JPH1177713A - Method for forming cleavage-programmed part for air bag door - Google Patents
Method for forming cleavage-programmed part for air bag doorInfo
- Publication number
- JPH1177713A JPH1177713A JP9254138A JP25413897A JPH1177713A JP H1177713 A JPH1177713 A JP H1177713A JP 9254138 A JP9254138 A JP 9254138A JP 25413897 A JP25413897 A JP 25413897A JP H1177713 A JPH1177713 A JP H1177713A
- Authority
- JP
- Japan
- Prior art keywords
- skin
- processing blade
- jig
- cleaved
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Air Bags (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、エアバッグドア
用開裂予定部の形成方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an opening portion for an airbag door.
【０００２】[0002]
【従来の技術】近年、自動車には、乗員を衝突時の衝撃
から安全に保護するため、エアバッグ装置が設けられる
ようになった。図８および９に示すように、このエアバ
ッグ装置５０は、たとえば、助手席側にあっては、イン
ストルメントパネル等の車室側部材６０の内部に設けら
れている。2. Description of the Related Art In recent years, an automobile has been provided with an airbag device in order to safely protect an occupant from an impact at the time of a collision. As shown in FIGS. 8 and 9, the airbag device 50 is provided inside a passenger compartment side member 60 such as an instrument panel on the passenger seat side, for example.
【０００３】そして、自動車が衝突などにより大きな衝
撃を受けた時には、エアバッグ装置５０のインフレータ
ーＩが作動し、エアバッグドア収容ケース５１内に収容
されているエアバッグＡが膨張し、エアバッグドア６１
を裏側から押し開いて車室内に展開する。When the automobile receives a large impact due to a collision or the like, the inflator I of the airbag device 50 operates, the airbag A housed in the airbag door housing case 51 inflates, and the airbag door is inflated. 61
And open it from behind to deploy it in the cabin.
【０００４】前記エアバッグドア６１は、平時、エアバ
ッグ収容ケース５１に蓋をして車室内の美観を向上さ
せ、また衝突時にエアバッグ収容ケース５１を開いてエ
アバッグＡが車室内に展開できるようにするものであ
る。このエアバッグドア６１には、この例のように、車
室側部材６０に一体形成される一体タイプと、車室側部
材とは別個に形成されて車室側部材に後付けさる後付け
タイプとがある。特に一体タイプは、組み付け作業が不
要になるという利点のみならず、エアバッグドア６１の
外周に隙間を生じずエアバッグドア６１とその周囲の内
装材との一体感に優れ、内装材の外観が良好となるとい
う利点がある。この発明は一体タイプに関するものであ
る。The airbag door 61 covers the airbag accommodating case 51 during normal times to improve the aesthetics of the vehicle interior, and also allows the airbag A to be deployed in the vehicle interior by opening the airbag accommodating case 51 in the event of a collision. Is to do so. As shown in this example, the airbag door 61 has an integral type integrally formed with the vehicle interior side member 60 and a post-installation type formed separately from the vehicle interior side member and retrofitted to the vehicle interior side member. is there. In particular, the one-piece type has not only the advantage that the assembling work is not required, but also provides a sense of unity between the airbag door 61 and the surrounding interior material without forming a gap on the outer periphery of the airbag door 61, and the appearance of the interior material is improved. There is an advantage that it becomes better. The present invention relates to an integrated type.
【０００５】前記一体タイプにあっては、車室側部材６
０のプラスチック製表皮６２にエアバッグドア６１部分
を画定する開裂予定部６４が形成され、エアバッグドア
６１裏側がエアバッグＡの膨張により押された際に、前
記開裂予定部６４で車室側部材６０が点線６５の位置で
破断し、エアバッグドア６１が開くようになっている。
図中の符号６３は車室側部材６０の表皮６２裏面に形成
された合成樹脂発泡層であり、また６６は車室側部材６
０の基材、６７はエアバッグドア裏打ち基材である。[0005] In the case of the integral type, the vehicle side member 6
0 is formed on the plastic skin 62 to define the portion of the airbag door 61, and when the back side of the airbag door 61 is pushed by the inflation of the airbag A, the portion to be cleaved 64 The member 60 is broken at the position of the dotted line 65, and the airbag door 61 is opened.
Reference numeral 63 in the figure denotes a synthetic resin foam layer formed on the back surface of the skin 62 of the vehicle interior member 60, and 66 denotes a vehicle interior member 6
The substrate No. 0, 67 is an airbag door backing substrate.
【０００６】前記表皮６２の開裂予定部６４は、前記エ
アバッグＡの押圧によって破断するように、溝やスリッ
ト等で周囲より脆弱にされている。この開裂予定部６４
の形成は、公知のパウダースラッシュ成形や真空成形等
により車室側部材形状に成形したプラスチック製表皮
を、図１０に示すような受け治具７０の受け面７１に表
皮裏面を上向きにして配置し、前記表皮に設定された開
裂予定部形成位置を加工刃で押圧して溝やスリットを形
成することにより行われる。The portion 64 to be cleaved of the outer skin 62 is made weaker than its surroundings by a groove, a slit, or the like so as to be broken by the pressure of the airbag A. This part to be cleaved 64
Is formed by placing a plastic skin molded into a vehicle interior member shape by known powder slush molding or vacuum molding on a receiving surface 71 of a receiving jig 70 as shown in FIG. The groove is formed by pressing the predetermined cleavage formation position set on the skin with a processing blade to form a groove or a slit.
【０００７】前記加工刃による押圧時、受け治具７０上
の表皮は、開裂予定部形成位置に弛みや皺を有すると、
加工刃によって正しく押圧されず、開裂予定部が正確に
形成されなくなる。そのため、従来では、表皮が配置さ
れる受け治具７０の受け面７１を表皮の形状、すなわち
車室側部材の表面形状に合わせた曲面とするとともに、
加工刃の刃先を受け面７１の形状（開裂予定部形成位置
の表皮形状）に合わせた３次元形状として、表皮の開裂
予定部形成位置を正しく支持しながら、加工刃で正確に
押圧するようにしている。特にインストルメントパネル
は、車幅方向よりも車両の前後方向に沿って大きく湾曲
した形状とされるため、開裂予定部６４のなかでも車両
の前後方向に沿う部分６４ａの形成に際して、前記加工
刃の刃先を三次元形状とする必要があった。When the skin on the receiving jig 70 has looseness or wrinkles at the position for forming the portion to be cleaved when pressed by the processing blade,
It is not pressed correctly by the processing blade, and the part to be cleaved cannot be formed accurately. For this reason, conventionally, the receiving surface 71 of the receiving jig 70 on which the skin is disposed has a curved surface that matches the shape of the skin, that is, the surface shape of the vehicle interior member,
The cutting edge of the processing blade is formed into a three-dimensional shape that matches the shape of the receiving surface 71 (skin shape at the position at which the planned tear is formed) so that the cutting blade can be accurately pressed by the processing blade while properly supporting the position at which the planned skin is to be cleaved. ing. In particular, the instrument panel has a shape that is greatly curved along the front-rear direction of the vehicle rather than the vehicle width direction. It was necessary to make the cutting edge three-dimensional.
【０００８】ところが、このような開裂予定部の形成方
法によると、加工刃の刃先の製作が面倒で、加工刃の製
作コストが嵩み、その結果車室側部材のコストが上昇す
る問題がある。しかも加工刃は、使用回数を重ねるにし
たがい刃先の鋭利さが鈍るため交換あるいは研磨等する
必要があり、一層コストが嵩むことになる。しかも、特
定の表皮に合わせて刃先を３次元形状とした加工刃は、
その加工刃に合致する表皮にしか対応できず、他の形状
からなる表皮に対して使用できない問題もあった。However, according to such a method of forming the portion to be cleaved, the production of the cutting edge of the processing blade is troublesome, and the production cost of the processing blade is increased. As a result, the cost of the vehicle interior member is increased. . In addition, the sharpness of the cutting edge becomes dull as the number of use of the processing blade increases, so that it is necessary to replace or grind the processing blade, and the cost is further increased. In addition, the processing blade with a three-dimensional cutting edge according to the specific skin,
There is also a problem that it can be used only for a skin that matches the processing blade and cannot be used for a skin having another shape.
【０００９】また、前記開裂予定部は、１ｍｍ厚程度の
表皮に対し約０．５ないし０．７ｍｍの深さの溝あるい
はスリット状とされるため、該開裂予定部の形成は慎重
に行わなければならなかった。しかし、前記受け治具を
用いる場合においても、加工刃で表皮の開裂予定部形成
位置を押圧する際に表皮がずれ易く、開裂予定部が正し
く形成されないことがしばしばあった。Further, since the to-be-cleaved portion is formed into a groove or a slit having a depth of about 0.5 to 0.7 mm with respect to the skin having a thickness of about 1 mm, the formation of the to-be-cleaved portion must be performed carefully. I had to. However, even when the receiving jig is used, the skin tends to shift when the processing blade presses the position at which the planned skin is to be cleaved, and the planned cleaving portion is often not formed correctly.
【００１０】[0010]
【発明が解決しようとする課題】そこでこの発明は、前
記の問題点に鑑みなされたもので、エアバッグドア用開
裂予定部の形成に際し、単純形状からなる刃先を有する
加工刃を用いることができ、しかも形状が異なる表皮に
対しても同一の加工刃で対応でき、さらに正確かつ安価
にエアバッグドア用開裂予定部を形成できる方法を提供
する。SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems, and it is possible to use a processing blade having a simple-shaped cutting edge in forming an airbag door tearing scheduled portion. In addition, the present invention provides a method capable of forming an intended airbag door tearable portion with the same machining blade for different shapes of skin with the same processing blade.
【００１１】[0011]
【課題を解決するための手段】すなわち、この発明は、
エアバッグドアを有する車室側部材のための表皮を受け
治具にセットし、前記エアバッグドアに対する表皮の開
裂予定部形成位置を加工刃で押圧して、エアバッグ膨張
時に開裂する溝状またはスリット状の開裂予定部を前記
表皮に形成する方法であって、前記表皮の開裂予定部形
成位置を前記受け治具に形成された平面部で支持しなが
ら加工刃で押圧することを特徴とするThat is, the present invention provides:
A skin for an interior member having an airbag door is set in a receiving jig, and a position at which a scheduled portion of the skin is to be cleaved with respect to the airbag door is pressed by a processing blade to form a groove or a groove that is cleaved when the airbag is inflated. A method for forming a slit-shaped scheduled tearing portion on the skin, wherein the cutting edge of the skin is supported by a flat portion formed on the receiving jig and pressed by a processing blade.
【００１２】また、前記加工刃による押圧時に、表皮を
受け治具に吸着保持させたり、加工刃の両側に設けた弾
性体で表皮の開裂予定部形成位置の両側を受け治具に押
圧固定してもよい。Also, when pressed by the processing blade, the skin is sucked and held by a jig, or elastic members provided on both sides of the processing blade are pressed and fixed to the jig by receiving both sides of a position where the skin is to be cleaved. You may.
【００１３】[0013]
【発明の実施の形態】以下添付の図面に従ってこの発明
を詳細に説明する。図１はこの発明の一実施例における
受け治具の断面図、図２は同実施例における表皮をセッ
トした状態を示す断面図、図３は同実施例に用いる受け
治具製作型の斜視図、図４は図３の４−４断面図、図５
は同実施例における分割型分離時の断面図、図６は他の
実施例における受け治具および加工刃の部分断面図、図
７は図６における加工刃による押圧時を示す部分断面図
である。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a receiving jig in one embodiment of the present invention, FIG. 2 is a cross-sectional view showing a state in which a skin is set in the embodiment, and FIG. 3 is a perspective view of a receiving jig manufacturing type used in the embodiment. FIG. 4 is a sectional view taken along line 4-4 of FIG.
FIG. 6 is a cross-sectional view of the same embodiment at the time of split mold separation, FIG. 6 is a partial cross-sectional view of a receiving jig and a processing blade of another embodiment, and FIG. .
【００１４】この発明は、インストルメントパネル等の
車室側部材のための表皮に、図８および図９に示したよ
うな、エアバッグドア用開裂予定部６４を形成する方法
に関し、図１および図２に示すような受け治具１０によ
って表皮２０を支持しながら、加工刃３０で前記開裂予
定部６４を形成するものである。なお、この例では、エ
アバッグドアがフロントウィンド側と座席側の両方へ開
く両開きタイプ用の開裂予定部６４を形成するもので、
図８に示すように略Ｈ字形をしている。もちろん、前記
開裂予定部は片開きエアバッグドアに合わせて略Ｕ字形
のものでもよい。The present invention relates to a method for forming an airbag door cleavable portion 64 as shown in FIGS. 8 and 9 on a skin for a cabin-side member such as an instrument panel. While the outer skin 20 is supported by the receiving jig 10 as shown in FIG. 2, the to-be-cleaved portion 64 is formed by the processing blade 30. Note that, in this example, the airbag door forms a split opening portion 64 for a double-opening type that opens to both the front window side and the seat side.
As shown in FIG. 8, it is substantially H-shaped. Of course, the part to be cleaved may be substantially U-shaped in accordance with the one-sided airbag door.
【００１５】開裂予定部が形成される表皮２０は、公知
のパウダースラッシュ成形あるいは真空成形等によっ
て、所定の車室側部材形状に成形されたプラスチック製
からなり、この実施例ではインストルメントパネル形状
に成形されている。また、この表皮２０は、エアバッグ
ドア用の開裂予定部６４が形成された後、図８に示した
ような車室側部材６０の基材６６とエアバッグドア裏打
ち基材６７とともに、図示しない発泡成形型に配置さ
れ、図９の合成樹脂発泡層６３が形成されて所望の車室
側部材６０とされる。この表皮２０には、前記エアバッ
グドア用開裂予定部６４に合わせてあらかじめ開裂予定
部形成位置２２が定められている。前記開裂予定部形成
位置２２の表皮部分は、車両の前後方向に沿って所要の
曲面形状となっており、また車両の幅方向に沿ってほぼ
直線状となっている。The skin 20 on which the portion to be cleaved is formed is made of plastic molded into a predetermined vehicle interior member shape by a known powder slush molding or vacuum molding. In this embodiment, the skin 20 is formed into an instrument panel. Is molded. Further, the skin 20 is not shown together with the base material 66 of the cabin-side member 60 and the base material 67 for lining the airbag door as shown in FIG. The synthetic resin foam layer 63 shown in FIG. 9 is formed in a foaming mold to form a desired vehicle interior side member 60. In the outer skin 20, an expected tearing portion forming position 22 is previously determined in accordance with the airbag door tearing expected portion 64. The skin portion at the predetermined cleavage portion forming position 22 has a required curved surface shape in the front-rear direction of the vehicle, and has a substantially straight shape along the width direction of the vehicle.
【００１６】また、この実施例の表皮２２は、製品部の
外周にその後切除されるスカート部２１を有し、そのス
カート部２１に受け治具１０への表皮位置決め用ダボ２
１ａが、後記する受け治具１０周縁の突起１９に対応し
て形成されている。このダボ２１ａは、表皮２０を受け
治具１０にセットする際に受け治具１０の突起１９には
められる。なお、前記スカート部２１は、表皮２０を成
形する際に表皮２０の把持部等として用いられ、またこ
の表皮２０を用いて車室側部材を成形する際の合成樹脂
発泡層形成時に発泡成形型とのシール部として用いられ
る部分で、最終的には切除される。Further, the skin 22 of this embodiment has a skirt portion 21 which is cut off thereafter on the outer periphery of the product portion, and the skirt portion 21 has a dowel 2 for positioning the skin on the receiving jig 10.
1a is formed corresponding to a projection 19 on the periphery of the receiving jig 10 described later. The dowels 21 a are fitted to the projections 19 of the receiving jig 10 when setting the outer skin 20 on the receiving jig 10. The skirt portion 21 is used as a grip portion or the like of the skin 20 when the skin 20 is formed, and is used as a foaming mold when forming a synthetic resin foam layer when the vehicle interior member is formed using the skin 20. And is finally cut off.
【００１７】受け治具１０は、前記表皮２０に開裂予定
部を形成する際に表皮２０を支持するためのもので、ほ
ぼ表皮形状に窪んだ表皮受け面１１を有する。表皮受け
面１１は、表皮２０の開裂予定部形成位置２２を支持す
る平面部１２とその他の一般部２３を支持する一般部受
け面１３とよりなる。The receiving jig 10 is for supporting the skin 20 when forming a portion to be cleaved on the skin 20, and has a skin receiving surface 11 which is substantially concave in a skin shape. The skin receiving surface 11 is composed of a flat portion 12 that supports a position 22 at which the skin 20 is to be cleaved and a general portion receiving surface 13 that supports other general portions 23.
【００１８】平面部１２は、前記開裂予定部形成位置２
２の表皮曲面形状を平面形状にして支持するための部分
で、当該表皮２０の開裂予定部形成位置２２を弛みや皺
を生じることなく平面形状に支持できる大きさからな
る。この例の平面部１２は長方形からなり、前記表皮２
０の開裂予定部形成位置２２における車両前後方向と対
応する平面部１２の長さａが、受け治具１０へのセット
前の表皮２０における、開裂予定部形成位置２２の車両
前後方向に沿う表皮表面の長さ、すなわち図８に示す車
室側部材６０の開裂予定部６４における車両前後方向の
長さｂと等しくされる。The flat portion 12 is located at the position 2 where the to-be-cleaved portion is to be formed.
2 is a portion for supporting the curved surface shape of the skin in a planar shape, and has a size capable of supporting the planned cleavage portion forming position 22 of the skin 20 in a planar shape without generating looseness or wrinkles. The plane portion 12 in this example is formed of a rectangle,
The length a of the flat portion 12 corresponding to the vehicle front-rear direction at the scheduled tearing portion forming position 22 is 0, and the skin 20 along the vehicle longitudinal direction at the scheduled tearing portion forming position 22 in the skin 20 before being set on the receiving jig 10. The length is equal to the length b of the front surface, that is, the length b in the vehicle front-rear direction of the to-be-cleaved portion 64 of the vehicle interior side member 60 shown in FIG.
【００１９】また、一般部受け面１３は、表皮一般部２
３の形状にほぼ合わせた曲面形状とされている。この曲
面形状の一般部受け面１３と前記大きさの平面部１２と
で表皮受け面１１を構成したことにより、表皮２０の開
裂予定部形成位置２２を弛みや皺の発生なく、受け治具
１０に配置支持できる。The general portion receiving surface 13 is provided with the general skin portion 2.
3 has a curved surface shape substantially matching the shape. By forming the skin receiving surface 11 with the curved general portion receiving surface 13 and the flat portion 12 having the above-described size, the expected tearing portion forming position 22 of the skin 20 is not loosened or wrinkled without causing the receiving jig 10. Can be arranged and supported.
【００２０】前記受け治具１０の製作は、次のようにし
て行うのが簡単である。まず、図３に示すように、表皮
形状に沿う表皮受け面１１を有する受け治具製作型１０
ａを公知の方法で製造する。次いで、前記受け治具製作
型１０ａを、表皮２０の開裂予定部形成位置２２の部分
が配置される表皮受け面１１部分を通るようにして、表
皮２０の車両前後方向と対応する方向に二分割する。符
号Ｍ１，Ｍ２は分割された分割型である。そして、図４
に示すように、表皮２０の開裂予定部形成位置部分２２
の車両前後方向両端と対応する表皮受け面１１の所定位
置Ｘ，Ｙ間の表皮受け面１１に沿う距離Ｌ１が、図５に
示すように表皮受け面１１の同位置間の直線距離と等し
くなるように、分割型Ｍ１，Ｍ２を離し、分割型Ｍ１，
Ｍ２間に隙間Ｓを形成する。その隙間Ｓに図１に示すよ
うに樹脂Ｒを充填して、表皮２０の開裂予定部形成位置
２２の部分が配置される平面部１２を、前記表皮受け面
１１の所定位置間に形成する。The manufacture of the receiving jig 10 is simple as follows. First, as shown in FIG. 3, a receiving jig manufacturing die 10 having a skin receiving surface 11 along the skin shape.
a is produced by a known method. Next, the receiving jig manufacturing mold 10a is divided into two parts in a direction corresponding to the vehicle front-rear direction of the skin 20 so as to pass through the part of the skin receiving surface 11 where the part of the expected skin portion forming position 22 of the skin 20 is disposed. I do. Symbols M1 and M2 are divided types. And FIG.
As shown in FIG.
A distance L1 along the skin receiving surface 11 between predetermined positions X and Y of the skin receiving surface 11 corresponding to both ends in the vehicle front-rear direction becomes equal to a linear distance between the same positions of the skin receiving surface 11 as shown in FIG. As described above, the split molds M1 and M2 are separated from each other, and the split molds M1 and M2 are separated.
A gap S is formed between M2. As shown in FIG. 1, the gap S is filled with the resin R, and the flat portion 12 on which the portion of the skin 20 at the portion 22 to be cleaved is formed is formed between predetermined positions on the skin receiving surface 11.
【００２１】また、前記受け治具１０には、この実施例
のように、表皮受け面１１で開口する真空吸引孔１５を
形成しておき、その真空吸引孔１５に通じるように接続
された受け治具１０外の吸引装置（図示せず）によって
表皮２０を吸着保持できるするようにしておくのが好ま
しい。As shown in this embodiment, the receiving jig 10 is formed with a vacuum suction hole 15 opened on the skin receiving surface 11, and the receiving jig 10 is connected to communicate with the vacuum suction hole 15. It is preferable that the outer skin 20 can be sucked and held by a suction device (not shown) outside the jig 10.
【００２２】前記構造の受け治具１０の表皮受け面１１
に前記表皮２０を、表皮２０裏面が上を向くようにする
とともに、開裂予定部形成位置２２が表皮受け面１１の
平面部１２に、また一般部２３が一般部受けが１３に位
置するようにしてセットする。その際、前記表皮２０の
ダボ２１ａを受け治具１０の突起１９にはめて表皮２０
を位置決め固定し、また前記真空吸引孔１５を介して表
皮２０を表皮受け面１１に吸着保持する。なお、受け治
具１０の表皮受け面１１に表皮をセットした際に、ヒー
ター等の加熱手段を使用して表皮を軟らかくすることに
より、該表皮を表皮受け面１１の形状に沿いやすくし、
より確実に支持できるようにしてもよい。The skin receiving surface 11 of the receiving jig 10 having the above structure.
The skin 20 is arranged so that the back surface of the skin 20 faces upward, the position 22 at which the planned tearing portion is formed is located on the flat portion 12 of the skin receiving surface 11, and the general portion 23 is located on the general portion receiving portion 13. Set. At this time, the dowels 21a of the skin 20 are received on the projections 19 of the jig 10, and the
Are positioned and fixed, and the skin 20 is sucked and held on the skin receiving surface 11 through the vacuum suction hole 15. In addition, when the epidermis is set on the epidermis receiving surface 11 of the receiving jig 10, the epidermis is softened by using a heating means such as a heater, so that the epidermis easily conforms to the shape of the epidermis receiving surface 11.
You may be made to be able to support more reliably.
【００２３】そして、前記表皮２０上方に配置した加工
刃３０で表皮２０の開裂予定部形成位置２２を表皮２０
裏面から所定圧で押圧し、溝状あるいはスリット状の開
裂予定部２２を表皮２０裏面に形成する。その際形成さ
れる開裂予定部２２の溝あるいはスリットの深さは、表
皮２０の厚みによって異なり、表皮２０の厚みが１ｍｍ
程度の場合、０．５ないし０．７ｍｍ程度とされる。な
お、加工刃３０はシリンダ装置等に取り付けられて、表
皮２０の開裂予定部形成位置２２へ向けて前進後退可能
とされる。Then, the position 22 where the to-be-cleaved portion of the skin 20 is to be formed is set by the machining blade 30 disposed above the skin 20.
A predetermined pressure is applied from the back surface to form a groove-shaped or slit-shaped scheduled cleavage portion 22 on the back surface of the skin 20. The depth of the grooves or slits of the to-be-cleaved portion 22 formed at that time varies depending on the thickness of the skin 20, and the thickness of the skin 20 is 1 mm.
In this case, it is set to about 0.5 to 0.7 mm. The processing blade 30 is attached to a cylinder device or the like, and is capable of moving forward and backward toward the position 22 at which the skin 20 is to be cleaved.
【００２４】前記加工刃３０は、開裂予定部の形状に応
じた形状、この例では平面視ほぼＨ字形からなり、その
刃先が受け治具１０の平面部１２に合わせて直線状の二
次元形状となっている。そのため、加工刃３０の製作が
容易で、しかも加工刃の製作コストが安価となり、さら
には長期使用等の際における加工刃３０の研磨も容易と
なる。また、表皮２０の開裂予定部形成位置２２は受け
治具１０の平面部１２で支持されるため、加工刃３０に
よる押圧時にずれ等を生じ難く、正確に開裂予定部を形
成することができる。さらに、前記押圧時には、表皮２
０を受け治具１０に吸着保持しているため、表皮２０の
開裂予定部形成位置２２がずれず、より正確に開裂予定
部を形成することができる。The processing blade 30 has a shape corresponding to the shape of the portion to be cleaved, in this example, is substantially H-shaped in plan view, and its cutting edge is a linear two-dimensional shape in accordance with the flat portion 12 of the receiving jig 10. It has become. Therefore, the fabrication of the processing blade 30 is easy, the manufacturing cost of the processing blade 30 is low, and the polishing of the processing blade 30 during long-term use is also facilitated. In addition, since the scheduled portion 22 for forming the scheduled tearing portion of the skin 20 is supported by the flat portion 12 of the receiving jig 10, it is unlikely to be displaced when pressed by the processing blade 30, and the scheduled tearing portion can be formed accurately. Further, at the time of the pressing, the skin 2
Since the receiving part 0 is sucked and held by the jig 10, the scheduled part 22 for forming the scheduled tearing portion of the skin 20 is not shifted, and the scheduled tearing part can be formed more accurately.
【００２５】図６および図７に示すものは、加工刃の他
の例である。図示の加工刃４０は、シリンダ装置等から
なる前進後退装置の先端部４１に、加工刃４０両側に配
置された弾性体４２ととともに取り付けられている。弾
性体４２は、前記加工刃４０が表皮２０の開裂予定部形
成位置２２を押圧する際に、加工刃４０両側で表皮２０
を受け治具１０に押圧固定するためのもので、それによ
り表皮２０のずれをより確実に防止して、正確に開裂予
定部を形成できるようにする。この弾性体４２は、ウレ
タンフォーム等の発泡体等やゴム等からなり、加工刃４
０の両側に沿って加工刃４０の刃先先端４１ａよりも所
定量突出して設けられる。その突出量は弾性４２体の硬
さ等により適宜決定されるが、通常数ｍｍ程度とされ
る。なお、この弾性体４２による表皮２０の押圧に加え
て、前記のように表皮２０を受け治具１０に吸着保持す
れば、押圧刃４０による表皮２０押圧固定作用と相まっ
て表皮２０の保持固定を一層確実に行え、より正確に開
裂予定部を形成することができるようになる。FIGS. 6 and 7 show another example of the machining blade. The illustrated processing blade 40 is attached to a distal end portion 41 of a forward and backward device such as a cylinder device together with elastic bodies 42 disposed on both sides of the processing blade 40. When the processing blade 40 presses the cut-off portion forming position 22 of the skin 20, the elastic body 42 holds the skin 20 on both sides of the processing blade 40.
This is for pressing and fixing to the receiving jig 10, whereby the displacement of the epidermis 20 is more reliably prevented, and the portion to be cleaved can be formed accurately. The elastic body 42 is made of foam or the like such as urethane foam, rubber, or the like.
Along the both sides of 0, it is provided so as to protrude by a predetermined amount from the blade tip 41a of the processing blade 40. The amount of protrusion is appropriately determined depending on the hardness of the elastic body 42 and the like, but is usually about several mm. In addition, if the skin 20 is received and held by the jig 10 as described above in addition to the pressing of the skin 20 by the elastic body 42, the holding and fixing of the skin 20 is further improved in combination with the pressing and fixing operation of the skin 20 by the pressing blade 40. This can be performed reliably, and the portion to be cleaved can be formed more accurately.
【００２６】[0026]
【発明の効果】以上図示し説明したように、この発明の
エアバッグドア用開裂予定部の形成方法によると、表皮
の開裂予定部形成位置を受け治具の平面部で支持しなが
ら加工刃で押圧して開裂予定部を形成するため、加工刃
の刃先を表皮の曲面形状に合わせて複雑な形状にする必
要がなく、加工刃の刃先を単純形状とすることができ
る。そのため、加工刃の製作が容易となるのみならず、
加工刃を安価に製作でき、その結果開裂予定部を経済的
に形成できる効果がある。しかも、表皮の開裂予定部形
成位置を平面部で支持するため、加工刃による押圧時に
表皮が均等に押されて皺やずれを生じにくく、正確に破
断予定部を形成できる。As shown and described above, according to the method for forming the airbag door to-be-cleaved portion according to the present invention, the position where the to-be-skin-to-be-cleaved portion is to be formed is supported by the flat part of the jig with the working blade. Since the to-be-cleaved portion is formed by pressing, the cutting edge of the processing blade does not need to be formed into a complicated shape according to the curved surface shape of the skin, and the cutting edge of the processing blade can be formed in a simple shape. Therefore, not only is it easier to manufacture the machining blade, but also
The processing blade can be manufactured at low cost, and as a result, there is an effect that the portion to be cleaved can be formed economically. In addition, since the position at which the expected skin tearing portion is formed is supported by the flat portion, the outer skin is evenly pressed when pressed by the processing blade, so that wrinkles and displacement are less likely to occur, and the expected breaking portion can be formed accurately.
【００２７】また、この発明においては、表皮が車種等
によって異なる曲面形状からなっても、表皮の開裂予定
部形成位置は受け治具の平面部で支持されて平面となる
ため、異なる種類の車室側部材に対しても同一の加工刃
を用いることができ、経済的である。In the present invention, even if the skin has a curved surface shape that differs depending on the type of vehicle or the like, the position at which the skin is to be torn is formed by a flat surface supported by the flat portion of the receiving jig. The same processing blade can be used for the chamber side member, which is economical.
【００２８】さらに、この発明において加工刃で表皮を
押圧する際、表皮を受け治具に吸着保持したり、加工刃
の両側に設けた弾性体で表皮を受け治具に押圧固定すれ
ば、加工刃による押圧時に表皮のずれを確実に防止で
き、一定かつ正確に開裂予定部を形成できるようにな
る。Further, in the present invention, when the skin is pressed by the working blade, the skin is sucked and held by a jig, or the skin is pressed and fixed to the jig by elastic bodies provided on both sides of the working blade. The displacement of the epidermis when pressed by the blade can be reliably prevented, and the part to be cleaved can be formed constantly and accurately.
【図１】この発明の一実施例における受け治具の断面図
である。FIG. 1 is a sectional view of a receiving jig according to an embodiment of the present invention.
【図２】表皮をセットした状態を示す断面図である。FIG. 2 is a cross-sectional view showing a state where a skin is set.
【図３】受け治具製作型の斜視図である。FIG. 3 is a perspective view of a receiving jig production type.
【図４】図３の４−４断面図である。FIG. 4 is a sectional view taken along line 4-4 of FIG. 3;
【図５】分割型分離時の断面図である。FIG. 5 is a sectional view at the time of split mold separation.
【図６】他の実施例における受け治具および加工刃の部
分断面図である。FIG. 6 is a partial sectional view of a receiving jig and a processing blade in another embodiment.
【図７】図６における加工刃による押圧時を示す部分断
面図である。FIG. 7 is a partial cross-sectional view showing a state in which the workpiece is pressed by a processing blade in FIG. 6;
【図８】従来の開裂予定部が形成されたインストルメン
トパネルを示す斜視図である。FIG. 8 is a perspective view showing a conventional instrument panel in which a scheduled cleavage portion is formed.
【図９】従来の開裂予定部が形成されたエアバッグドア
およびエアバッグドア装置を示す断面図である。FIG. 9 is a cross-sectional view showing a conventional airbag door and an airbag door device in which a portion to be cleaved is formed.
【図１０】従来の受け治具を示す斜視図である。FIG. 10 is a perspective view showing a conventional receiving jig.
１０ 受け治具 １１ 受け面 １２ 平面部 １３ 一般部受け面 ２０ 表皮 ２２ 開裂予定部形成位置 ２３ 一般部 ６４ 開裂予定部 ３０ 加工刃 ４０ 加工刃 ４６ 弾性体 DESCRIPTION OF SYMBOLS 10 Receiving jig 11 Receiving surface 12 Flat part 13 General part receiving surface 20 Skin 22 Expected cleavage part formation position 23 General part 64 Expected cleavage part 30 Processing blade 40 Processing blade 46 Elastic body
Claims (3)
めの表皮を受け治具にセットし、前記エアバッグドアに
対する表皮の開裂予定部形成位置を加工刃で押圧して、
エアバッグ膨張時に開裂する溝状またはスリット状の開
裂予定部を前記表皮に形成する方法であって、前記表皮
の開裂予定部形成位置を前記受け治具に形成された平面
部で支持しながら加工刃で押圧することを特徴とするエ
アバッグドア用開裂予定部の形成方法。1. A skin for a vehicle-side member having an airbag door is set on a receiving jig, and a position at which a scheduled tearing portion of the skin against the airbag door is formed is pressed by a processing blade.
A method for forming a groove-shaped or slit-shaped scheduled portion to be cleaved at the time of inflation of an airbag on the skin, wherein processing is performed while supporting a scheduled cleavage portion forming position of the skin by a flat portion formed on the receiving jig. A method for forming a tearable portion for an airbag door, characterized by pressing with a blade.
時、表皮を受け治具に吸着保持することを特徴とするエ
アバッグドア用開裂予定部の形成方法。2. The method according to claim 1, wherein the skin is sucked and held by a jig when pressed by a processing blade.
る押圧時に該加工刃の両側に設けた弾性体で表皮の開裂
予定部形成位置の両側を受け治具に押圧固定することを
特徴とするエアバッグドア用開裂予定部の形成方法。3. The jig according to claim 1, wherein the elastic member provided on both sides of the processing blade presses and fixes the both sides of the position where the expected skin is to be cleaved to the jig when pressed by the processing blade. A method for forming an airbag door to-be-cleaved part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9254138A JPH1177713A (en) | 1997-09-02 | 1997-09-02 | Method for forming cleavage-programmed part for air bag door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9254138A JPH1177713A (en) | 1997-09-02 | 1997-09-02 | Method for forming cleavage-programmed part for air bag door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1177713A true JPH1177713A (en) | 1999-03-23 |
Family
ID=17260755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9254138A Pending JPH1177713A (en) | 1997-09-02 | 1997-09-02 | Method for forming cleavage-programmed part for air bag door |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1177713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355985A (en) * | 2019-07-17 | 2019-10-22 | 西安交通大学 | A kind of rubber pocket precision corrector of large scale circular piece |
-
1997
- 1997-09-02 JP JP9254138A patent/JPH1177713A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110355985A (en) * | 2019-07-17 | 2019-10-22 | 西安交通大学 | A kind of rubber pocket precision corrector of large scale circular piece |
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