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JP2004014413A - Outer lens assembly for vehicular lamp - Google Patents

Outer lens assembly for vehicular lamp Download PDF

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Publication number
JP2004014413A
JP2004014413A JP2002169086A JP2002169086A JP2004014413A JP 2004014413 A JP2004014413 A JP 2004014413A JP 2002169086 A JP2002169086 A JP 2002169086A JP 2002169086 A JP2002169086 A JP 2002169086A JP 2004014413 A JP2004014413 A JP 2004014413A
Authority
JP
Japan
Prior art keywords
outer lens
protector
laser
assembly
lens assembly
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.)
Abandoned
Application number
JP2002169086A
Other languages
Japanese (ja)
Inventor
Kenichi Asaka
浅香　賢一
Shoichi Mikawa
箕川　彰一
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.)
Ichikoh Industries Ltd
Original Assignee
Ichikoh Industries Ltd
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.)
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Publication date
Application filed by Ichikoh Industries Ltd filed Critical Ichikoh Industries Ltd
Priority to JP2002169086A priority Critical patent/JP2004014413A/en
Publication of JP2004014413A publication Critical patent/JP2004014413A/en
Abandoned legal-status Critical Current

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    • 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
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • 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
    • B29C65/02—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
    • B29C65/1677—Laser beams making use of an absorber or impact modifier
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • 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
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/65—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles with a relative motion between the article and the welding tool
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
    • B29K2033/04—Polymers of esters
    • B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
    • 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
    • B29K2069/00—Use of PC, i.e. polycarbonates 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
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B29L2011/0016—Lenses
    • 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
    • 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
    • B29L2031/747—Lightning equipment

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reliable fixing form with simple work without degrading an appearance when a protector is fixed in the circumference of an outer lens formed in a three-dimensionally slanting shape. <P>SOLUTION: This outer lens assembly 1 is composed by fixing the protector 3 in the circumference of the outer lens 2 formed in the three-dimensionally slanting shape. The outer lens 2 is formed of a thermoplastic resin material having permeability to a laser beam 6. The protector 3 is formed of a thermoplastic resin material having absorbency to the laser beam 6. The protector 3 is fixed to a rising wall 4 by laser welding (a welding part 7) by the laser beam 6 radiated from the rising wall 4 side of the outer lens 2. The welding part 7 is not exposed to the outside because of being formed between the protector 3 and the rising wall 4. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
この発明は、三次元的にスラントしているアウタレンズの外周にプロテクタを固定してなる車両灯具用アウタレンズアッセンブリに関する。
【０００２】
【従来の技術】
三次元的にスラントしているアウタレンズ２は、車体のデザイン上のコンセプトを合致させるために設計されるもので、例えばヘッドランプの場合、図４（ａ）、（ｂ）に示すように、レンズ２の上下方向、および左右方向の各両端部を車体後方へスラントさせて設計されている。
【０００３】
また、プロテクタ３は、車両灯具の車体への装着時にアウタレンズ２と車体との間をシールする目的で装着されるもので、例えばヘッドランプの場合、図５に示すようにアウタレンズ２の外周に固定されるフードラバーやエンドラバーとして具体化されている。
【０００４】
このプロテクタ３は、アウタレンズ１０の成形時に一体成形することができないので、従来はそれぞれ別個に成形後、両面テープ１０（図６参照）や瞬間接着剤を用いてアウタレンズ２の立壁４の外周面に貼り付けて、車両灯具用アウタレンズアッセンブリ１００として構成されている（図５参照）。
【０００５】
そして、アウタレンズアッセンブリ１００は、図６に示すように、立壁４の先端に延設された固定用リブ５を介してランプハウジング１２の開口部を塞ぐようにして取り付けられ、これにより、ランプハウジング１２と共働して灯室１１を画成する。なお、図６中、符号１３は固定用リブ５を固定するためのホットメルトであり、符号１４はインナパネルであり、符号２０はボンネットである。
【０００６】
【発明が解決しようとする課題】
しかしながら、このように構成されたアウタレンズアッセンブリ１００は、プロテクタ３の固定が、多くの手間が掛かって面倒であるばかりでなく、固定後、熱や振動等で剥がれる虞があって今一信頼性に欠ける、という課題を有している。
【０００７】
すなわち、アウタレンズ２が、三次元的にスラントした形状に形成されているので、固定手段として両面テープ１０を用いたときは両面テープ１０が縒れて立壁４上に沿わなくなる部分が現出し、この現出を防ぐために両面テープ１０を切断して調整することが余儀なくされる等、多くの手間が掛かる。
【０００８】
さらに、瞬間接着剤を用いたものでは、接着剤のはみ出しや白化による外観上の劣化を招く虞があること、および接着剤のはみ出しを防止しようとすればプロテクタ３の端縁部分の接着が不十分になるという課題をも有している。
【０００９】
なお、他に振動溶着、超音波溶着、あるいは熱板溶着等の固定手段があるが、これらはいずれもプロテクタ３の固定には馴染まないものである。
【００１０】
そこで、この発明は、三次元的にスラントした形状に形成されているアウタレンズの外周にプロテクタを固定するに当たって、外観上の劣化を伴うことなく、簡単な作業で信頼性のある固定状態が得られる車両灯具用アウタレンズアッセンブリを提供することを目的としている。
【００１１】
【課題を解決するための手段】
前記した目的を達成するため、請求項１の発明は、三次元的にスラントした形状に形成されているアウタレンズの外周にプロテクタを固定してなる車両灯具用アウタレンズアッセンブリであって、
前記アウタレンズが、レーザ光に対して透過性のある熱可塑性樹脂材で構成されると共に、前記プロテクタが、レーザ光に対して吸収性のある熱可塑性樹脂材で構成されており、かつ前記プロテクタが、前記アウタレンズの立壁側から照射されるレーザ光によるレーザ溶着により前記立壁に固定されていることを特徴とする。
【００１２】
このため請求項１の発明では、アウタレンズはレーザ光に対して透過性のある熱可塑性樹脂材で構成されているので、アウタレンズの立壁側から照射されるレーザ光は立壁を透過してプロテクタに到達する。プロテクタは、レーザ光に対して吸収性のある熱可塑性樹脂材で構成されているので、プロテクタに到達したレーザ光はプロテクタに吸収されて熱に変換され、この熱でプロテクタの照射部位が溶融する。この溶融熱はアウタレンズの立壁にも伝播され、該立壁を同様に溶融させる。しかして、アウタレンズの立壁とプロテクタとは、その溶融部分同士が融合するレーザ溶着により接合される。プロテクタは、このようなレーザ溶着をその全長に亘って施されることによって、アウタレンズの立壁に固定される。
【００１３】
このときの溶着部は、プロテクタと立壁との間に形成されることになるので、アウタレンズの表面方向からの視線に対して隠すことができる。
【００１４】
また、請求項２の発明は、請求項１に記載の車両灯具用アウタレンズアッセンブリであって、
前記立壁は、平滑な内外面を有して前記アウタレンズのレンズ本体部に連続して形成される前記プロテクタのレーザ溶着部分と、このレーザ溶着部分に厚み方向の凹段部を介して幅方向に連続形成され前記凹段部の高さの範囲内でローレット加工が施されているローレット部分とを有して形成されていることを特徴とする。
【００１５】
このため請求項２の発明では、レーザ溶着部分にはローレット加工が施されていないので、該部分に照射されるレーザ光は、乱反射を避けて適度に集光径を絞ることができ、これによりレーザ溶着が可能になる。
【００１６】
また、ローレット部分は、アウタレンズに意匠上の変化を付与することができ、かつ光の乱反射により、内部の光の外方への漏れを防ぐことができると共に外方から内部の透視を難しくしている。
【００１７】
また、ローレット加工は、レーザ溶着部分とローレット部分の境界にある凹段部の高さの範囲内でローレット部分に施すようにしたので、型抜きも容易である。
【００１８】
【発明の実施の形態】
以下、本発明を、実施の形態に基づいて具体的に説明する。なお、図４〜図６に示す部材と同一機能を有する部材は、同一符号を付して説明する。
【００１９】
図１は、本発明の第１実施形態としての車両灯具用アウタレンズアッセンブリ１を示す。このアッセンブリ１は、従来と同様に三次元的にスラントした形状に形成されているアウタレンズ２の外周にプロテクタ３を固定して構成されている。
【００２０】
すなわち、アッセンブリ１は、アウタレンズ２が、レーザ光に対して透過性のある熱可塑性樹脂材で構成されると共に、プロテクタ３が、レーザ光に対して吸収性のある熱可塑性樹脂材で構成されており、かつプロテクタ３が、アウタレンズ２の立壁側から照射されるレーザ光６によるレーザ溶着（溶着部７）により立壁４に固定されて構成されている。
【００２１】
アウタレンズ２は、立壁４の先端に固定用リブ５を延設して構成されており、アッセンブリ１は、従来と同様にこの固定用リブ５を介して図外のランプハウジングの開口部を塞ぐようにして取り付けられ（図６参照）、これにより、ランプハウジングと共働して灯室を画成する。
【００２２】
アウタレンズ２は、素通しレンズであり、アクリル樹脂（ＰＭＭＡ）やポリカーボネート樹脂（ＰＣ）等のレーザ光６に対して透過性を有する熱可塑性樹脂材で形成されている。立壁４および固定用リブ５は、アウタレンズ２の外周縁部の全周に亘って同一樹脂材で一体に形成される。具体的には、アクリル樹脂としては、高耐熱性メタクリル樹脂（商品名、「パラペットＳＨ−Ｎ」（（株）クラレ社製））が選択でき、ポリカーボネート樹脂としては、商品名、「ＬＳ１・２・３」（日本ジーイープラスチック（株）社製）が選択できる。
【００２３】
また、プロテクタ３は、レーザ光６に対して吸収性のある熱可塑性弾性樹脂材で、かつアウタレンズ２の樹脂材（ＰＭＭＡ、ＰＣ等）との相溶性のある樹脂材で形成される。このような樹脂材としては、例えばカーボンブラックで黒色に着色した飽和型熱可塑性エラストマーがあり、具体的には、商品名、タフテックコンパウンドＳシリーズ「Ｓ２９５４」（旭化成工業（株）社製）が選択できる。
【００２４】
また、レーザ光６は、アウタレンズ２の立壁４内の透過率が所定値以上となるような波長を有するものが適宜選択される。このようなレーザ光６として、半導体レーザ（波長８０８ｎｍ、または９４０ｎｍ）がある。
【００２５】
さらに、レーザ溶着は、図１に示すように、プロテクタ３を立壁４の外側面に沿わせてセットした後、適宜の固定治具（図示せず）を用いてプロテクタ３と立壁４の双方を相互に加圧しながら密着させ、この密着状態を保って、立壁４の内側面側からレーザ光６を照射することにより行われる。このときのレーザ光６は、例えば集光径ｒを１．０〜３．０ｍｍの範囲内に設定して行う。このレーザ溶着は、アウタレンズ２（およびプロテクタ３）とレーザ射出部８のいずれか一方を固定させて他方を移動させるか、あるいは両方を適宜移動させてプロテクタ３の全長に亘って行われる。
【００２６】
このレーザ溶着においては、立壁４は、レーザ光６に対して透過性を有する熱可塑性樹脂材で構成されているので、立壁４の内側面側から照射されるレーザ光６は、立壁４を透過してプロテクタ３に到達する。プロテクタ３は、レーザ光６に対して吸収性のある熱可塑性樹脂材で構成されているので、プロテクタ３に到達したレーザ光６はプロテクタ３に吸収されて熱に変換され、この熱でプロテクタ３の照射部位を溶融させる。この溶融熱はアウタレンズ２の立壁４側にも伝播され、立壁４を同様に溶融させる。しかして、プロテクタ３と立壁４の外周面は、その溶融部同士が融合するレーザ溶着により接合され、この接合により、アッセンブリ１を得ることができる。
【００２７】
このようにして構成されたアッセンブリ１は、アウタレンズ２が三次元的にスラントした形状に形成されているにも拘わらず、格別の高精度制御を要することのない簡単なレーザ溶着によりプロテクタ３のアウタレンズ２への固定を確実に行うことができる。プロテクタ３の端縁部分の固定も、外観上の劣化を伴うことなく確実に行うことができる。
【００２８】
また、アッセンブリ１は、溶着部７が、プロテクタ３と立壁４との間に形成されることになるので、アウタレンズ２の表面方向からの視線に対して隠すことができるので、溶着部７の外部露出に起因する外観上の品質低下も無い。その上、溶着部７は、樹脂材の溶融部分同士の融合により構成されるので、時系列的な劣化も生じない。
【００２９】
さらには、レーザ溶着は、両面テープ（図６の両面テープ１０）との比較において次のような有意な作用効果を奏することができる。
【００３０】
すなわち、接着手段としての両面テープは、５〜１０ｍｍのテープ幅（糊代に相当する）と、大きな厚みとを有して形成されている。
【００３１】
これに対してレーザ溶着は、レーザ光の集光径（糊代に相当する）が１〜３ｍｍで、両面テープに比べると、小さな糊代で満足することができるので、その分立壁４の幅を小さくすることができ、ひいてはアッセンブリ１の小型化およびコストメリットを引き出すことができる。
【００３２】
また、レーザ溶着は、溶着部７に接着手段としての厚みを付加することがないので、立壁４（あるいはプロテクタ３）に接着手段の厚みを逃がす加工（例えば、接着手段の厚みに相当する段部加工）が不要で、前記加工を必要とする両面テープに比べると、加工が容易で、その分アッセンブリ１のコストメリットを引き出すことができる。
【００３３】
図２は、本発明の第２実施形態としての車両灯具用アウタレンズアッセンブリ１５を示し、図３は、アッセンブリ１５を構成するアウタレンズ２を示す。このアッセンブリ１５は、立壁４の構成が相違するだけで、他の構成はアッセンブリ１と同様に構成されている。このため以下の説明においては、アッセンブリ１と同様の構成要素については同一符号を付してその説明を省略する。
【００３４】
すなわち、アッセンブリ１５における立壁４は、平滑な内外面を有してアウタレンズ２のレンズ本体部１６に連続して形成されるプロテクタ３のレーザ溶着部分１３と、このレーザ溶着部分１３に厚み方向の凹段部１７を介して幅方向に連続形成され凹段部１７の高さの範囲内でローレット加工１８が施されているローレット部分１４とを有して形成されている。
【００３５】
本実施形態ではローレット加工１８は、立壁４の内面に施されている。プロテクタ３は、溶着部７を介して立壁４のレーザ溶着部分１３に固定されている。固定用リブ５は、ローレット部分１４の先端に延設されている。
【００３６】
このように構成されたアッセンブリ１５によれば、レーザ溶着部分１３にはローレット加工が施されていないので、該部分１３に照射されるレーザ光６は、乱反射を避けて適度に集光径を絞ることができ、これによりレーザ溶着が可能になる。このためアッセンブリ１５は、前述したアッセンブリ１と同様な作用効果を奏することができることは勿論のことである。
【００３７】
また、ローレット部分１４は、アウタレンズ２に意匠上の変化を付与することができ、かつ光の乱反射により、内部の光の外方への漏れを防ぐことができると共に外方から内部の透視を難しくしており、総じて外観上の品質向上が図れる。
【００３８】
また、ローレット加工１８は、レーザ溶着部分１３とローレット部分１４の境界にある凹段部１７の高さの範囲内でローレット部分１４に施すようにしたので、型抜きも容易であり、ひいては型設計も容易で型コストを抑制することができる。
【００３９】
また、本発明のレーザ光６の走査方法は、レーザ光６の集光部を直線的に移動させる直線走査や、前記集光部をジグザグ状に移動させるジグザグ走査のいずれをも用いうるものである。
【００４０】
【発明の効果】
以上詳細に説明したように本発明によれば次の効果を奏することができる。
【００４１】
すなわち、請求項１の発明によれば、三次元的にスラントした形状に形成されているアウタレンズの外周へのプロテクタの固定を、格別の高精度制御を要することのない簡単なレーザ溶着により確実に行うことができると共に、その溶着部を外方に露出させることがないので外観上の劣化を伴うこともない。
【００４２】
また、請求項２の発明によれば、レーザ溶着部分にはローレット加工が施されていないので、該部分に照射されるレーザ光は、乱反射を避けて適度に集光径を絞ることができ、これによりレーザ溶着が可能になって請求項１の発明と同様の効果を奏することができる。
【００４３】
その上、請求項２の発明によれば、ローレット部分は、アウタレンズに意匠上の変化を付与することができ、かつ光の乱反射により、内部の光の外方への漏れを防ぐことができると共に外方から内部の透視を難しくしており、総じて外観上の品質向上が図れる。
【００４４】
さらに、請求項２の発明によれば、ローレット加工は、レーザ溶着部分とローレット部分の境界にある凹段部の高さの範囲内でローレット部分に施すようにしたので、型抜きも容易であり、ひいては型設計も容易で型コストを抑制することができる。
【図面の簡単な説明】
【図１】本発明の第１実施形態としての車両灯具用アウタレンズアッセンブリのレーザ溶着状態を示す部分断面図である。
【図２】本発明の第２実施形態としての車両灯具用アウタレンズアッセンブリのレーザ溶着状態を示す部分断面図である。
【図３】第２実施形態の車両灯具用アウタレンズアッセンブリを構成するアウタレンズの部分側面図である。
【図４】（ａ），（ｂ）は、三次元的にスラントした形状に形成されている一般的なアウタレンズを示す斜視図である。
【図５】従来の車両灯具用アウタレンズアッセンブリの斜視図である。
【図６】従来の車両灯具用アウタレンズアッセンブリの車体への組付状態を示す概略断面図である。
【符号の説明】
１，１５　アッセンブリ（車両灯具用アウタレンズアッセンブリ）
２　アウタレンズ
３　プロテクタ
４　立壁
６　レーザ光
７　溶着部（レーザ溶着による）
１３　レーザ溶着部分
１４　ローレット部分
１６　レンズ本体部
１７　凹段部
１８　ローレット加工[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an outer lens assembly for a vehicle lamp in which a protector is fixed to an outer periphery of a three-dimensionally slanted outer lens.
[0002]
[Prior art]
The outer lens 2 which is three-dimensionally slanted is designed to match the concept of the design of the vehicle body. For example, in the case of a headlamp, as shown in FIGS. 2 are designed such that both ends in the vertical and horizontal directions are slanted toward the rear of the vehicle body.
[0003]
The protector 3 is mounted for the purpose of sealing between the outer lens 2 and the vehicle body when the vehicle lamp is mounted on the vehicle body. For example, in the case of a headlamp, the protector 3 is fixed to the outer periphery of the outer lens 2 as shown in FIG. It is embodied as a food rubber or end rubber.
[0004]
Since the protector 3 cannot be integrally molded when the outer lens 10 is molded, conventionally, the protector 3 is separately molded and then formed on the outer peripheral surface of the upright wall 4 of the outer lens 2 by using a double-sided tape 10 (see FIG. 6) or an instant adhesive. It is configured as an outer lens assembly 100 for a vehicle lamp by being attached (see FIG. 5).
[0005]
As shown in FIG. 6, the outer lens assembly 100 is attached so as to close the opening of the lamp housing 12 via the fixing rib 5 extending at the tip of the upright wall 4, whereby the lamp housing The lamp room 11 is defined in cooperation with the lamp room 12. In FIG. 6, reference numeral 13 denotes a hot melt for fixing the fixing rib 5, reference numeral 14 denotes an inner panel, and reference numeral 20 denotes a hood.
[0006]
[Problems to be solved by the invention]
However, in the outer lens assembly 100 configured as described above, the fixing of the protector 3 is not only troublesome because it takes a lot of trouble but also there is a possibility that the protector 3 may be peeled off due to heat or vibration after the fixing. Is lacking.
[0007]
That is, since the outer lens 2 is formed in a three-dimensionally slanted shape, when the double-sided tape 10 is used as a fixing means, a portion where the double-sided tape 10 is twisted and does not follow the standing wall 4 appears. A lot of trouble is required, for example, it is necessary to cut and adjust the double-sided tape 10 in order to prevent the appearance.
[0008]
Further, in the case of using the instant adhesive, there is a risk that the adhesive may protrude or deteriorate due to whitening, and if the adhesive is prevented from protruding, the edge of the protector 3 may not be adhered. It also has the problem of becoming sufficient.
[0009]
In addition, there are other fixing means such as vibration welding, ultrasonic welding, and hot plate welding, all of which are not adapted to fixing the protector 3.
[0010]
Therefore, according to the present invention, in fixing the protector to the outer periphery of the outer lens formed in a three-dimensionally slanted shape, a reliable fixing state can be obtained by a simple operation without deterioration in appearance. It is an object of the present invention to provide an outer lens assembly for a vehicle lamp.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is an outer lens assembly for a vehicle lamp, in which a protector is fixed to an outer periphery of an outer lens formed in a three-dimensionally slanted shape,
The outer lens is made of a thermoplastic resin material that transmits laser light, and the protector is made of a thermoplastic resin material that absorbs laser light, and the protector is The outer lens is fixed to the upright wall by laser welding using laser light emitted from the upright wall side of the outer lens.
[0012]
Therefore, according to the first aspect of the invention, since the outer lens is made of a thermoplastic resin material that is transparent to the laser light, the laser light emitted from the upright wall side of the outer lens passes through the upright wall and reaches the protector. I do. Since the protector is made of a thermoplastic resin material that absorbs laser light, the laser light that reaches the protector is absorbed by the protector and converted into heat, and the heat melts the irradiated portion of the protector. . This heat of fusion is also transmitted to the upright wall of the outer lens, causing the upright wall to melt as well. Thus, the standing wall of the outer lens and the protector are joined by laser welding in which the fused portions are fused. The protector is fixed to the upright wall of the outer lens by performing such laser welding over its entire length.
[0013]
Since the welded portion at this time is formed between the protector and the upright wall, it can be hidden from the line of sight of the outer lens from the surface direction.
[0014]
According to a second aspect of the present invention, there is provided an outer lens assembly for a vehicle lamp according to the first aspect,
The upright wall has a smooth inner and outer surface and is formed continuously with the lens body of the outer lens in a laser welded portion of the protector. And a knurled portion that is continuously formed and knurled within the range of the height of the concave step portion.
[0015]
For this reason, in the invention of claim 2, since the knurling process is not performed on the laser-welded portion, the laser beam irradiated on the portion can appropriately narrow the condensing diameter while avoiding irregular reflection. Laser welding becomes possible.
[0016]
In addition, the knurled portion can impart a design change to the outer lens, and can prevent internal light from leaking outward due to irregular reflection of light and make it difficult to see through the interior from the outside. I have.
[0017]
Further, the knurling is performed on the knurled portion within the range of the height of the concave step portion at the boundary between the laser welded portion and the knurled portion, so that the die can be easily removed.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be specifically described based on embodiments. Members having the same functions as those shown in FIGS. 4 to 6 will be described with the same reference numerals.
[0019]
FIG. 1 shows an outer lens assembly 1 for a vehicle lamp as a first embodiment of the present invention. This assembly 1 is configured by fixing a protector 3 to the outer periphery of an outer lens 2 formed in a three-dimensional slanted shape as in the related art.
[0020]
That is, in the assembly 1, the outer lens 2 is made of a thermoplastic resin material that transmits laser light, and the protector 3 is made of a thermoplastic resin material that absorbs laser light. In addition, the protector 3 is configured to be fixed to the upright wall 4 by laser welding (welding portion 7) using laser light 6 emitted from the upright wall side of the outer lens 2.
[0021]
The outer lens 2 is configured by extending a fixing rib 5 at the tip of the standing wall 4, and the assembly 1 closes an opening of a lamp housing (not shown) through the fixing rib 5 as in the related art. (See FIG. 6), which cooperates with the lamp housing to define a lamp chamber.
[0022]
The outer lens 2 is a transparent lens, and is formed of a thermoplastic resin material such as an acrylic resin (PMMA) or a polycarbonate resin (PC) that is transparent to a laser beam 6. The upright wall 4 and the fixing rib 5 are integrally formed of the same resin material over the entire outer peripheral edge of the outer lens 2. Specifically, as the acrylic resin, a high heat-resistant methacrylic resin (trade name, “Parapet SH-N” (manufactured by Kuraray Co., Ltd.)) can be selected, and as the polycarbonate resin, the trade name, “LS1.2”・ 3 "(manufactured by Nippon GE Plastics Co., Ltd.).
[0023]
The protector 3 is formed of a thermoplastic elastic resin material that absorbs the laser light 6 and a resin material that is compatible with the resin material (PMMA, PC, or the like) of the outer lens 2. As such a resin material, there is, for example, a saturated thermoplastic elastomer colored black with carbon black, and specifically, a trade name, Tuftec Compound S series “S2954” (manufactured by Asahi Kasei Kogyo Co., Ltd.) is selected. it can.
[0024]
The laser beam 6 having a wavelength such that the transmittance in the standing wall 4 of the outer lens 2 is equal to or more than a predetermined value is appropriately selected. As such a laser beam 6, there is a semiconductor laser (wavelength 808 nm or 940 nm).
[0025]
In laser welding, as shown in FIG. 1, after setting the protector 3 along the outer surface of the standing wall 4, both the protector 3 and the standing wall 4 are fixed using an appropriate fixing jig (not shown). The laser beam 6 is irradiated from the inner side of the upright wall 4 while maintaining the close contact while pressing each other. The laser beam 6 at this time is set, for example, with the condensing diameter r set in the range of 1.0 to 3.0 mm. This laser welding is performed over the entire length of the protector 3 by fixing one of the outer lens 2 (and the protector 3) and the laser emitting unit 8 and moving the other, or moving both appropriately.
[0026]
In this laser welding, since the standing wall 4 is made of a thermoplastic resin material having transparency to the laser beam 6, the laser beam 6 emitted from the inner side of the standing wall 4 transmits through the standing wall 4. And reaches the protector 3. Since the protector 3 is made of a thermoplastic resin material that absorbs the laser light 6, the laser light 6 that reaches the protector 3 is absorbed by the protector 3 and converted into heat. Is irradiated. This heat of fusion is also propagated to the standing wall 4 side of the outer lens 2 to melt the standing wall 4 similarly. Thus, the outer peripheral surfaces of the protector 3 and the standing wall 4 are joined by laser welding in which the fused portions are fused, and the assembly 1 can be obtained by this joining.
[0027]
The assembly 1 configured as described above has the outer lens 2 of the protector 3 formed by simple laser welding that does not require special high-precision control, although the outer lens 2 is formed in a three-dimensional slanted shape. 2 can be securely fixed. The fixing of the edge portion of the protector 3 can also be reliably performed without deterioration in appearance.
[0028]
In addition, since the welding portion 7 is formed between the protector 3 and the upright wall 4 in the assembly 1, the assembly 1 can be hidden from the line of sight from the surface direction of the outer lens 2. There is no deterioration in appearance quality due to exposure. In addition, since the welded portion 7 is formed by fusing the melted portions of the resin material, no time-series deterioration occurs.
[0029]
Further, the laser welding has the following significant operational effects as compared with the double-sided tape (double-sided tape 10 in FIG. 6).
[0030]
That is, the double-sided tape as the bonding means is formed to have a tape width of 5 to 10 mm (corresponding to a glue allowance) and a large thickness.
[0031]
On the other hand, laser welding has a laser beam focusing diameter (corresponding to a glue allowance) of 1 to 3 mm and can be satisfied with a small glue allowance as compared with a double-sided tape. Can be reduced, and the size and cost of the assembly 1 can be reduced.
[0032]
Further, since the laser welding does not add a thickness as a bonding means to the welding portion 7, a process of releasing the thickness of the bonding means to the standing wall 4 (or the protector 3) (for example, a step portion corresponding to the thickness of the bonding means). Processing) is unnecessary, and the processing is easier than a double-sided tape that requires the processing, and the cost advantage of the assembly 1 can be brought out accordingly.
[0033]
FIG. 2 shows an outer lens assembly 15 for a vehicle lamp as a second embodiment of the present invention, and FIG. 3 shows the outer lens 2 constituting the assembly 15. This assembly 15 has the same configuration as the assembly 1 except for the configuration of the upright wall 4. Therefore, in the following description, the same components as those of the assembly 1 are denoted by the same reference numerals, and the description thereof will be omitted.
[0034]
That is, the upright wall 4 of the assembly 15 has a smooth inner and outer surface and is formed continuously with the lens body 16 of the outer lens 2, and the laser welded portion 13 of the protector 3 has a concave portion in the thickness direction. The knurled portion 14 is formed continuously in the width direction via the stepped portion 17 and has a knurled portion 18 within the range of the height of the concave stepped portion 17.
[0035]
In the present embodiment, the knurl processing 18 is performed on the inner surface of the upright wall 4. The protector 3 is fixed to the laser welding portion 13 of the upright wall 4 via the welding portion 7. The fixing rib 5 extends at the tip of the knurl portion 14.
[0036]
According to the assembly 15 configured as described above, since the knurling is not performed on the laser welded portion 13, the laser beam 6 applied to the portion 13 appropriately narrows the condensing diameter while avoiding irregular reflection. This allows laser welding. Therefore, the assembly 15 can, of course, provide the same operation and effect as the above-described assembly 1.
[0037]
Further, the knurled portion 14 can impart a design change to the outer lens 2 and can prevent internal light from leaking outward due to irregular reflection of light, and make it difficult to see through the interior from the outside. As a result, the quality of appearance can be generally improved.
[0038]
In addition, the knurling 18 is performed on the knurled portion 14 within the range of the height of the concave step portion 17 at the boundary between the laser welded portion 13 and the knurled portion 14, so that the die can be easily cut out and, consequently, the die design. Also, the mold cost can be reduced easily.
[0039]
Further, the scanning method of the laser beam 6 of the present invention can use any of a linear scan for linearly moving the condensing portion of the laser beam 6 and a zigzag scanning for moving the condensing portion in a zigzag shape. is there.
[0040]
【The invention's effect】
As described in detail above, according to the present invention, the following effects can be obtained.
[0041]
That is, according to the first aspect of the invention, the protector is securely fixed to the outer periphery of the outer lens formed in a three-dimensionally slanted shape by simple laser welding without requiring special high precision control. It can be performed, and the welded portion is not exposed to the outside, so that there is no deterioration in appearance.
[0042]
According to the second aspect of the present invention, since the knurling process is not performed on the laser-welded portion, the laser beam applied to the portion can appropriately narrow the focusing diameter while avoiding irregular reflection, Thereby, laser welding becomes possible, and the same effect as the first aspect of the invention can be obtained.
[0043]
In addition, according to the invention of claim 2, the knurl portion can impart a design change to the outer lens, and can prevent internal light from leaking outward due to irregular reflection of light. It is difficult to see through the inside from the outside, so that the overall appearance can be improved.
[0044]
Furthermore, according to the invention of claim 2, the knurling is performed on the knurled portion within the range of the height of the concave step portion at the boundary between the laser welded portion and the knurled portion, so that the die can be easily removed. In addition, the mold design is easy and the mold cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a partial sectional view showing a laser-welded state of an outer lens assembly for a vehicle lamp as a first embodiment of the present invention.
FIG. 2 is a partial sectional view showing a laser-welded state of an outer lens assembly for a vehicle lamp according to a second embodiment of the present invention.
FIG. 3 is a partial side view of an outer lens constituting an outer lens assembly for a vehicle lamp according to a second embodiment.
FIGS. 4A and 4B are perspective views showing a general outer lens formed in a three-dimensionally slanted shape.
FIG. 5 is a perspective view of a conventional outer lens assembly for a vehicle lamp.
FIG. 6 is a schematic cross-sectional view showing a state in which a conventional outer lens assembly for a vehicle lamp is assembled to a vehicle body.
[Explanation of symbols]
1,15 assembly (outer lens assembly for vehicle lighting)
2 Outer lens 3 Protector 4 Standing wall 6 Laser beam 7 Welded part (by laser welding)
13 laser welding part 14 knurl part 16 lens body part 17 concave step part 18 knurl processing

Claims (2)

三次元的にスラントした形状に形成されているアウタレンズの外周にプロテクタを固定してなる車両灯具用アウタレンズアッセンブリであって、
前記アウタレンズが、レーザ光に対して透過性のある熱可塑性樹脂材で構成されると共に、前記プロテクタが、レーザ光に対して吸収性のある熱可塑性樹脂材で構成されており、かつ前記プロテクタが、前記アウタレンズの立壁側から照射されるレーザ光によるレーザ溶着により前記立壁に固定されていることを特徴とする車両灯具用アウタレンズアッセンブリ。An outer lens assembly for a vehicle lamp in which a protector is fixed to an outer periphery of an outer lens formed in a three-dimensional slanted shape,
The outer lens is made of a thermoplastic resin material that transmits laser light, and the protector is made of a thermoplastic resin material that absorbs laser light, and the protector is An outer lens assembly for a vehicle lamp, wherein the outer lens is fixed to the upright wall by laser welding using laser light emitted from the upright wall side of the outer lens. 請求項１に記載の車両灯具用アウタレンズアッセンブリであって、
前記立壁は、平滑な内外面を有して前記アウタレンズのレンズ本体部に連続して形成される前記プロテクタのレーザ溶着部分と、このレーザ溶着部分に厚み方向の凹段部を介して幅方向に連続形成され前記凹段部の高さの範囲内でローレット加工が施されているローレット部分とを有して形成されていることを特徴とする車両灯具用アウタレンズアッセンブリ。An outer lens assembly for a vehicle lighting device according to claim 1,
The upright wall has a smooth inner and outer surface and is formed continuously with the lens body of the outer lens in a laser welded portion of the protector. An outer lens assembly for a vehicle lamp, comprising: a knurled portion formed continuously and knurled within a range of the height of the concave step portion.
JP2002169086A 2002-06-10 2002-06-10 Outer lens assembly for vehicular lamp Abandoned JP2004014413A (en)

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Application Number Priority Date Filing Date Title
JP2002169086A JP2004014413A (en) 2002-06-10 2002-06-10 Outer lens assembly for vehicular lamp

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006079933A (en) * 2004-09-09 2006-03-23 Koito Mfg Co Ltd Vehicular lamp and manufacturing method of vehicular lamp
JP2013101865A (en) * 2011-11-09 2013-05-23 Koito Mfg Co Ltd Laser welding structure
US8506872B2 (en) 2009-05-29 2013-08-13 Stanley Electric Co., Ltd. Method for manufacturing resin mold assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006079933A (en) * 2004-09-09 2006-03-23 Koito Mfg Co Ltd Vehicular lamp and manufacturing method of vehicular lamp
US8506872B2 (en) 2009-05-29 2013-08-13 Stanley Electric Co., Ltd. Method for manufacturing resin mold assembly
JP2013101865A (en) * 2011-11-09 2013-05-23 Koito Mfg Co Ltd Laser welding structure

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