JPH02248238A - Production of coat for air-bag apparatus - Google Patents

Production of coat for air-bag apparatus

Info

Publication number
JPH02248238A
JPH02248238A JP2031686A JP3168690A JPH02248238A JP H02248238 A JPH02248238 A JP H02248238A JP 2031686 A JP2031686 A JP 2031686A JP 3168690 A JP3168690 A JP 3168690A JP H02248238 A JPH02248238 A JP H02248238A
Authority
JP
Japan
Prior art keywords
foil
line
range
tear
drawn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2031686A
Other languages
Japanese (ja)
Other versions
JPH0645184B2 (en
Inventor
Manfred Dr Mueller
マンフレート・ミユレル
Wolfgang Henseler
ヴオルフガング・ヘンゼレル
Egon Katz
エゴン・カツツ
Alban Bossenmaier
アルバン・ボツセンマイエル
Dietrich Hamm
デイートリヒ・ハム
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daimler Benz AG filed Critical Daimler Benz AG
Publication of JPH02248238A publication Critical patent/JPH02248238A/en
Publication of JPH0645184B2 publication Critical patent/JPH0645184B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/146—Shaping the lining before foaming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
    • B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
    • B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2165—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by a tear line for defining a deployment opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3038—Air bag covers

Abstract

PURPOSE: To upgrade an external appearance of a cover to be manufactured by deep drawing a continuous foil heated in a range of a planned tear-open line, forming a channel drawn-in in relation to an adjoining face adjacent to the range of the tear-open line, reducing a thickness of the foil for specifying the line, introducing the foil into a mold, and foaming the inside. CONSTITUTION: A continuous foil 2 to be heated in a range of a planned tear- open line is deeply drawn, and a channel drawn-in in relation to an adjoining face adjacent to the range of the tear-open line is formed. At a bottom 4 of the channel 3, a thickness of the foil 2 for defining the line is reduced by a high frequency embossing. Then, the foil is introduced into the mold, its inside is foamed, thereby obtaining the cover 1 for the airbag unit having a visually good external appearance.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、破裂線を持つ被覆が内側を発泡せしめられる
箔を持ち、この箔の内側発泡層が破裂線の範囲に被覆の
他の範囲におけるより小さい肉厚を持っている、自動車
におけるエアバラグ装置用被覆の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention comprises a foil whose coating with a rupture line is foamed on the inside, the inner foam layer of this foil being able to cover other areas of the coating in the area of the rupture line. The present invention relates to a method of manufacturing a coating for an airbag device in an automobile, which has a smaller wall thickness.

〔従来の技術〕[Conventional technology]

ドラ連邦共和国特許出願公開第３３１５５３５号明細書
から公知の広げることができるエアバッグ用の被覆では
、破裂線の範囲で２つの箔が互いに溶接されており、溶
接継目の破裂強さは箔自体の破裂強さより小さくなって
いる。このような被覆は確実な動作に関してそれに課さ
れるすべての要求を濶たすが、２つの箔を一緒にして工
具に通さねばならないため、その製造ｖ縁が高くなる。In the coating for an expandable airbag known from DE 3315535 A2, two foils are welded together in the region of the burst line, the bursting strength of the weld seam being dependent on the strength of the foil itself. It is smaller than the bursting strength. Although such a coating fulfills all the demands placed on it with regard to reliable operation, its production edges are high, since the two foils have to be passed together through the tool.

史に両方の箔の継ぎ目の個所が視覚的にもよい外観を持
つようにすることは国難である。Historically, it has been a national challenge to ensure that the joints of both foils have a visually pleasing appearance.

史にドラ連邦共和国特許出願公開第２６４３４５１号明
細書から、エアバッグのクツション炉に切込みを作る高
周波切断装置を使用することも既に公知である（７ペ一
ジ４〜５行） 〔発明が解決しようとする課題〕 本発明の基礎になっている課迦は、ドイツ連邦共和国特
許出願公開第３３１５５３号明細書による構造の欠点を
回膳し、製造される被覆の視覚的に申し分のない外観も
保証するエアバッグ装置用被覆の簡単な製造方法を提示
することである。It is also already known from Federal Republic of Germany Patent Application No. 2,643,451 to use a high-frequency cutting device to make cuts in the cushion furnace of an airbag (page 7, lines 4-5). The task on which the invention is based is to overcome the drawbacks of the construction according to DE 331 553 and to also ensure a visually satisfactory appearance of the produced coating. The purpose of the present invention is to present a simple method for manufacturing a coating for an airbag device that guarantees safety.

〔課題を解決するための手段〕[Means to solve the problem]

このｈａを解決するため本発明によれば、計画した破裂
線の範囲で加熱される連続箔を深絞りして、破裂線の範
囲に、隣接する面より引込む溝を形成し、溝底部におい
て高Ｒ波型押しにより、破裂線を規定する箔の肉厚減少
を行ない、箔を型へ入れて内側を発泡せしめる。In order to solve this problem, according to the present invention, a continuous foil that is heated in the range of the planned rupture line is deep drawn, a groove is formed in the range of the rupture line that is drawn in from the adjacent surface, and the bottom of the groove has a high height. R-wave embossing reduces the thickness of the foil to define the rupture line, and the foil is placed in a mold to foam inside.

〔実施例〕〔Example〕

本発明の方法により製造される被覆の実施例が図面に示
されている。An example of a coating produced by the method of the invention is shown in the drawing.

被覆ｌの外側を形成する箔２は、加熱された状態で深絞
り法例えば真空絞り法により変形されて、溝底部４を持
つ引込み溝３を形成する。The foil 2 forming the outside of the covering 1 is deformed in the heated state by deep drawing, for example by vacuum drawing, to form a lead-in groove 3 with a groove base 4 .

この溝底部４の範囲において、高周波型押しにより破裂
線を規定する肉厚減Φ５が行なわれる。In the region of this groove bottom 4, a wall thickness reduction Φ5 defining a rupture line is carried out by high-frequency embossing.

溝３の幅及び深さは、少なくとも皮相的な観察者には肉
厚減／Ｊ）部５が目に入らないように選ばれている。The width and depth of the groove 3 are chosen so that the reduced wall thickness 5 is not visible to at least a casual observer.

深絞りされた箔２はそれから発泡型へ入れられて、破裂
線の範囲に箔２と同様に肉厚の小さい範ｒ！Ｒ７を持つ
ように、内側発泡豹６を設けられる。The deep-drawn foil 2 is then placed in a foaming mold, and in the area of the rupture line there is a region r! with a small wall thickness similar to that of the foil 2! An inner foam leopard 6 is provided to have R7.

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

第１図は本発明による被抛の斜視図、第２図は第１図の
ｒｌ−ｘｘ腺による断面図である。 ・・・被覆、２・・・箔、３・・・溝、４・・・溝底部
、５・・・肉厚減少部 特許出願人　　ダイムラー−ベンツ・アクチェンゲゼル
シャフトFIG. 1 is a perspective view of a shield according to the present invention, and FIG. 2 is a sectional view taken along line RL-XX of FIG. 1. ...Coating, 2...Foil, 3...Groove, 4...Groove bottom, 5...Reduced wall thickness portion Patent applicant Daimler-Benz Akchengesellshaft

Claims (1)

【特許請求の範囲】 破裂線を持つ被覆が内側を発泡せしめられ る箔を持ち、この箔の内側発泡層が破裂線の範囲に被覆
の他の範囲におけるより小さい肉厚を持つているものに
おいて、計画した破裂線の範囲で加熱される連続箔（２
）を深絞りして、破裂線の範囲に、隣接する面より引込
む溝（３）を形成し、溝底部（４）において高周波型押
しにより、破裂線を規定する箔（２）の肉厚減少を行な
い、箔を型へ入れて内側を発泡せしめることを特徴とす
る、自動車におけるエアバッグ装置用被覆の製造方法。[Claims] The covering with a burst line has a foil which is foamed on the inside, and the inner foam layer of this foil has a smaller wall thickness in the region of the burst line than in other areas of the covering, Continuous foil (2
) is deep drawn to form a groove (3) that draws in from the adjacent surface in the area of the rupture line, and the thickness of the foil (2) that defines the rupture line is reduced by high-frequency embossing at the groove bottom (4). 1. A method for manufacturing a covering for an airbag device in an automobile, which comprises: placing the foil in a mold and foaming the inside thereof.
JP2031686A 1989-02-18 1990-02-14 Method for manufacturing coating for air bag device Expired - Fee Related JPH0645184B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904977A DE3904977C1 (en) 1989-02-18 1989-02-18
DE3904977.9 1989-02-18

Publications (2)

Publication Number Publication Date
JPH02248238A true JPH02248238A (en) 1990-10-04
JPH0645184B2 JPH0645184B2 (en) 1994-06-15

Family

ID=6374390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2031686A Expired - Fee Related JPH0645184B2 (en) 1989-02-18 1990-02-14 Method for manufacturing coating for air bag device

Country Status (6)

Country Link
JP (1) JPH0645184B2 (en)
DE (1) DE3904977C1 (en)
FR (1) FR2643306A1 (en)
GB (1) GB2228714B (en)
IT (1) IT1239593B (en)
SE (1) SE469121B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544714U (en) * 1991-08-09 1993-06-15 大同化成工業株式会社 Casing structure for inflatable occupant restraint system
US5698283A (en) * 1995-06-21 1997-12-16 Toyoda Gosei Co., Ltd. Air bag cover and manufacturing method for same
US5979931A (en) * 1995-12-12 1999-11-09 Toyoda Gosei Co., Ltd. Air bag cover
US6001295A (en) * 1995-03-31 1999-12-14 Toyoda Gosei Co., Ltd Manufacturing method of an air bag cover
KR20030051215A (en) * 2001-12-18 2003-06-25 예놉틱 아우토마티지어룽스테히닉 게엠베하 A treatment for bringing-in a tear seam in foil and thin form-part

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03254919A (en) * 1990-03-06 1991-11-13 Takata Kk Manufacture of module cover of air bag
WO1992014632A1 (en) * 1991-02-13 1992-09-03 Allied-Signal Inc. Air bag door with unzipping seam
CA2100286A1 (en) * 1992-08-13 1994-02-14 James Carter Hidden door for an air bag restraint system
DE4411283C1 (en) * 1994-03-31 1995-05-24 Daimler Benz Ag Method for mfr. of outer foil for vehicle airbag
DE19516230C2 (en) * 1995-05-03 1999-04-01 Eldra Kunststofftechnik Gmbh Airbag cover and process for its manufacture
DE19636428B4 (en) * 1996-09-07 2004-06-17 Jenoptik Ag Vehicle interior trim part with integrated airbag cover
DE19648138A1 (en) * 1996-11-21 1998-05-28 Opel Adam Ag Airbag cover
DE19653797A1 (en) * 1996-12-21 1998-06-25 Mst Automotive Gmbh Cover for an airbag module
DE10051836A1 (en) * 2000-10-19 2002-04-25 Bayerische Motoren Werke Ag Manufacturing process for a vehicle interior part with an airbag tear seam

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2053565A1 (en) * 1970-10-31 1972-05-04 Volkswagenwerk Ag, 3180 Wolfsburg Safety device
JPS5213701Y2 (en) * 1973-12-03 1977-03-28
JPS5243233A (en) * 1975-09-30 1977-04-05 Nissan Motor Co Ltd Cushion cover for air cushion device
CH628564A5 (en) * 1978-03-31 1982-03-15 Hoffmann Ag Geb Method for applying a predetermined breaking point in the form of a groove which weakens the cross-section to a sealing diaphragm intended for use in a can
DE3315535A1 (en) * 1983-04-29 1984-03-22 Daimler-Benz Ag, 7000 Stuttgart Cover for an inflatable gas bag
DE8713154U1 (en) * 1987-09-30 1987-11-12 Trw Repa Gmbh, 7077 Alfdorf, De
JPH01122753A (en) * 1987-11-05 1989-05-16 Sekisui Chem Co Ltd Air-bag storage casing
JPH0694266B2 (en) * 1989-02-20 1994-11-24 タカタ株式会社 Airbag storage cover

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0544714U (en) * 1991-08-09 1993-06-15 大同化成工業株式会社 Casing structure for inflatable occupant restraint system
US6001295A (en) * 1995-03-31 1999-12-14 Toyoda Gosei Co., Ltd Manufacturing method of an air bag cover
US5698283A (en) * 1995-06-21 1997-12-16 Toyoda Gosei Co., Ltd. Air bag cover and manufacturing method for same
US5989479A (en) * 1995-06-21 1999-11-23 Toyoda Gosei Co., Ltd. Method for manufacturing an air bag cover
US5979931A (en) * 1995-12-12 1999-11-09 Toyoda Gosei Co., Ltd. Air bag cover
KR20030051215A (en) * 2001-12-18 2003-06-25 예놉틱 아우토마티지어룽스테히닉 게엠베하 A treatment for bringing-in a tear seam in foil and thin form-part

Also Published As

Publication number Publication date
FR2643306A1 (en) 1990-08-24
GB9002146D0 (en) 1990-03-28
SE9000334L (en) 1990-08-19
GB2228714B (en) 1992-09-16
FR2643306B1 (en) 1994-08-19
JPH0645184B2 (en) 1994-06-15
DE3904977C1 (en) 1990-01-18
SE469121B (en) 1993-05-17
SE9000334D0 (en) 1990-01-31
IT1239593B (en) 1993-11-10
GB2228714A (en) 1990-09-05
IT9047635A1 (en) 1990-08-19
IT9047635A0 (en) 1990-02-15

Similar Documents

Publication Publication Date Title
US5180187A (en) Cover for an airbag unit and the process for producing it
JPH02248238A (en) Production of coat for air-bag apparatus
US5989479A (en) Method for manufacturing an air bag cover
US3966526A (en) Process for making resilient laminar panel
US4247586A (en) Noise reducing liner panels for vehicles
GB9714114D0 (en) Air bag
JP2001507993A (en) Tailored blanks
US6467146B1 (en) Method of forming of a tubular metal section
JPH1191350A (en) Sun visor for automobile
US20070163121A1 (en) Metal frame and method for manufacturing the same
US4119451A (en) Method of press-forming corrugated paperboard as substrate of curved trim board
US6623815B2 (en) Decorative component for use as a piece of trim of a vehicle
US7011512B2 (en) Laser ridge skin distortion reduction apparatus
GB2265208A (en) Thermally insulating laminated element
US5392625A (en) Method of making non-planar article from roll bonded metal sheets
US8171836B2 (en) Pre-weakened skin seam for an air bag deployment cover
JP2945559B2 (en) Method for manufacturing vehicle interior parts having airbag cover
EP1215036A1 (en) Foamed laminate sheet and method and apparatus for producing the foamed laminate sheet
CA2297035C (en) Method for producing an insulating pack for an insulating part
KR100235138B1 (en) Method of manufacturing a container for preserves
JPH0129688B2 (en)
US20020079677A1 (en) Instrument panel with integral hidden door cover and method of in-process manufacture thereof
CA1091724A (en) Automotive ceiling panel and process for manufacturing same
CA1094605A (en) Panel member and process for manufacturing same
JP5384024B2 (en) Synthetic resin skin material and method for producing the same

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees