JPH0645184B2 - Method for manufacturing coating for air bag device - Google Patents
Method for manufacturing coating for air bag deviceInfo
- Publication number
- JPH0645184B2 JPH0645184B2 JP2031686A JP3168690A JPH0645184B2 JP H0645184 B2 JPH0645184 B2 JP H0645184B2 JP 2031686 A JP2031686 A JP 2031686A JP 3168690 A JP3168690 A JP 3168690A JP H0645184 B2 JPH0645184 B2 JP H0645184B2
- Authority
- JP
- Japan
- Prior art keywords
- foil
- coating
- rupture line
- air bag
- bag device
- 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.)
- Expired - Fee Related
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
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つている、自動車
におけるエアバツグ装置用被覆の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The invention has a coating having a rupture line having a foil which is foamed on the inside, the inner foam layer of the foil being in the range of the rupture line and other areas of the coating. And a method for manufacturing a coating for an air bagging device in a motor vehicle, which has a smaller wall thickness.
ドツ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ツグ用の被覆では、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つている。
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
べての要求を満たすが、２つの箔を一緒にして工具に通
さねばならないため、その製造費が高くなる。更に両方
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
することは困難である。In the coating for expandable air bag known from DE-A-3315535, two foils are welded to each other in the region of the rupture line, the rupture strength of the weld seam being the rupture of the foil itself. It is smaller than strength.
Although such a coating fulfills all the requirements placed on it for reliable operation, its production costs are high because the two foils must be run through the tool together. Furthermore, it is difficult to make the joints of both foils have a visually pleasing appearance.
更にドツ連邦共和国特許出願公開第2643451号明細書か
ら、エアバツグのクツシヨン層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ページ４〜
５行）。Furthermore, it is already known from the German patent application DE 264 3451 A2 to use a high-frequency cutting device for making a cut in the cushion layer of an air bag (page 7, 4-4).
5 lines).
本発明の基礎になつている課題は、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避
し、製造される被覆の視覚的に申し分のない外観も保証
するエアバツグ装置用被覆の簡単な製造方法を提示する
ことである。The problem underlying the invention is that of a coating for an air bagging device which avoids the disadvantages of the construction according to DE 331553 and guarantees also a visually pleasing appearance of the coating produced. The purpose is to present a simple manufacturing method.
この課題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
て高周波型押しにより、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。According to the present invention to solve this problem, the continuous foil heated in the range of the planned rupture line is deep-drawn, and in the range of the rupture line, a groove to be drawn from the adjacent surface is formed, and a high frequency wave is formed at the groove bottom. The embossing reduces the wall thickness of the foil that defines the rupture line and puts the foil into the mold to foam the inside.
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 present invention is shown in the drawings.
被覆１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。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少５が
行なわれる。The foil 2 forming the outside of the coating 1 is deformed in the heated state by a deep drawing method, for example a vacuum drawing method, to form a drawing groove 3 having a groove bottom 4. In the range of the groove bottom portion 4, the thickness reduction 5 that defines the rupture line is performed by the 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
厚減少部５が目に入らないように選ばれている。The width and the depth of the groove 3 are selected so that the reduced thickness portion 5 is not visible to at least an apparent 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囲７を持つよう
に、内側発泡層６を設けられる。The deep-drawn foil 2 is then placed in a foam mold and provided with an inner foam layer 6 so as to have an area 7 of small wall thickness in the area of the rupture line, like the foil 2.
第１図は本発明による被覆の斜視図、第２図は第１図の
II−II線による断面図である。 １…被覆、２…箔、３…溝、４…溝底部、５…肉厚減少
部1 is a perspective view of a coating according to the present invention, and FIG. 2 is a perspective view of FIG.
It is sectional drawing by the II-II line. 1 ... Coating, 2 ... Foil, 3 ... Groove, 4 ... Groove bottom portion, 5 ... Wall thickness reduced portion
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 9:00 4Ｆ 22:00 4Ｆ 31:30 4Ｆ (72)発明者 エゴン・カツツ ドイツ連邦共和国ナーゴルト７・ベートー ベンシユトラーセ10 (72)発明者 アルバン・ボツセンマイエル ドイツ連邦共和国ゴイフエルデン１・ベル ヒエンシユトラーセ46 (72)発明者 デイートリヒ・ハム ドイツ連邦共和国ジンデルフインゲン・エ ツシエンリートシユトラーセ19─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical display location B29L 9:00 4F 22:00 4F 31:30 4F (72) Inventor Egon Katz Nagert, Federal Republic of Germany 7. Beethoven Schutlerse 10 (72) Inventor Alban Botsenmeier, Federal Republic of Germany Goifelden 1-Belchienschutraße 46 (72) Inventor Dietrich Ham, Federal Republic of Germany Sindelfingen Ettschienried Schutlerse 19
Claims (1)
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ツグ装置用被覆の製造方
法。1. A plan, wherein the coating with a rupture line has a foil which is foamed on the inside, wherein the inner foam layer of this foil has a smaller wall thickness in the area of the rupture line in the other areas of the coating. The continuous foil (2) heated in the range of the rupture line was deep-drawn to form a groove (3) drawn from the adjacent surface in the range of the rupture line, and by high-frequency embossing at the groove bottom (4), A method for producing a coating for an air bag device in an automobile, comprising reducing a thickness of a foil (2) defining a burst line and putting the foil into a mold to foam the inside.
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 JPH02248238A (en) | 1990-10-04 |
| JPH0645184B2 true 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) |
Families Citing this family (14)
| 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 |
| 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 |
| CA2100286A1 (en) * | 1992-08-13 | 1994-02-14 | Davidson Textron Inc. | 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 |
| US6001295A (en) * | 1995-03-31 | 1999-12-14 | Toyoda Gosei Co., Ltd | Manufacturing method of an air bag cover |
| DE19516230C2 (en) * | 1995-05-03 | 1999-04-01 | Eldra Kunststofftechnik Gmbh | Airbag cover and process for its manufacture |
| EP0749872B1 (en) * | 1995-06-21 | 2003-04-23 | Toyoda Gosei Co., Ltd. | Air bag cover and method of manufacturing the same |
| JPH09156445A (en) * | 1995-12-12 | 1997-06-17 | Toyoda Gosei Co Ltd | Air bag cover |
| 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 |
| DE10164528A1 (en) * | 2001-12-18 | 2003-07-10 | Jenoptik Automatisierungstech | Process for making a tear seam in films and thin molded parts |
Family Cites Families (8)
| 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 | Covering a driver-side gas bag impact protection device in motor vehicles |
| 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 |
-
1989
- 1989-02-18 DE DE3904977A patent/DE3904977C1/de not_active Expired - Lifetime
-
1990
- 1990-01-31 SE SE9000334A patent/SE469121B/en not_active IP Right Cessation
- 1990-01-31 GB GB9002146A patent/GB2228714B/en not_active Expired - Fee Related
- 1990-02-14 JP JP2031686A patent/JPH0645184B2/en not_active Expired - Fee Related
- 1990-02-15 IT IT47635A patent/IT1239593B/en active IP Right Grant
- 1990-02-16 FR FR9001902A patent/FR2643306A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2643306B1 (en) | 1994-08-19 |
| JPH02248238A (en) | 1990-10-04 |
| GB9002146D0 (en) | 1990-03-28 |
| GB2228714A (en) | 1990-09-05 |
| GB2228714B (en) | 1992-09-16 |
| SE469121B (en) | 1993-05-17 |
| IT1239593B (en) | 1993-11-10 |
| DE3904977C1 (en) | 1990-01-18 |
| IT9047635A0 (en) | 1990-02-15 |
| IT9047635A1 (en) | 1990-08-19 |
| SE9000334L (en) | 1990-08-19 |
| SE9000334D0 (en) | 1990-01-31 |
| FR2643306A1 (en) | 1990-08-24 |
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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 |