JP2002316608A - Method for forming opening part for airbag, and interior trim for car having opening part for airbag - Google Patents
Method for forming opening part for airbag, and interior trim for car having opening part for airbagInfo
- Publication number
- JP2002316608A JP2002316608A JP2001123028A JP2001123028A JP2002316608A JP 2002316608 A JP2002316608 A JP 2002316608A JP 2001123028 A JP2001123028 A JP 2001123028A JP 2001123028 A JP2001123028 A JP 2001123028A JP 2002316608 A JP2002316608 A JP 2002316608A
- Authority
- JP
- Japan
- Prior art keywords
- airbag
- interior material
- laser
- hinge member
- resin
- 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
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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0054—Shaping techniques involving a cutting or machining operation partially cutting through the material
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
- B29C53/06—Forming folding lines by pressing or scoring
-
- 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
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
- B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
- B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/16—Laser beams
- B29C65/1629—Laser beams characterised by the way of heating the interface
- B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7841—Holding or clamping means for handling purposes
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/81266—Optical properties, e.g. transparency, reflectivity
- B29C66/81267—Transparent to electromagnetic radiation, e.g. to visible light
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/863—Robotised, e.g. mounted on a robot arm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
-
- 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
- Air Bags (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エアバッグ展開用
扉部と自動車用内装材とを樹脂製のヒンジ部材で連結し
たエアバッグ用開口部の形成方法及びエアバッグ用開口
部を備えた自動車用内装材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an airbag opening in which an airbag deployment door and an automobile interior material are connected by a hinge member made of resin, and an automobile having an airbag opening. Related to interior materials.
【０００２】[0002]
【従来の技術】図５は従来のエアバッグ用開口部を備え
た自動車用内装部材（インストルメントパネル）の断面
図であり、内装材１００にはその裏側に装着したエアバ
ッグ装置１０１に対応する領域の輪郭及びその領域を２
分する中心線に沿って薄肉状あるいはティアーライン状
の脆弱部１０３が形成され、エアバッグ展開時に該脆弱
部１０３が破断し、脆弱部１０３で囲われる部分が１対
のリッド１０４，１０４となって開放されるようにして
いる。2. Description of the Related Art FIG. 5 is a sectional view of a conventional automobile interior member (instrument panel) having an airbag opening. The interior material 100 corresponds to an airbag device 101 mounted on the back side thereof. The outline of the area and the area
A thin or tear line-shaped weak portion 103 is formed along the dividing center line, and the weak portion 103 is broken when the airbag is deployed, and the portion surrounded by the weak portion 103 becomes a pair of lids 104, 104. To be open to the public.
【０００３】そして、内装材１００の裏面に各リッド１
０４，１０４をその外側の内装材１００に連結する金属
製のヒンジプレート１０５を取り付け、エアバッグ展開
時にリッド１０４，１０４が飛散することを防止してい
る。[0003] Each lid 1 is attached to the back of the interior material 100.
A hinge plate 105 made of metal is attached to connect the inner and outer members 04 and 104 to the outer material 100 to prevent the lids 104 and 104 from scattering when the airbag is deployed.
【０００４】また、先行技術として、特開平８−２８２
４２０号公報及び特開２０００−３３８４４号公報に
は、内装材にレーザ照射ヘッドからレーザ光を照射して
弱化線部（脆弱部）を形成する方法が記載されている。As a prior art, Japanese Patent Application Laid-Open No. 8-282
No. 420 and JP-A-2000-33844 describe a method of irradiating a laser beam from a laser irradiation head to an interior material to form a weakened line portion (fragile portion).
【０００５】また、特開昭６２−６２７３４号公報に
は、重ね合わせた熱可塑性樹脂の接合部にデフォーカス
したレーザビームを投射することにより熱可塑性樹脂を
接合する方法が記載されている。Japanese Patent Application Laid-Open No. 62-62734 discloses a method of joining thermoplastic resins by projecting a defocused laser beam onto a joint of the overlapped thermoplastic resins.
【０００６】[0006]
【発明が解決しようとする課題】従来のエアバッグ用開
口部は、エアバッグ作動時に破断されてリッドとなって
開放される部分とその外側の内装材部分とを金属製のヒ
ンジプレートを用いて連結することで、エアバッグ展開
時にリッドが飛散するのを防止している。In a conventional airbag opening, a portion that is broken and opened as a lid when the airbag is activated and an interior material portion outside the lid are formed using a metal hinge plate. The connection prevents the lid from scattering when the airbag is deployed.
【０００７】このため内装材にボルトをインサート成形
する必要があり内装材の構造が複雑になるとともに、金
属製のヒンジプレートをナットを用いて締め付け固定す
る必要があり組み付けに工数がかかるという問題があ
る。また、リサイクル時に金属部材を取り外す必要があ
り、一体でリサイクルできないという欠点がある。[0007] For this reason, it is necessary to insert-mold bolts into the interior material, which complicates the structure of the interior material. In addition, it is necessary to fasten and fix a metal hinge plate using a nut, which requires a lot of man-hours for assembly. is there. In addition, there is a disadvantage that the metal member needs to be removed at the time of recycling, and it cannot be recycled as one.
【０００８】[0008]
【課題を解決するための手段】前記課題を解決するため
本発明に係るエアバッグ用開口部の形成方法は、レーザ
吸収性を有する樹脂からなる自動車用内装材にレーザ加
工によってエアバッグ用開口部を画成する脆弱部を形成
し、この後、前記脆弱部を跨いでレーザ透過性を有する
樹脂製のヒンジ部材を重ね、この状態でヒンジ部材側か
らレーザ光を照射して前記自動車用内装材を加熱溶融せ
しめ前記ヒンジ部材と融着するようにした。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a method of forming an airbag opening according to the present invention is directed to an airbag opening formed by laser processing an automotive interior material made of a resin having a laser absorbing property. After that, a hinge member made of a resin having laser transparency is overlapped over the fragile portion, and in this state, laser light is irradiated from the hinge member side to form the interior material for automobiles. Was melted by heating to fuse with the hinge member.
【０００９】また、本発明に係るエアバッグ用開口部を
備えた自動車用内装材は、脆弱部にてエアバッグ展開用
扉部が画成された樹脂製の自動車用内装材であって、こ
の自動車用内装材は前記脆弱部を跨ぐように樹脂製のヒ
ンジ部材が内装材に融着して構成した。The vehicle interior material having an airbag opening according to the present invention is a resin interior material for a vehicle in which an airbag deployment door is defined by a fragile portion. The interior material for automobiles was formed by fusing a hinge member made of resin to the interior material so as to straddle the fragile portion.
【００１０】自動車用内装材にレーザ加工によって脆弱
部を形成することでエアバッグ作動時に破断されて開口
部となるエアバッグ展開用扉部が区画形成される。脆弱
部を跨いでレーザ透過性を有する樹脂製のヒンジ部材を
配設し、ヒンジ部材の上部からレーザ光を照射して自動
車用内装材の表面を加熱溶融することで、ヒンジ部材と
自動車用内装材とを溶着接合することができる。これに
より、エアバッグ展開用扉部と自動車用内装材とはヒン
ジ部材を介して連結される。よって、エアバッグ作動時
にエアバッグ展開用扉部が飛散することはない。[0010] By forming a fragile portion in the interior material for an automobile by laser processing, an airbag deploying door portion which is broken when the airbag is activated and becomes an opening is defined. A hinge member made of a resin having a laser transmittance property is provided across the fragile portion, and a laser beam is irradiated from above the hinge member to heat and melt the surface of the interior material for an automobile, thereby forming the hinge member and the interior of the automobile. The material can be welded and joined. Thus, the door portion for deploying the airbag and the vehicle interior material are connected via the hinge member. Therefore, the airbag deployment door does not scatter when the airbag is activated.
【００１１】尚、自動車用内装材とヒンジ部材とを同じ
種類の樹脂（例えばポリプロピレンなど）で形成するこ
とで、リサイクル時により有利である。[0011] It is more advantageous at the time of recycling that the interior material for the automobile and the hinge member are formed of the same type of resin (eg, polypropylene).
【００１２】[0012]
【発明の実施の形態】以下に本発明の実施の形態を添付
図面に基づいて説明する。図１は本発明に係るエアバッ
グ用開口部を備えた自動車用内装材の要部斜視図、図２
は本発明に係るエアバッグ用開口部を備えた自動車用内
装材の要部断面図である。図１は自動車用内装材１を裏
面側から見た状態を示しており、図２は図１のａ−ａ線
断面を示す。Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of a main part of an interior material for an automobile having an opening for an airbag according to the present invention.
1 is a sectional view of a main part of an interior material for a vehicle having an airbag opening according to the present invention. FIG. 1 shows a state in which the interior material 1 for a vehicle is viewed from the back side, and FIG. 2 shows a cross section taken along line aa of FIG.
【００１３】自動車用内装材１は、裏面側の樹脂製基材
１ａと、中間の発泡層（ウレタンフォーム）１ｂと、樹
脂製表皮１ｃの３層構造となっている。この内装材１に
対して先ず脆弱部（ティアーライン）３をレーザ加工に
よって形成する。この脆弱部（ティアーライン）３によ
って１対のリッド（エアバッグ展開用扉部）４，４を区
画形成する。The vehicle interior material 1 has a three-layer structure of a resin base material 1a on the back side, an intermediate foam layer (urethane foam) 1b, and a resin skin 1c. First, a fragile portion (tier line) 3 is formed on the interior material 1 by laser processing. A pair of lids (airbag deployment doors) 4 and 4 are defined by the fragile portions (tier lines) 3.
【００１４】次に、ヒンジ部材１５を脆弱部（ティアー
ライン）３を跨いで重ね、クランプ治具２０を用いてヒ
ンジ部材１５を内装材１の裏面側に密着させる。ヒンジ
部材１５はレーザ透過性を有する樹脂製であり、具体的
にはＴＰＯ（サーモプラスチック・ポリオレフィン（ポ
リオレフィン系熱可塑性樹脂））を用いて形成してい
る。Next, the hinge member 15 is overlapped over the weak portion (the tear line) 3, and the hinge member 15 is brought into close contact with the back surface of the interior material 1 using the clamp jig 20. The hinge member 15 is made of a resin having laser transparency, and is specifically formed using TPO (thermoplastic polyolefin (polyolefin-based thermoplastic resin)).
【００１５】なお、ヒンジ部材１５としては、ポリプロ
ピレンとゴム成分を混合して作られたサーモプラスチッ
ク・ポリオレフィン弾性シートを用いて形成してもよ
い。また、本実施の形態ではヒンジ部材１５は板状の形
状としているが、エアバッグ装置等に係合等するフラン
ジ部等を備える形状としてもよい。The hinge member 15 may be formed using a thermoplastic polyolefin elastic sheet made by mixing polypropylene and a rubber component. Further, in the present embodiment, the hinge member 15 has a plate-like shape, but may have a shape including a flange portion or the like that engages with an airbag device or the like.
【００１６】次に、ヒンジ部材１５側からレーザ光（例
えば赤外レーザ光）を照射して樹脂製基材１ａとヒンジ
部材１５とを加熱溶着する。符号１０は加熱溶着された
接合部である。加熱溶着に用いるレーザ光は、ＹＡＧレ
ーザ装置や半導体レーザ装置を用いて発生させる。Next, a laser beam (for example, an infrared laser beam) is irradiated from the hinge member 15 side, and the resin base material 1a and the hinge member 15 are heated and welded. Reference numeral 10 denotes a welded portion welded by heating. Laser light used for heat welding is generated using a YAG laser device or a semiconductor laser device.
【００１７】樹脂製基材１ａの表面（接合部１０）の所
定領域にレーザ光が照射するようにする。このとき、レ
ーザビームによって脆弱部（ティアーライン）３を切削
加工する場合よりもレーザ出力を低くし、または、同一
領域に対するレーザ照射時間を短くし、かつレーザビー
ムの焦点位置を接合部から少しずらして接合部にデフォ
ーカスしたレーザビームを照射することで、接合部を加
熱溶着する。図１に示すように、接合部１０はエアバッ
グ展開用扉部であるリッド４側及びリッド４に接する樹
脂製基材１ａの双方に帯状に形成する。A predetermined area on the surface (joining portion 10) of the resin base material 1a is irradiated with laser light. At this time, the laser output is made lower than the case where the fragile portion (the tear line) 3 is cut by the laser beam, or the laser irradiation time for the same region is shortened, and the focal position of the laser beam is slightly shifted from the joint. The joint is heated and welded by irradiating the joint with a defocused laser beam. As shown in FIG. 1, the joining portion 10 is formed in a strip shape on both the lid 4 side, which is the door portion for deploying the airbag, and the resin base material 1 a in contact with the lid 4.
【００１８】ここで、樹脂製基材１ａをレーザ吸収性を
有する樹脂、例えばカーボンブラックを混合した樹脂で
形成することで、レーザ光による加熱溶着を効果的に行
なうことができる。Here, when the resin base material 1a is formed of a resin having a laser absorbing property, for example, a resin mixed with carbon black, the heat welding by the laser beam can be effectively performed.
【００１９】以上においてエアバッグが作動した際に
は、エアバッグの展開に伴って脆弱部（ティアーライ
ン）３が破断され、各リッド４，４はヒンジ部材１５に
支持された状態で開放される。As described above, when the airbag is operated, the fragile portion (tear line) 3 is broken with the deployment of the airbag, and each of the lids 4, 4 is opened while being supported by the hinge member 15. .
【００２０】脆弱部（ティアーライン）３の形成と加熱
溶着は別々のレーザにて行なっても良いが、ＹＡＧレー
ザまたは半導体レーザを用いれば同一のレーザで済み、
効率的である。なお、脆弱部３の形成にＣＯ2 レーザを
用いて脆弱部３の穴開け加工を高精度に行なった後に、
ＹＡＧレーザまたは半導体レーザを用いてヒンジ部材１
５の加熱溶着を行なうようにしてもよい。The formation of the fragile portion (tear line) 3 and the heat welding may be performed by separate lasers, but the same laser may be used if a YAG laser or a semiconductor laser is used.
It is efficient. In addition, after performing the boring process of the fragile part 3 with high precision using a CO 2 laser to form the fragile part 3,
Hinge member 1 using YAG laser or semiconductor laser
The heat welding of No. 5 may be performed.
【００２１】図３はレーザ加工設備の一具体例を示す図
である。レーザ加工設備は、内装材１を保持するハンド
リングロボット３０と、レーザ発振器３１と、レーザ発
振器３１からのレーザ光をミラー３２を介して入射する
レーザ照射ヘッド３３とを備える。FIG. 3 is a diagram showing a specific example of the laser processing equipment. The laser processing equipment includes a handling robot 30 that holds the interior material 1, a laser oscillator 31, and a laser irradiation head 33 that receives laser light from the laser oscillator 31 via a mirror 32.
【００２２】脆弱部３の形成は、内装材１をその裏面に
レーザ照射ヘッド３３からのレーザ光が照射されるよう
に保持し、この状態でレーザ照射ヘッド３３が内装材１
に対し脆弱部３を形成すべき所定の軌跡に沿って一定速
度で移動するように、ハンドリングロボット３０で内装
材１をレーザ照射ヘッド３３に対し相対移動させる。な
お、内装材１に代えてレーザ照射ヘッド３３をロボット
等の自動機で移動することも可能である。The fragile portion 3 is formed by holding the interior material 1 so that the back surface thereof is irradiated with laser light from the laser irradiation head 33, and in this state, the laser irradiation head 33
The interior material 1 is moved relative to the laser irradiation head 33 by the handling robot 30 so that the interior material 1 moves at a constant speed along a predetermined trajectory on which the fragile portion 3 is to be formed. The laser irradiation head 33 can be moved by an automatic machine such as a robot instead of the interior material 1.
【００２３】符号３４はメインコントローラであり、ハ
ンドリングロボット３０のロボットコントローラ３５か
らメインコントローラ３４に起動信号が入力された後、
メインコントローラ３４から一定時間間隔でトリガパル
スを発生させ、トリガパルスによりフリップフロップ３
６とレーザコントローラ３７とを介してレーザ発振器３
１を作動させる。Reference numeral 34 denotes a main controller. After a start signal is input from the robot controller 35 of the handling robot 30 to the main controller 34,
A trigger pulse is generated from the main controller 34 at regular time intervals, and the flip-flop 3 is generated by the trigger pulse.
6 through the laser controller 37 and the laser controller 37
Activate 1
【００２４】レーザ照射ヘッド３３に対し内装材１を挟
んで対向する受光センサ３８を設け、受光センサ３８の
出力信号を比較器３９に入力して、受光センサ３８の出
力信号が所定レベルに上昇したとき、比較器３９からの
中断信号たるハイレベルの信号が発生され、この信号で
フリップフロップ３６の出力信号を反転させ、レーザコ
ントローラ３７によりレーザ発振器３１の作動を停止さ
せる。A light receiving sensor 38 is provided to face the laser irradiation head 33 with the interior material 1 interposed therebetween. An output signal of the light receiving sensor 38 is input to a comparator 39, and the output signal of the light receiving sensor 38 rises to a predetermined level. At this time, a high-level signal, which is an interruption signal, is generated from the comparator 39, the output signal of the flip-flop 36 is inverted by this signal, and the operation of the laser oscillator 31 is stopped by the laser controller 37.
【００２５】したがって、トリガパルスに同期してレー
ザ照射ヘッド３３から内装材１にレーザ光が照射され、
内装材１の材料が裏側から焼失して最終的に表皮１ｃに
孔があき、受光センサ３８にこの孔を通してレーザ光が
到達して、受光センサ３８の出力信号が所定レベルに上
昇したところで次のトリガパルスが発生されるまでレー
ザ照射が中断される。そのため、内装材１に、図４に示
すように、深さが周期的に変化する脆弱部３が形成され
る。なお、表皮１ｃに形成された孔はミクロンオーダー
の極めて小さいもので目視できる程度のものではないの
で、内装材１の外観を損なうことはない。Therefore, the interior material 1 is irradiated with laser light from the laser irradiation head 33 in synchronization with the trigger pulse.
When the material of the interior material 1 is burned from the back side and finally a hole is formed in the skin 1c, the laser beam reaches the light receiving sensor 38 through this hole, and when the output signal of the light receiving sensor 38 rises to a predetermined level, the next Laser irradiation is interrupted until a trigger pulse is generated. Therefore, as shown in FIG. 4, a fragile portion 3 whose depth changes periodically is formed in the interior material 1. Note that the holes formed in the skin 1c are extremely small in the order of microns and are not visible enough, so that the appearance of the interior material 1 is not impaired.
【００２６】脆弱部３を形成した後に、図１及び図２に
示したように、各ヒンジ部材１５を脆弱部３を跨いで載
置し、クランプ治具２０を用いてヒンジ部材１５を固定
した状態で接合部１０にデフォーカスしたレーザビーム
を照射して、ヒンジ部材１５と樹脂製基材１ａとを加熱
溶着する。図３に示したレーザ加工装置を用いる場合
は、ハンドリングロボット３０によってヒンジ部材１５
が載置された内装材１を所定の接合ラインに沿って移動
させることで、ヒンジ部材１５の長さ方向のほぼ全範囲
に亘って接合部１０を形成する。なお、ヒンジ部材１５
が載置された内装材１を受け治具上に固定しておき、レ
ーザ照射ヘッド３３をロボット等の自動機で移動するよ
うにしてもよい。After the fragile portion 3 is formed, as shown in FIGS. 1 and 2, each hinge member 15 is placed across the fragile portion 3, and the hinge member 15 is fixed using the clamp jig 20. In this state, the joint portion 10 is irradiated with a defocused laser beam, and the hinge member 15 and the resin base material 1a are heated and welded. In the case of using the laser processing apparatus shown in FIG.
By moving the interior material 1 on which is mounted along a predetermined joining line, the joining portion 10 is formed over almost the entire range in the length direction of the hinge member 15. The hinge member 15
The laser irradiation head 33 may be moved by an automatic machine such as a robot, in which the interior material 1 on which is mounted is fixed on a jig.
【００２７】[0027]
【発明の効果】以上説明したように本発明によれば、内
装材の本体側とエアバッグ展開時に破断されるリッド
（エアバッグ展開用扉部）とを連結するヒンジ部材を樹
脂製とし、レーザ加工によって両者を接合するようにし
たので、ヒンジ部材の取り付け工数を削減でき、エアバ
ッグ用開口部を備えた自動車用内装材の加工工程のサイ
クルタイムを短縮できる。また、従来の金属製ヒンジ及
びそれを取り付けるためのボルト、ナットが不要となる
ので、エアバッグ用開口部を備えた自動車用内装材を軽
量化できるともに、リサイクル時にそれらの金属部品を
取り外す必要がなくなる。As described above, according to the present invention, the hinge member for connecting the body side of the interior material and the lid (airbag deployment door portion) which is broken when the airbag is deployed is made of resin, and the laser is used. Since the two are joined by processing, the number of steps for attaching the hinge member can be reduced, and the cycle time of the process of processing the interior material for an automobile having the airbag opening can be reduced. In addition, since conventional metal hinges and bolts and nuts for attaching the metal hinges are not required, it is possible to reduce the weight of automobile interior materials having an airbag opening, and it is necessary to remove those metal parts during recycling. Disappears.
【図１】本発明に係るエアバッグ用開口部を備えた自動
車用内装材の要部斜視図FIG. 1 is a perspective view of a main part of an interior material for an automobile having an airbag opening according to the present invention.
【図２】本発明に係るエアバッグ用開口部を備えた自動
車用内装材の要部断面図FIG. 2 is a cross-sectional view of a main part of an interior material for an automobile having an opening for an airbag according to the present invention.
【図３】レーザ加工設備の一具体例を示す図FIG. 3 is a diagram showing a specific example of a laser processing facility.
【図４】脆弱部の長手方向に沿った拡大断面図FIG. 4 is an enlarged sectional view along a longitudinal direction of a fragile portion.
【図５】従来のエアバッグ用開口部を備えた自動車用内
装部材の断面図FIG. 5 is a cross-sectional view of an interior member for a vehicle having a conventional airbag opening.
１…自動車用内装材、１ａ…樹脂製基材、１ｂ…発泡層
（ウレタンフォーム）、１ｃ…樹脂製表皮、３…脆弱
部、４…リッド（エアバッグ展開用扉部）、１０…接合
部、１５…樹脂製のヒンジ部材、２０…クランプ治具、
３３…レーザ照射ヘッド。DESCRIPTION OF SYMBOLS 1 ... Automotive interior material, 1a ... Resin base material, 1b ... Foam layer (urethane foam), 1c ... Resin skin, 3 ... Fragile part, 4 ... Lid (Airbag deployment door part), 10 ... Joint part , 15 ... resin hinge member, 20 ... clamp jig,
33 ... Laser irradiation head.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 若林 一城 埼玉県狭山市新狭山１丁目10番地１ ホン ダエンジニアリング株式会社内 Ｆターム(参考） 3D054 BB09 BB23 FF04 FF17 4F211 AA11 AD05 AD24 AG03 AG07 AG28 AH26 TA01 TC03 TC14 TD11 TH02 TH17 TN27 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Ichijo Wakabayashi 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. F-term (reference) 3D054 BB09 BB23 FF04 FF17 4F211 AA11 AD05 AD24 AG03 AG07 AG28 AH26 TA01 TC03 TC14 TD11 TH02 TH17 TN27
Claims (3)
車用内装材にレーザ加工によってエアバッグ用開口部を
画成する脆弱部を形成し、この後、前記脆弱部を跨いで
レーザ透過性を有する樹脂製のヒンジ部材を重ね、この
状態でヒンジ部材側からレーザ光を照射して前記自動車
用内装材を加熱溶融せしめ前記ヒンジ部材と融着するこ
とを特徴とするエアバッグ用開口部の形成方法。1. A vulnerable portion defining an opening for an airbag is formed by laser processing on an interior material for an automobile made of a resin having a laser absorptivity, and then has a laser transmissivity across the vulnerable portion. A method of forming an opening for an airbag, comprising: stacking a resin hinge member, irradiating a laser beam from the hinge member side in this state, heating and melting the interior material for a vehicle, and fusing with the hinge member. .
形成方法において、前記自動車用内装材と前記ヒンジ部
材とは同じ種類の樹脂からなることを特徴とするエアバ
ッグ用開口部の形成方法。2. The method for forming an opening for an airbag according to claim 1, wherein the interior material for a vehicle and the hinge member are made of the same type of resin. Method.
された樹脂製の自動車用内装材であって、この自動車用
内装材は前記脆弱部を跨ぐように樹脂製のヒンジ部材が
内装材に融着していることを特徴とするエアバッグ用開
口部を備えた自動車用内装材。3. A resin interior material for a vehicle in which an airbag deployment door portion is defined by a fragile portion, wherein the interior material for a vehicle has a hinge member made of resin so as to straddle the fragile portion. An automotive interior material having an airbag opening, wherein the interior material is fused to the interior material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001123028A JP2002316608A (en) | 2001-04-20 | 2001-04-20 | Method for forming opening part for airbag, and interior trim for car having opening part for airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001123028A JP2002316608A (en) | 2001-04-20 | 2001-04-20 | Method for forming opening part for airbag, and interior trim for car having opening part for airbag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002316608A true JP2002316608A (en) | 2002-10-29 |
Family
ID=18972646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001123028A Pending JP2002316608A (en) | 2001-04-20 | 2001-04-20 | Method for forming opening part for airbag, and interior trim for car having opening part for airbag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002316608A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006289653A (en) * | 2005-04-06 | 2006-10-26 | Sanko Gosei Ltd | Trim cover for car equipped with air bag device |
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| JPH0299324A (en) * | 1988-10-07 | 1990-04-11 | Toyota Motor Corp | Preparation of interior part having air bag lid part |
| EP0771695A1 (en) * | 1995-10-31 | 1997-05-07 | Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH | Interior trim panel |
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| DE19715032A1 (en) * | 1997-04-11 | 1998-10-15 | Opel Adam Ag | Cover for interior of vehicle protecting airbag module provided for occupants |
| EP0949124A2 (en) * | 1998-04-09 | 1999-10-13 | Volkswagen Aktiengesellschaft | Cover for an airbag in a vehicle |
| JPH11320156A (en) * | 1998-05-11 | 1999-11-24 | Ricoh Microelectronics Co Ltd | Method and device for processing by laser |
| JP2000033844A (en) * | 1998-06-25 | 2000-02-02 | Tip Engineering Group Inc | Manufacture of a vehicle trim piece pre-weakened to form airbag deployment opening |
| JP2000135959A (en) * | 1998-08-27 | 2000-05-16 | Kansei Corp | Lid structure of air bag device for vehicle |
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2001
- 2001-04-20 JP JP2001123028A patent/JP2002316608A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62142092A (en) * | 1985-12-17 | 1987-06-25 | Honda Motor Co Ltd | Adhering method for member by laser |
| JPH0299324A (en) * | 1988-10-07 | 1990-04-11 | Toyota Motor Corp | Preparation of interior part having air bag lid part |
| EP0771695A1 (en) * | 1995-10-31 | 1997-05-07 | Deutsche Fibrit Gesellschaft Ebers & Dr. Müller mbH | Interior trim panel |
| JPH09286293A (en) * | 1996-04-19 | 1997-11-04 | Toyota Motor Corp | Instrument panel integrally provided with air bag door part and manufacture thereof |
| DE19715032A1 (en) * | 1997-04-11 | 1998-10-15 | Opel Adam Ag | Cover for interior of vehicle protecting airbag module provided for occupants |
| EP0949124A2 (en) * | 1998-04-09 | 1999-10-13 | Volkswagen Aktiengesellschaft | Cover for an airbag in a vehicle |
| JPH11320156A (en) * | 1998-05-11 | 1999-11-24 | Ricoh Microelectronics Co Ltd | Method and device for processing by laser |
| JP2000033844A (en) * | 1998-06-25 | 2000-02-02 | Tip Engineering Group Inc | Manufacture of a vehicle trim piece pre-weakened to form airbag deployment opening |
| JP2000135959A (en) * | 1998-08-27 | 2000-05-16 | Kansei Corp | Lid structure of air bag device for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006289653A (en) * | 2005-04-06 | 2006-10-26 | Sanko Gosei Ltd | Trim cover for car equipped with air bag device |
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