表皮層３２におけるドア部２２Ａ（Ｆ，Ｂ）の先端の部位に略平行な横方向加工部３５と、ドア部２２Ａ（Ｆ，Ｂ）の両縁側の部位と略平行となる部位の縦方向加工部３６も、共に、円滑に破断することが可能となって、一層、基材２１と表皮層３２とが円滑に破断ラインを一致させて破断して、ドア部２２Ａ（Ｆ，Ｂ）を開かせて形成する突出用開口６０の開口形状を安定させることができ、エアバッグ１１の突出形態を安定させることができる。 In such an airbag cover 20C, in addition to the strength reduction processed portion (horizontal direction processed portion) 35 along the substantially H-shaped horizontal bar portion 44 of the tear portion 40A, the substantially H-shaped longitudinal portion of the tear portion 40A is formed. Since the strength-lowering processed portions (vertical direction processed portions) 36 are also arranged along the rod portions 45 (L, R), the breakage of the tear portion 40A of the base material 21 results in an approximately H-shaped horizontal rod portion 44. Even in the configuration in which the door portions 22AF and 22AB on both sides of the door portions 22AF and 22AB are opened, the surface layer 32 is A laterally processed portion 35 substantially parallel to the tip portion of the door portion 22A (F, B), and a vertically processed portion 36 substantially parallel to the portions on both edge sides of the door portion 22A (F, B), Both of them can be broken smoothly, and the base material 21 and the skin layer 32 are further smoothly broken by aligning the breaking lines, and the door part 22A (F, B) is opened and formed. The opening shape of the protrusion opening 60 can be stabilized, and the protrusion form of the airbag 11 can be stabilized.

なお、エアバッグカバー２０Ｂ，２０Ｃにおいて、複数の強度低下用加工部３４Ｂ，３５，３６を並設させる場合、いずれかの加工部３４Ｂ，３５，３６が、確実に、凹部配設領域５２内に配設されるように、複数の加工部３４Ｂ，３５，３６の相互のピッチＶＰ（図８参照）は、凹部配設領域５２の幅寸法ＷＣ（図８参照）より小さいことが望ましい（ＶＰ＜ＷＣ）。 In the airbag covers 20B and 20C, when a plurality of strength-lowering processed portions 34B, 35, and 36 are arranged side by side, one of the processed portions 34B, 35, and 36 is surely positioned within the concave portion arrangement region 52. It is desirable that the mutual pitch VP (see FIG. 8) of the plurality of processed portions 34B, 35, and 36 be smaller than the width dimension WC (see FIG. 8) of the recessed area 52 (VP< WC).

さらに、強度低下用の加工部３４Ｂ，３５，３６を並設させる個数は、いずれかの加工部３４Ｂ，３５，３６が、凹部配設領域５２に配置されればよいことから、複数の２～３個、あるいは、凹部配設領域５２を超えて配置させて、２～１０個程度の複数個としてもよい。さらに、それらの配置する長さ方向の領域も、テア部４０Ａのエリアを含む長さ寸法の領域だけに、強度低下用加工部３４Ｂ，３５，３６を並設させてもよい。 Furthermore, since any one of the processed portions 34B, 35, and 36 may be arranged in the concave portion arrangement region 52, the number of the processed portions 34B, 35, and 36 for reducing strength to be arranged side by side is two to two. There may be three, or a plurality of about 2 to 10 may be arranged beyond the recessed area 52 . Further, the strength-lowering processed portions 34B, 35, and 36 may be arranged side by side only in the lengthwise regions in which they are arranged, including the area of the tear portion 40A.

勿論、エアバッグ１１の膨張時に、ファブリック３３が飛散すること無く円滑に破断されれば、ファブリック３３の裏面側に設ける強度低下用の加工部３４は、図１１に示すエアバッグカバー２０Ｄのように、その幅寸法ＷＭを、凹部４０ａの幅寸法ＷＴより大きくしてもよい。 Of course, if the fabric 33 is smoothly broken without being scattered when the airbag 11 is inflated, the processed portion 34 for reducing the strength provided on the back side of the fabric 33 may be the airbag cover 20D shown in FIG. , the width dimension WM thereof may be larger than the width dimension WT of the recess 40a.

この場合、例えば、テア部４０の凹部４０ａは、幅寸法ＷＴを０．５～３ｍｍ程度の範囲内の約１ｍｍとし、強度低下用加工部３４の幅寸法ＷＭは、凹部４０ａの幅寸法ＷＴより大きくして、１～５ｍｍ程度の範囲内の約２ｍｍとしてもよい。 In this case, for example, the recess 40a of the tear portion 40 has a width dimension WT of about 1 mm within a range of about 0.5 to 3 mm, and the width dimension WM of the strength-lowering processed portion 34 is set to be greater than the width dimension WT of the recess 40a. It may be increased to about 2 mm within a range of about 1 to 5 mm.

また、実施形態の場合、表皮層３２の表面側の表皮本体として、織物や編物等からなるファブリック３３を例示したが、表皮本体としては、他の皮革や不織布等から構成してもよい。 In the embodiment, the fabric 33 made of woven fabric, knitted fabric, or the like is exemplified as the skin main body on the surface side of the skin layer 32, but the skin main body may be made of other leather, non-woven fabric, or the like.

さらに、実施形態では、表皮層３２として、ファブリック３３とクッション層３７とを備えて構成されているものを例示したが、ファブリック３３や皮革等の表皮本体の一層から、表皮層３２を構成してもよい。 Furthermore, in the embodiment, the skin layer 32 is configured by including the fabric 33 and the cushion layer 37, but the skin layer 32 is composed of one layer of the skin main body such as the fabric 33 and leather. good too.

さらにまた、クッション層３７も、ポリプロピレン等のフォーム材の他、ウレタン等の合成樹脂材、あるいは、不織布等の布材から構成してもよい。 Furthermore, the cushion layer 37 may be made of a foam material such as polypropylene, a synthetic resin material such as urethane, or a cloth material such as non-woven fabric.

また、実施形態の場合、テア部４０，４０Ａの凹部４０ａが、クッション層３７にも到達している状態で図示したが、クッション層３７に到達せずに、基材２１だけに、凹部４０ａが形成される構成のテア部４０，４０Ａとしてもよい。 Further, in the case of the embodiment, the recess 40a of the tear portions 40 and 40A is illustrated as reaching the cushion layer 37. The tear portions 40 and 40A may be configured to be formed.

なお、表皮層３２のファブリック３３が円滑に破断できるように、ファブリック３３の裏面側に、凹溝や凹部、あるいは、切断部や切除部、あるいは、断面減少部等を設けて形成する強度低下用加工部３４を配設するエアバッグカバーでは、感触や意匠を好適にした状態で、円滑に、テア部４０，４０Ａに対応させてファブリック３３を破断させることが可能となることから、基材２１と表皮層３２との接着態様として、凹部配設領域５２や凹部近傍領域５４等の接着強度の差を設けずに、単に、基材２１に表皮層３２を接着させて構成するエアバッグカバーとして、ファブリック３３の裏面側に、強度低下用の加工部３４，３４Ｂ，３５，３６を設けてもよい。 In addition, so that the fabric 33 of the skin layer 32 can be broken smoothly, the back side of the fabric 33 is provided with a groove, a recess, a cut portion, an excision portion, or a cross-sectional reduction portion. In the airbag cover in which the processed portion 34 is arranged, the fabric 33 can be smoothly broken corresponding to the tear portions 40 and 40A while maintaining a suitable feel and design. and the skin layer 32, the skin layer 32 is simply bonded to the base material 21 without providing a difference in bonding strength between the recessed area 52 and the recessed area neighboring area 54. , processing portions 34 , 34 B, 35 , 36 for reducing strength may be provided on the back side of the fabric 33 .

１１…エアバッグ、２０，２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ…エアバッグカバー、２１…基材、２２，２２Ａ（Ｆ，Ｂ）…中央ドア部、２３（Ｌ，Ｒ）…三角ドア部、３２…表皮層、３３…（表皮）ファブリック、３４，３４Ｂ…強度低下用加工部、３５…横方向加工部、３６…縦方向加工部、３７…クッション層、４０，４０Ａ…テア部、４０ａ…（Ｖ溝）凹部、４１…直線状部位・一文字状部位、４２（Ｌ，Ｒ）…Ｖ字状部位、４４…横棒部位、４５（Ｌ，Ｒ）…縦棒部位、５０…粘着テープ、５２…凹部配設領域、５４…凹部近傍領域、５６…周縁領域、６０…突出用開口。 DESCRIPTION OF SYMBOLS 11... Airbag 20, 20A, 20B, 20C, 20D... Airbag cover 21... Base material 22, 22A (F, B)... Center door part 23 (L, R)... Triangular door part 32... Skin layer 33 (skin) fabric 34, 34B strength reduction processing portion 35 horizontal direction processing portion 36 vertical direction processing portion 37 cushion layer 40, 40A tear portion 40a (V Groove) Concave portion 41 Linear portion/line-shaped portion 42 (L, R) V-shaped portion 44 Horizontal bar portion 45 (L, R) Vertical bar portion 50 Adhesive tape 52 Recess arrangement area 54 Recess vicinity area 56 Peripheral edge area 60 Protrusion opening.

Claims (6)

基材と、該基材の表面側に接着された表皮層と、を有する構成として、折り畳まれたエアバッグを覆い、かつ、膨張する前記エアバッグにより、前記基材の裏面側から表面側に凹む凹部を配設させて構成されるテア部、を破断させて突出用開口を形成して、該突出用開口から前記エアバッグを突出させる構成のエアバッグカバーであって、
前記表皮層が、前記基材に対して、前記テア部の前記凹部の直上の両側における凹部近傍領域を、前記凹部の直上の凹部配設領域、及び、前記凹部近傍領域の周囲の周縁領域より、前記凹部近傍領域に粘着テープが貼着されることによって接着強度を向上させて、前記基材に接着されて配設されていることを特徴とするエアバッグカバー。 As a structure having a base material and a skin layer adhered to the surface side of the base material, a folded airbag is covered and expanded from the back surface side to the front surface side of the base material by the inflated airbag. An airbag cover having a structure in which a projection opening is formed by breaking a tear portion configured by arranging a concave recess, and the airbag projects from the projection opening,
The skin layer is arranged such that the recessed portion adjacent regions on both sides of the tear portion immediately above the recessed portion are more likely to be removed from the base material than the recessed portion disposing region directly above the recessed portion and the peripheral edge region around the recessed portion adjacent region. 1. An airbag cover, wherein the airbag cover is adhered to the base material to improve adhesive strength by attaching an adhesive tape to the area near the recess . 前記凹部が、上方から見て、中央の一文字状の部位の両端からそれぞれＶ字状に拡開する両端Ｙ字状として、配設されていることを特徴とする請求項１に記載のエアバッグカバー。 2. The airbag according to claim 1 , wherein said concave portion is arranged in a Y-shape that expands in a V-shape from both ends of a central line-shaped portion when viewed from above. cover. 前記凹部が、上方から見て、略Ｈ字状に配設されていることを特徴とする請求項１に記載のエアバッグカバー。 2. The airbag cover according to claim 1 , wherein the recess is arranged in a substantially H shape when viewed from above. 前記表皮層が、表面側に配設されるファブリックと、該ファブリックを接着させたシート状のクッション層と、を備えて構成され、
前記ファブリックが、前記凹部配設領域の裏面側に、前記表皮層の破断を促進するための強度低下用加工部、を配設させていることを特徴とする請求項１乃至３のいずれか１項に記載のエアバッグカバー。 The skin layer comprises a fabric arranged on the surface side and a sheet-like cushion layer to which the fabric is adhered,
4. The fabric according to any one of claims 1 to 3 , wherein a strength-reducing processed portion for promoting breakage of the skin layer is disposed on the back surface side of the recessed region. Airbag cover as described above. 前記表皮層が、表面側に配設されるファブリックと、該ファブリックを接着させたシート状のクッション層と、を備えて構成され、
前記ファブリックが、裏面側に、前記表皮層の破断を促進するための強度低下用加工部、を配設させ、
前記強度低下用加工部が、前記凹部の略Ｈ字の横棒部位に沿い、かつ、前記凹部の略Ｈ字の横棒部位における直上付近における前記凹部配設領域内を含めて、複数、並設されていることを特徴とする請求項３に記載のエアバッグカバー。 The skin layer comprises a fabric arranged on the surface side and a sheet-like cushion layer to which the fabric is adhered,
The fabric has, on the back side, a processed portion for reducing strength for promoting breakage of the skin layer,
A plurality of the strength-lowering processed portions are arranged in parallel along the substantially H-shaped lateral bar portion of the recessed portion and in the vicinity of the substantially H-shaped lateral bar portion of the recessed portion, including within the recessed portion arrangement region. 4. The airbag cover according to claim 3 , wherein the airbag cover is provided with a 前記強度低下用加工部が、
前記凹部の略Ｈ字の横棒部位における直上付近と前記凹部の略Ｈ字の縦棒部位における直上付近とにおける前記凹部配設領域内を含めて、
前記凹部の略Ｈ字の横棒部位に沿う横方向加工部と、前記凹部の略Ｈ字の縦棒部位に沿う縦方向加工部と、それぞれ、複数並設させて、
格子状に配設されていることを特徴とする請求項５に記載のエアバッグカバー。 The processed portion for reducing strength is
Including the recess arrangement area in the vicinity directly above the approximately H-shaped horizontal bar portion of the recess and the vicinity immediately above the approximately H-shaped vertical bar portion of the recess,
A plurality of horizontally processed portions along the substantially H-shaped horizontal bar portion of the recess and a plurality of vertically processed portions along the substantially H-shaped vertical bar portion of the recess are arranged side by side,
6. The airbag cover according to claim 5 , wherein the airbag cover is arranged in a grid.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005104307A (en) 2003-09-30 2005-04-21 Nippon Plast Co Ltd Air bag cover
JP2010509115A (en) 2006-11-07 2010-03-25 オートリブ エーエスピー，インコーポレイティド Airbag cover seam
JP2018024380A (en) 2016-08-12 2018-02-15 カルソニックカンセイ株式会社 Airbag lid manufacturing method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0976863A (en) * 1995-09-11 1997-03-25 Toyoda Gosei Co Ltd Pad for leather covering air bag device
JP3011888B2 (en) * 1996-07-19 2000-02-21 株式会社イノアックコーポレーション Instrument panel airbag door structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005104307A (en) 2003-09-30 2005-04-21 Nippon Plast Co Ltd Air bag cover
JP2010509115A (en) 2006-11-07 2010-03-25 オートリブ エーエスピー，インコーポレイティド Airbag cover seam
JP2018024380A (en) 2016-08-12 2018-02-15 カルソニックカンセイ株式会社 Airbag lid manufacturing method

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