JP4493577B2 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
JP4493577B2
JP4493577B2 JP2005296401A JP2005296401A JP4493577B2 JP 4493577 B2 JP4493577 B2 JP 4493577B2 JP 2005296401 A JP2005296401 A JP 2005296401A JP 2005296401 A JP2005296401 A JP 2005296401A JP 4493577 B2 JP4493577 B2 JP 4493577B2
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Prior art keywords
boundary line
different
joint
row
welding surface
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Japanese (ja)
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JP2007109429A (en
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彰則 山本
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Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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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
    • 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
    • B29C66/305—Decorative or coloured 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
    • 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
    • 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
    • B29C65/78—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
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • 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
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1282—Stepped joint cross-sections comprising at least one overlap joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B29C66/1284—Stepped joint cross-sections comprising at least one butt joint-segment
    • B29C66/12841—Stepped joint cross-sections comprising at least one butt joint-segment comprising at least two butt joint-segments
    • 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
    • B29C66/14—Particular design of joint configurations particular design of the joint cross-sections the joint having the same thickness as the thickness 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
    • 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
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/733—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence
    • B29C66/7332—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured
    • B29C66/73321—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured both parts to be joined being coloured
    • B29C66/73322—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 optical properties of the material of the parts to be joined, e.g. fluorescence, phosphorescence at least one of the parts to be joined being coloured both parts to be joined being coloured both parts to be joined having a different colour
    • 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
    • B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
    • B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
    • 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
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • 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)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Optics & Photonics (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology for sure welding of a translucent cover with different-color parts integrally molded to a housing. <P>SOLUTION: The tool is provided with a translucent cover 30 and a housing 20 welded together by the irradiation of beams, such as laser. The translucent cover has parts made of resin materials of a plurality of different colors (hereafter, to be called "different-color parts") 31, 32 integrally molded; and moreover, a boundary line 33 of a joint part of the different-color parts reaches a side end face 30a of the translucent cover, while the translucent cover is provided with a welded face 34 extended in a closed contour, the jointing part of the different-color parts has the so-called "rubbed joint area" 35, and the so-called "notched joint area" 36 in which the rear-face side of one different-color part is peeled off, and the surface-side part of another different-color part is scraped off to be jointed; and a boundary line 33r appearing on the welded face of the potato-peeled jointing part and a boundary line appearing on a welded face of the notch-peeled joint part are shifted in a direction crossing the width direction of the welded face. <P>COPYRIGHT: (C)2007,JPO&amp;INPIT

Description

本発明は新規な車輌灯具に関する。詳しくは、レーザ等の光線の照射によって互いに溶着される透明カバーとハウジングを備えた車輌用灯具において、複数の異なる色の樹脂材料から成る部分（以下、「異色部分」という）が一体に成形されて成る透明カバーとハウジングとの溶着を確実に為す技術に関する。   The present invention relates to a novel vehicle lamp. Specifically, in a vehicular lamp having a transparent cover and a housing that are welded to each other by irradiation with a light beam such as a laser, a plurality of portions made of resin materials of different colors (hereinafter referred to as “different color portions”) are integrally formed. It is related with the technique of ensuring welding of the transparent cover and housing which consist of.

車輌用灯具において、ハウジングの前面を覆う透明カバーをハウジングにレーザ等の光線を照射して溶着する技術がある。光線溶着によるハウジングと透明カバーとの接合には他の接合技術にはない数々の利点がある。   In a vehicular lamp, there is a technique in which a transparent cover that covers the front surface of a housing is welded by irradiating the housing with a light beam such as a laser. There are a number of advantages of joining the housing and the transparent cover by beam welding that are not available in other joining techniques.

一方、車輌用灯具の透明カバーには、いわゆる多色レンズと称され、複数の色のレンズ、例えば、無色透明レンズと赤色透明レンズとが一体化されたものがある。上記した多色レンズは、一般に、インサート成形又は多色成形（金型の回転、金型のコア金型のスライド等）によって成形される。   On the other hand, a transparent cover of a vehicular lamp is referred to as a so-called multicolor lens, and there is a lens in which a plurality of color lenses, for example, a colorless transparent lens and a red transparent lens are integrated. The above-mentioned multicolor lens is generally molded by insert molding or multicolor molding (mold rotation, mold core mold slide, etc.).

ところで、上記した多色レンズにあっては、異色部分、すなわち、互いに異なる色の樹脂材料から成る部分の境界の表面で僅かに収縮を起こして微少な隙間が生じてしまう。勿論、金型上では異色部分の境界も平坦になるように形成されているが、射出成型時の保圧が十分に行き届かずに収縮してしまうことがある。   By the way, in the above-described multicolor lens, slight shrinkage occurs at the surface of the boundary between the different color portions, that is, the portions made of resin materials of different colors, and a minute gap is generated. Of course, on the mold, the boundary of the different color portion is formed so as to be flat, but the holding pressure at the time of injection molding may not sufficiently reach and may shrink.

上記した表面に連続していない部分があるレンズをレーザ溶着などの光線溶着によってハウジングに接合すると、レンズの溶着面とハウジングとの間に隙間が生じてしまい、レーザ等の光線が照射されても、ハウジングの熱がレンズに伝わらず、十分な溶着が為されない恐れがある。また、照射された光線がレンズの表面側の隙間が生じている境界線で乱屈折して、溶着面側の境界線部分に十分な光線照射量が得られず、これによっても十分な溶着が為されなくなる。   When a lens having a non-continuous portion on the surface described above is joined to the housing by light beam welding such as laser welding, a gap is formed between the lens welding surface and the housing. The heat of the housing is not transmitted to the lens, and there is a possibility that sufficient welding is not performed. In addition, the irradiated light is irregularly refracted at the boundary line where the gap on the surface side of the lens is generated, and a sufficient amount of light irradiation cannot be obtained at the boundary line part on the welding surface side. It will not be done.

レンズ（透明カバー）とハウジングとの間に上記したような溶着が不十分な箇所があると、当該部分での防水性が阻害され、車輌用灯具として十分に機能し得なくなる恐れがある。   If there is a portion where the above-described welding is insufficient between the lens (transparent cover) and the housing, the waterproof property at that portion may be hindered and the vehicle lamp may not function sufficiently.

そこで、本発明は、異色部分が一体に成形されて成る透明カバーとハウジングとの溶着を確実に為すことを課題とする。   Accordingly, an object of the present invention is to reliably weld a transparent cover formed by integrally forming different color portions and a housing.

本発明車輌用灯具は、上記した課題を解決するために、一体に接合された異色部分の境界線が側端面にまで達している透明カバーに所定の幅をもってハウジングと接触すると共に閉曲線状に延びる溶着面を形成し、上記異色部分の接合部のうち上記溶着面に対応した部分において、２つの異色部分が単に突き合わせられて接合されるいわゆる芋矧ぎ状接合領域と一方の異色部分の背面側部分が削り取られると共に他方の異色部分の表面側部分が削り取られた形状で接合されるいわゆる欠き矧ぎ状接合領域とを有し、上記芋矧ぎ状接合部分の溶着面に表れる境界線と上記欠き矧ぎ状接合部分の溶着面に表れる境界線とが溶着面の幅方向に交差する方向にずらされて位置するようにしたものである。   In order to solve the above-described problems, the vehicular lamp of the present invention is in contact with the housing with a predetermined width on the transparent cover in which the boundary line of the differently joined parts reaching the side end surface extends in a closed curve shape. A so-called row-shaped joint region in which two different color portions are simply abutted and joined in a portion corresponding to the weld surface among the joint portions of the different color portions, forming a weld surface, and the back side of one of the different color portions A part that is scraped off and a surface side part of the other different color part is joined in a shape that is scraped off, and a boundary line that appears on the welding surface of the rowed joint part and the above The boundary line appearing on the welded surface of the notched joint portion is shifted in a direction intersecting the width direction of the welded surface.

従って、本発明車輌用灯具にあっては、芋矧ぎ状接合領域の溶着面に表れる境界線と欠き矧ぎ状接合領域の溶着面に表れる境界線とが溶着面の幅方向に交差する方向にずらされて位置する。   Therefore, in the vehicular lamp of the present invention, the boundary line appearing on the welding surface of the row-like joint region and the boundary line appearing on the welding surface of the notch-like joining region intersect the width direction of the welding surface. The position is shifted.

本発明車輌用灯具は、レーザ等の光線の照射によって互いに溶着される透明カバーとハウジングを備えた車輌用灯具であって、上記透明カバーは複数の異なる色の樹脂材料から成る部分（以下、「異色部分」という）が一体に成形されて成ると共に、上記異色部分の接合部の境界線が透明カバーの側端面にまで達しており、上記透明カバーは所定の幅をもってハウジングと接触すると共に閉曲線状に延びる溶着面を備えており、上記異色部分の接合部のうち上記溶着面に対応した部分において、２つの異色部分が単に突き合わせられて接合されるいわゆる芋矧ぎ状接合領域と一方の異色部分の背面側部分が削り取られると共に他方の異色部分の表面側部分が削り取られた形状で接合されるいわゆる欠き矧ぎ状接合領域とを有し、上記芋矧ぎ状接合部分の溶着面に表れる境界線と上記欠き矧ぎ状接合部分の溶着面に表れる境界線とが溶着面の幅方向に交差する方向にずらされて位置することを特徴とする。   The vehicular lamp according to the present invention is a vehicular lamp that includes a transparent cover and a housing that are welded to each other by irradiation of a light beam such as a laser, and the transparent cover is a portion made of a plurality of resin materials of different colors (hereinafter, “ The different color part ") is integrally molded, and the boundary line of the joint part of the different color part reaches the side end surface of the transparent cover, and the transparent cover contacts the housing with a predetermined width and has a closed curve shape. A so-called row-shaped joint region and one different-colored portion in which two different-colored portions are simply abutted and joined in a portion corresponding to the welded surface of the joint portion of the different-colored portion. And the so-called notched row-like joining region joined in a shape in which the back side portion of the other colored portion is scraped off and the surface side portion of the other different color portion is scraped off. And border appearing in welding surface of the border and the lack rebate-shaped joint portion appearing in the welding surface of the coupling portion is being located is offset in a direction crossing the width direction of the weld surface.

従って、本発明車輌用灯具にあっては、芋矧ぎ状接合部分の溶着面に表れる境界線と欠き矧ぎ状接合部分の溶着面に表れる境界線とが溶着面の幅方向に交差する方向にずらされて位置するので、仮に、それぞれの境界線が位置した箇所において溶着が不十分になっても、該溶着不十分な箇所が灯具の外側から内側へと一直線に伸びることがないので、異色部分間の境界線が位置した箇所における防水性が損なわれることがない。   Therefore, in the vehicular lamp according to the present invention, the boundary line appearing on the welding surface of the row-like joint portion and the boundary line appearing on the welding surface of the notch-like joint portion intersect the width direction of the welding surface. Therefore, even if welding is insufficient at the location where each boundary line is located, the insufficiently welded portion does not extend straight from the outside to the inside of the lamp. The waterproofness at the location where the boundary line between the different color portions is located is not impaired.

請求項２に記載した発明にあっては、上記芋矧ぎ状接合領域の表面に現れる境界線と上記欠き矧ぎ状接合領域の表面に現れる境界線とは連続した１本線として現れるので、欠き矧ぎ状接合領域において、表面に表れる境界線と溶着面に表れる境界線とが溶着面の幅方向に交差する方向にずれて位置するため、それぞれの境界線部における光線の乱屈折や散乱の程度が緩和され、溶着が不十分になる可能性が低減する。また、透明カバーの見栄えが損なわれることもない。   In the invention described in claim 2, the boundary line appearing on the surface of the row-like joint region and the boundary line appearing on the surface of the chip-like joint region appear as a continuous single line. In the row joint region, the boundary line appearing on the surface and the boundary line appearing on the welding surface are shifted in the direction intersecting the width direction of the welding surface, so that the refraction and scattering of light rays at each boundary line part The degree is relaxed and the possibility of poor welding is reduced. In addition, the appearance of the transparent cover is not impaired.

請求項３に記載した発明にあっては、上記欠き矧ぎ状接合領域において２つの異色部分においてそれぞれ削り取られる部分の上記溶着面の幅方向に交差する方向の長さは２ｍｍ以上あるので、欠き矧ぎ状接合領域において表面に表れる境界線と溶着面に表れる境界線とが十分に離間して位置するため、溶着の確実性が高まり、灯具内部の十分な密封性を得られる。   In the invention described in claim 3, the length in the direction intersecting the width direction of the welded surface of each of the two differently colored portions in the notched joining region is 2 mm or more. Since the boundary line appearing on the surface and the boundary line appearing on the welding surface are positioned sufficiently apart from each other in the row joint region, the certainty of welding is enhanced and sufficient sealing performance inside the lamp can be obtained.

請求項４に記載した発明にあっては、上記芋矧ぎ状接合領域と上記欠き矧ぎ状接合領域との境界は上記溶着面の幅方向のほぼ中央に位置しているので、溶着の確実性が高まり、灯具内部の十分な密封性を得られる。   In the invention described in claim 4, since the boundary between the row-like joint region and the notched row-like joint region is located substantially at the center in the width direction of the weld surface, it is possible to ensure welding. And the sufficient sealing performance inside the lamp can be obtained.

以下に、本発明車輌用灯具を実施するための最良の形態を図面を参照して説明する。   The best mode for carrying out the vehicular lamp of the present invention will be described below with reference to the drawings.

車輌用灯具１０はハウジング２０の前面が透明カバー３０で覆われ、ハウジング２０と透明カバー３０とで画成された図示しない灯室内に光源バルブが配置されている。   In the vehicular lamp 10, the front surface of the housing 20 is covered with a transparent cover 30, and a light source bulb is disposed in a lamp chamber (not shown) defined by the housing 20 and the transparent cover 30.

透明カバー３０は２つの異なる色の樹脂材料から成る部分（以下、「異色部分」という）３１、３２が一体に形成されて成る。異色部分３１は、例えば、赤色透明の樹脂材料で成形され、異色部分３２は、例えば、無色透明の樹脂材料で成形されている。そして、２つの異色部分３１、３２が接合されている境界線３３は透明カバー３０の側端面３０ａにまで達している。   The transparent cover 30 is formed by integrally forming parts (hereinafter referred to as “different color parts”) 31 and 32 made of resin materials of two different colors. The different color portion 31 is formed of, for example, a red transparent resin material, and the different color portion 32 is formed of, for example, a colorless and transparent resin material. The boundary line 33 where the two different color portions 31 and 32 are joined reaches the side end face 30 a of the transparent cover 30.

上記透明カバー３０は周縁部に沿って閉曲線状に延びる溶着面３４を有しており、該溶着面３４がハウジング２０の開口縁部に沿って形成された溶着面２１（図３、図４参照）とレーザ等の光線の照射による光線溶着によって溶着され一体化されている。   The transparent cover 30 has a welding surface 34 extending in a closed curve along the peripheral edge, and the welding surface 21 is formed along the opening edge of the housing 20 (see FIGS. 3 and 4). ) And a laser beam or other light beam welding to integrate them.

上記異色部分３１、３２の接合部のうち上記溶着面３４に対応した部分において、２つの接合領域３５、３６を有する。芋矧ぎ状接合領域３５は、図３に示すように、２つの異色部分３１、３２の端面３１ａ、３２ａが単に突き合わされた状態で一体化されているものであり、従って、この領域３５では表面に表れる境界線３３ｆと溶着面３４に表れる境界線３３ｒ１とが前後で重なって位置する。   Of the joint portions of the different color portions 31 and 32, the portion corresponding to the welding surface 34 has two joint regions 35 and 36. As shown in FIG. 3, the row-like joining region 35 is integrated in a state in which the end faces 31 a and 32 a of the two different color portions 31 and 32 are simply in contact with each other. The boundary line 33f appearing on the surface and the boundary line 33r1 appearing on the welding surface 34 are positioned so as to overlap each other.

欠き矧ぎ状接合領域３６は、図３及び図４に示すように、一方の異色部分３１には背面側部分が削り取られた如く肉厚がほぼ半分にされた薄肉部３１ｂが形成され、他方の異色部分３２には一方の異色部分の削り取られた背面側部分を埋め合わせる形状の薄肉突出部３２ｂが形成され、これら薄肉部３１ｂ、３２ｂが前後に重ね合わせられた状態で一体化されているものであり、従って、この領域３６では表面に表れる境界線３３ｆと溶着面３４に表れる境界線３３ｒ２とは溶着面３４の幅方向に交差する方向に離間して位置する。なお、濃い色の樹脂材料によって成形される異色部分３１の薄肉部３１ｂが淡い色の樹脂材料によって成形される異色部分３２の薄肉部３２ｂの前側に位置するようにするのが、見栄えの点で好ましい。   As shown in FIGS. 3 and 4, the notched joint region 36 is formed with a thin-walled portion 31 b in which the thickness is almost halved as the back side portion is scraped off in one of the different-colored portions 31. The different color portion 32 is formed with a thin protruding portion 32b having a shape to fill the back side portion of one of the different color portions, and these thin portions 31b and 32b are integrated in a state where they are overlapped in the front and rear. Therefore, in this region 36, the boundary line 33f appearing on the surface and the boundary line 33r2 appearing on the welding surface 34 are located apart from each other in the direction intersecting the width direction of the welding surface 34. In terms of appearance, the thin-walled portion 31b of the different-colored portion 31 molded by the dark-colored resin material is positioned on the front side of the thin-walled portion 32b of the different-colored portion 32 molded by the light-colored resin material. preferable.

上記したように、ハウジング２０と透明カバー３０とが溶着される部分において、溶着が十分に為されない恐れがある部分である異色部分３１、３２間の溶着面３４に表れる境界線３３ｒ１、３３ｒ２が、溶着面３４の幅方向に区分された２つの領域で、溶着面３４の幅方向に交差する方向にずれて位置するので、仮に、該境界線３３ｒ１、３３ｒ２及びその近接部分で溶着が十分に為されなかったとしても、該溶着不十分な箇所に溶着面３４の幅方向で隣接する箇所４０、４０では溶着が十分に為されているので、ハウジング２０と透明カバー３０との間の溶着部の密閉が不十分となることがない。なお、上記溶着部の密閉をより確実なものとにするためには、芋矧ぎ状接合領域３５において溶着面３４に現れる境界線３３ｒ１と欠き矧ぎ状接合領域３６において溶着面３４に表れる境界線３３ｒ２との溶着面３４の幅方向に交差する方向における間隔ｌ１（図２参照）が２ｍｍ以上あることが好ましい。また、溶着面３４の幅ｌ２（図２参照）は２〜３ｍｍあれば十分である。   As described above, in the portion where the housing 20 and the transparent cover 30 are welded, the boundary lines 33r1 and 33r2 appearing on the welding surface 34 between the different color portions 31 and 32, which may not be sufficiently welded, Since the two regions divided in the width direction of the welding surface 34 are shifted in the direction intersecting the width direction of the welding surface 34, the welding is sufficiently performed at the boundary lines 33r1 and 33r2 and its adjacent portions. Even if not, since welding is sufficiently performed at the locations 40 and 40 adjacent to the insufficiently welded portion in the width direction of the welded surface 34, the welded portion between the housing 20 and the transparent cover 30 is Sealing will not be insufficient. In order to secure the sealing of the welded portion, a boundary line 33r1 appearing on the welded surface 34 in the row-like joint region 35 and a boundary appearing on the welded surface 34 in the notch-like joint region 36 are shown. The distance l1 (see FIG. 2) in the direction intersecting the width direction of the welding surface 34 with the line 33r2 is preferably 2 mm or more. Further, it is sufficient that the width l2 (see FIG. 2) of the welding surface 34 is 2 to 3 mm.

なお、上記芋矧ぎ状接合領域３５と欠き矧ぎ状接合領域３６との境界は溶着面３４の幅方向のほぼ中央に位置していることが、すなわち、上記各領域３５、３６の幅ｗ１、ｗ２（図２参照）がほぼ等しくされていることが、溶着の確実性を高め、灯具内の密閉性を十分に得る上で、有利である。さらに、欠き矧ぎ状接合領域３６において各薄肉部３１ｂ、３２ｂの肉厚ｔ１、ｔ２（図４参照）がほぼ同じに形成されることが、溶着の確実性を高め、灯具内の密閉性を十分に得る上で、有利である。   It should be noted that the boundary between the row-like joint region 35 and the notched row-like joint region 36 is located substantially at the center in the width direction of the welding surface 34, that is, the width w 1 of each of the regions 35, 36. , W2 (see FIG. 2) are approximately equal in order to increase the reliability of welding and to obtain sufficient sealing performance in the lamp. Furthermore, the thicknesses t1 and t2 (see FIG. 4) of the thin portions 31b and 32b are formed to be substantially the same in the notched joining region 36, thereby improving the reliability of welding and improving the sealing performance in the lamp. It is advantageous in obtaining sufficiently.

図６乃至図９に本発明車輌用灯具の変形例１０Ａを示す。上記した実施の形態では、芋矧ぎ状接合領域３５が内側、すなわち、透明カバー３０の中心寄りに、欠き矧ぎ状接合領域３６が外側に形成されたが、この変形例１０Ａでは、内側に欠き矧ぎ状接合領域３６が形成され、外側に芋矧ぎ状接合領域３５が形成されている。なお、溶着面３４に対応する部分以外の部分でも異色部分３１の背面側部分が削り取られた如く肉厚がほぼ半分にされた薄肉部３１ｂが形成され、他方の異色部分３２には表面側部分が削り取られた如く肉厚がほぼ半分にされた薄肉部３２ｂが形成され、これら薄肉部３１ｂ、３２ｂが図８に示すように、欠き矧ぎ状に接合されている。この変形例においても、上記実施の形態１０におけると同様の効果を奏する。   6 to 9 show a modification 10A of the vehicle lamp of the present invention. In the above-described embodiment, the row-like joint region 35 is formed on the inner side, that is, near the center of the transparent cover 30, and the notched row-like joint region 36 is formed on the outer side. A notch-like joining region 36 is formed, and a row-like joining region 35 is formed outside. In addition, a thin portion 31b whose thickness is almost halved is formed in the portion other than the portion corresponding to the welding surface 34 so that the back side portion of the different color portion 31 is scraped off, and the other color portion 32 has a surface side portion. As shown in FIG. 8, a thin portion 32b whose thickness is almost halved is formed, and the thin portions 31b and 32b are joined in a notched shape as shown in FIG. Also in this modification, the same effect as in the tenth embodiment is achieved.

なお、上記した実施の形態及び変形例において示した各部の形状及び構造は、何れも本発明を実施するに際して行う具体化のほんの一例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されることがあってはならないものである。   It should be noted that the shapes and structures of the respective parts shown in the above-described embodiments and modifications are merely examples of the implementation performed in carrying out the present invention, and as a result, the technical scope of the present invention. Should not be interpreted in a limited way.

図面は本発明車輌用灯具の実施の形態を示すものであり、本図は概略正面図である。The drawings show an embodiment of the vehicular lamp of the present invention, and this figure is a schematic front view. 図１のＩＩ部の拡大図である。It is an enlarged view of the II section of FIG. 図２のＩＩＩ−ＩＩＩ線に沿う断面図である。It is sectional drawing which follows the III-III line of FIG. 図２のＩＶ−ＩＶ線に沿う断面図である。It is sectional drawing which follows the IV-IV line of FIG. ２つの異色部分を分離した状態で示す要部の概略斜視図である。It is a schematic perspective view of the principal part shown in the state which isolate | separated two different color parts. 図７乃至図９と共に本発明車輌用灯具の変形例を示すものであり、本図は図２と同じ部位を示す拡大正面図である。7 to 9 show a modification of the vehicular lamp according to the present invention, and this figure is an enlarged front view showing the same part as FIG. 図６のＶＩＩ−ＶＩＩ線に沿う断面図である。It is sectional drawing which follows the VII-VII line of FIG. 図６のＶＩＩＩ−ＶＩＩＩ線に沿う断面図である。It is sectional drawing which follows the VIII-VIII line of FIG. ２つの異色部分を分離した状態で示す要部の概略斜視図である。It is a schematic perspective view of the principal part shown in the state which isolate | separated two different color parts.

符号の説明Explanation of symbols

１０…車輌用灯具、２０…ハウジング、３０…透明カバー、３０ａ…側端面、３１…一方の異色部分、３２…他方の異色部分、３３ｆ…表面に表れる境界線、３３ｒ…溶着面に表れる境界線、３４…溶着面、３５…芋矧ぎ状接合領域、３６…欠き矧ぎ状接合領域、１０Ａ…車輌用灯具   DESCRIPTION OF SYMBOLS 10 ... Vehicle lamp, 20 ... Housing, 30 ... Transparent cover, 30a ... Side end surface, 31 ... One color part, 32 ... The other color part, 33f ... The boundary line which appears on the surface, 33r ... The boundary line which appears on the welding surface 34 ... welding surface, 35 ... row-like joining area, 36 ... notched row-like joining area, 10A ... vehicle lamp

Claims (4)

レーザ等の光線の照射によって互いに溶着される透明カバーとハウジングを備えた車輌用灯具であって、
上記透明カバーは複数の異なる色の樹脂材料から成る部分（以下、「異色部分」という）が一体に成形されて成ると共に、上記異色部分の接合部の境界線が透明カバーの側端面にまで達しており、
上記透明カバーは所定の幅をもってハウジングと接触すると共に閉曲線状に延びる溶着面を備えており、
上記異色部分の接合部のうち上記溶着面に対応した部分において、２つの異色部分が単に突き合わせられて接合されるいわゆる芋矧ぎ状接合領域と一方の異色部分の背面側部分が削り取られると共に他方の異色部分の表面側部分が削り取られた形状で接合されるいわゆる欠き矧ぎ状接合領域とを有し、上記芋矧ぎ状接合部分の溶着面に表れる境界線と上記欠き矧ぎ状接合部分の溶着面に表れる境界線とが溶着面の幅方向に交差する方向にずらされて位置する
ことを特徴とする車輌用灯具。 A vehicular lamp including a transparent cover and a housing which are welded to each other by irradiation with a light beam such as a laser,
The transparent cover is formed by integrally forming a plurality of parts made of resin materials of different colors (hereinafter referred to as “different colored parts”), and the boundary line of the joint part of the different colored parts reaches the side end surface of the transparent cover. And
The transparent cover has a welding surface that contacts the housing with a predetermined width and extends in a closed curve shape,
In the portion corresponding to the welding surface of the joint portion of the different color portion, a so-called row-shaped joint region where the two different color portions are simply abutted and joined, and the back side portion of one of the different color portions are scraped off and the other So that the surface side portion of the different color portion is joined in a shape that is cut off, and a boundary line that appears on the welding surface of the row-like joint portion and the notch-like joint portion A vehicle lamp, wherein the boundary line appearing on the welding surface is shifted in a direction intersecting the width direction of the welding surface. 上記芋矧ぎ状接合領域の表面に現れる境界線と上記欠き矧ぎ状接合領域の表面に現れる境界線とは連続した１本線として現れる
ことを特徴とする請求項１に記載の車輌用灯具。 The vehicular lamp according to claim 1, wherein the boundary line appearing on the surface of the row-like joint region and the boundary line appearing on the surface of the notch-like joint region appear as a continuous single line. 上記欠き矧ぎ状接合領域において２つの異色部分においてそれぞれ削り取られる部分の上記溶着面の幅方向に交差する方向の長さは２ｍｍ以上ある
ことを特徴とする請求項１又は請求項２に記載の車輌用灯具。 The length in the direction intersecting with the width direction of the welding surface of each of the two differently colored portions in the notched row joining region is 2 mm or more. Vehicle lamp. 上記芋矧ぎ状接合領域と上記欠き矧ぎ状接合領域との境界は上記溶着面の幅方向のほぼ中央に位置している
ことを特徴とする請求項１乃至請求項３の何れかに記載の車輌用灯具。 4. The boundary between the row-like joint region and the notched row-like joint region is located substantially at the center in the width direction of the welding surface. 5. Vehicle lamps.
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JP2001148203A (en) * 1999-11-19 2001-05-29 Koito Mfg Co Ltd Lighting equipment of vehicle
JP2003123506A (en) * 2001-10-09 2003-04-25 Ichikoh Ind Ltd Vehicular lamp and its laser welding method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001148203A (en) * 1999-11-19 2001-05-29 Koito Mfg Co Ltd Lighting equipment of vehicle
JP2003123506A (en) * 2001-10-09 2003-04-25 Ichikoh Ind Ltd Vehicular lamp and its laser welding method

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