JPH03108201A - Lighting fixture for vehicle - Google Patents
Lighting fixture for vehicleInfo
- Publication number
- JPH03108201A JPH03108201A JP1243338A JP24333889A JPH03108201A JP H03108201 A JPH03108201 A JP H03108201A JP 1243338 A JP1243338 A JP 1243338A JP 24333889 A JP24333889 A JP 24333889A JP H03108201 A JPH03108201 A JP H03108201A
- Authority
- JP
- Japan
- Prior art keywords
- lamp
- resin
- lens
- molecular weight
- lamp body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 9
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 8
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 8
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 8
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims description 15
- 229920001893 acrylonitrile styrene Polymers 0.000 claims description 7
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 claims description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 2
- 239000000463 material Substances 0.000 description 16
- 239000002904 solvent Substances 0.000 description 11
- 229920000297 Rayon Polymers 0.000 description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 3
- 239000004926 polymethyl methacrylate Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Securing Globes, Refractors, Reflectors Or The Like (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ランプボディとランプレンズを溶着により結
合した型の車輌用灯具に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a vehicular lamp in which a lamp body and a lamp lens are joined together by welding.
（従来の技術）
従来、樹脂からなるランプボディおよびランプレンズの
接合を熱板溶着等の溶着により実施する場合がある。(Prior Art) Conventionally, a lamp body made of resin and a lamp lens may be joined by welding such as hot plate welding.
特に、一般的に用いられている樹脂材料は、ランプボデ
ィとしては分子量約１０万のアクリロニトリル・スチレ
ン共重合体にブタジェンゴムを混合した樹脂、ランプレ
ンズとしては分子量約１０万のメタアクリル酸メチル（
＝アクリル）樹脂が挙げられる。In particular, the commonly used resin materials are acrylonitrile-styrene copolymer with a molecular weight of about 100,000 mixed with butadiene rubber for the lamp body, and methyl methacrylate (with a molecular weight of about 100,000) for the lamp lens.
= acrylic) resin.
このような樹脂材料を溶着により接合して得た灯具に見
られる一番重大な欠点はレンズの接合部にクランク、特
にワックス等に含まれる有機溶剤等による溶剤クラック
が生じ易いという点である。The most serious drawback of lamps obtained by joining such resin materials by welding is that solvent cracks are likely to occur at the joint of the lens, especially due to organic solvents contained in wax and the like.
そして、従来から種々このようなりランクの発生を防止
するためレンズ材料の改良が実施されて来ているが、尚
、十分な成果が得られていないのが実情であった。Various improvements have been made to lens materials in order to prevent the occurrence of such ranks, but the reality is that sufficient results have not been obtained.
（発明が解決しようとする課題）
本発明は耐溶剤性が低く溶着部クランクが生じ易いとい
う従来の車輌用灯具の欠点を解消し、うンプレンズ材料
だけでなくランプボディをも改善し溶剤クラックの極め
て生じ難い耐溶剤性に優れた車輌灯具を提供することを
課題とするものである。(Problems to be Solved by the Invention) The present invention eliminates the disadvantages of conventional vehicle lamps such as low solvent resistance and the tendency to crack welds, and improves not only the lamp lens material but also the lamp body to prevent solvent cracks. It is an object of the present invention to provide a vehicle lamp that is extremely resistant to solvents and has excellent solvent resistance.
（課題を解決するための手段）
本発明は、ブタジェンゴムおよび分子量約１３万〜１５
万の範囲のアクリロニトリル−スチレン共重合体とから
なるブタジエン・アクリロニトリル−スチレン系樹脂よ
り形成されたランプボディと分子量約約１３万〜１５万
の範囲の範囲のポリマーからなるアクリル系樹脂より形
成されたランプレンズとが溶着により結合されているこ
とを特徴とする車輌用灯具である。(Means for Solving the Problems) The present invention provides butadiene rubber and a molecular weight of about 130,000 to 15
The lamp body is made of a butadiene-acrylonitrile-styrene resin made of an acrylonitrile-styrene copolymer with a molecular weight of about 130,000 to 150,000, and the lamp body is made of an acrylic resin made of a polymer with a molecular weight of about 130,000 to 150,000. This is a vehicle lamp characterized in that the lamp lens is joined to the lamp lens by welding.
本発明に用いられるブタジエン・アクリロニトリル−ス
チレン系樹脂（Ｂ−Ａｓ系樹脂と略記する）は、ブタジ
ェンゴム（ＢＲ）および分子量約１３万〜１５万の範囲
のアクリロニトリル−スチレン共重合体（Ａｓと略記す
る）とを含有する混合物である。The butadiene-acrylonitrile-styrene resin (abbreviated as B-As resin) used in the present invention is composed of butadiene rubber (BR) and an acrylonitrile-styrene copolymer (abbreviated as As) having a molecular weight of about 130,000 to 150,000. ).
ＡＳの分子量範囲は約１３万〜１５万で、好ましく−は
約１４万である。The molecular weight range of AS is about 130,000 to 150,000, preferably about 140,000.
Ｂ−ＡＳ系樹脂のＢＲとＡＳとの配合比率は灯具の種類
、溶着条件等により、設定することができ、又、所望に
より、Ｂ−ＡＳ系樹脂のその他の成分として、その他の
公知の樹脂およびゴム、および公知の添加剤、例えば、
可塑剤等を含有することができる。The blending ratio of BR and AS in the B-AS resin can be set depending on the type of lamp, welding conditions, etc. If desired, other known resins may be used as other components of the B-AS resin. and rubber, and known additives, e.g.
It can contain a plasticizer and the like.
一方、ランプレンズ材料のアクリル系樹脂を構成するポ
リマーとしては、分子量約１３万〜１５万で、好ましく
は約１４万のポリメタアクリル酸メチルであり、所望に
より、他のポリマーをブレンドすること及び公知の添加
剤を含有することもできる。On the other hand, the polymer constituting the acrylic resin of the lamp lens material is polymethyl methacrylate, which has a molecular weight of about 130,000 to 150,000, preferably about 140,000, and may be blended with other polymers if desired. It may also contain known additives.
上記、Ｂ−ＡＳ系樹脂を成型したランプボディとアクリ
ル系樹脂を成型したランプレンズとを溶着して両者を結
合する方法としては、通常、熱板溶着法が用いられるが
、場合により、超音波溶着等により実施することもでき
る。Hot plate welding is usually used to weld the lamp body molded from B-AS resin and the lamp lens molded from acrylic resin, but in some cases, ultrasonic It can also be carried out by welding or the like.
又、溶着直後は好ましくは溶着部を防止するためＴｇ点
以上の温度に一定時間保持することが望ましく、例えば
、８０℃、３０分間恒温槽に保持するとよい。Immediately after welding, it is desirable to maintain the temperature at or above the Tg point for a certain period of time in order to prevent welding. For example, it is preferable to maintain the temperature in a constant temperature bath at 80° C. for 30 minutes.
（作用）
本発明は、従来、溶着部の溶剤クランクの原因がランプ
レンズ材料の品質にあるとの通説を覆して、ランプボデ
ィ材料とランプレンズ材料の両者にその原因があること
を発見し、両材料を改良することにより達成されたもの
である。即ち、溶剤クラックが進行するのはレンズであ
るが、クラックをよく観察するとクランク発生部位は両
材料の溶着界面であるので本発明に用いるＢ−ＡＳ系樹
脂とアクリル系樹脂の如（従来のレンズ及びボディ樹脂
材料に比べてより高分子の両材料を使用することにより
溶着界面での両部材の分子鎖のからみ合う物理的力と分
子鎖間の化学的分子間力とからなる吸引力を増強するこ
とに成、功し本発明を完成したものである。(Function) The present invention overturns the conventional wisdom that the cause of solvent crank in the welded part is the quality of the lamp lens material, and discovers that the cause is both the lamp body material and the lamp lens material. This was achieved by improving both materials. In other words, solvent cracks develop in lenses, but when the cracks are observed closely, the cracks occur at the welded interface between the two materials. By using both materials, which have a higher molecular weight than the body resin material, the attraction force consisting of the physical force of the entanglement of the molecular chains of both parts and the chemical intermolecular force between the molecular chains at the welding interface is enhanced. The present invention was successfully completed.
従って、本発明の車輌用灯具は、ワックス等に含有され
る溶剤が付着し、溶着界面における圧着歪（反発力）が
レンズおよびボディの物理化学的分子間力（吸引力）よ
り大きくなって発生すると考えられるクラックを該吸引
力を上述の通り増大させることにより溶剤が付着しても
該反発力より吸引力を大きくし保持できるためクラック
を防止することができるものと考えられる。Therefore, in the vehicle lamp of the present invention, the solvent contained in wax etc. adheres, and the pressure strain (repulsion force) at the welding interface becomes larger than the physicochemical intermolecular force (attraction force) between the lens and the body. It is thought that by increasing the suction force as described above, cracks can be prevented even if the solvent adheres because the suction force can be made larger than the repulsion force and maintained.
（実施例）
以下、本発明の具体的実施例を第１図を参照して説明す
るが、本発明はこれに限定されるものではない。(Example) Hereinafter, a specific example of the present invention will be described with reference to FIG. 1, but the present invention is not limited thereto.
第１図は本発明車輌用灯具の縦断側面図であり、車輌灯
具ｌはＢ−ＡＳ系樹脂（商品名：ＡＢ３３００１Ｇ、三
菱レイヨン社製、ＡＳ分子量：約１４万）から成型され
たランプボディ２、アクリル系樹脂（商品名ニアクリベ
ット ＶＨ４，三菱レイヨン社製、ポリメタアクリル酸
メチルの分子量：約１４万）から成型されたレンズ３お
よびランプ４から大略構成され、ランプボディ２とアク
リル系樹脂は常温下、溶着温度４００°Ｃの熱板溶着に
て結合された溶着部５を有している。FIG. 1 is a longitudinal sectional side view of the vehicle lamp of the present invention, in which the vehicle lamp l has a lamp body 2 molded from B-AS resin (product name: AB33001G, manufactured by Mitsubishi Rayon Co., Ltd., AS molecular weight: approximately 140,000). The lens 3 and the lamp 4 are molded from an acrylic resin (trade name: NIACRIVET VH4, manufactured by Mitsubishi Rayon Co., Ltd., molecular weight of polymethyl methacrylate: approximately 140,000), and the lamp body 2 and the acrylic resin are kept at room temperature. At the bottom, there is a welded part 5 joined by hot plate welding at a welding temperature of 400°C.
上記、車輌用灯具の耐溶剤性（耐クラツク性）を評価す
るため灯具に溶剤を筆ぬりし、５５ ’ＣＸ４ｈｒ加熱
後灯具のワレを観察した所、拡大鏡ではワレが見えたが
肉眼ではワレは見えなかった。比較のため下記材料のボ
ディおよびレンズを用いた従来品を同条件で試験した所
、明らかに肉眼でワレが見えるか、意識的に見てワレが
見えると言う品位で本発明に較べ劣悪であった。As mentioned above, in order to evaluate the solvent resistance (cracking resistance) of the vehicle lamp, we painted the lamp with solvent and observed the crack after heating it for 55'CX4 hours. I couldn't see it. For comparison, a conventional product using a body and lens made of the following materials was tested under the same conditions, and was found to be inferior to the present invention in terms of quality, with cracks clearly visible with the naked eye or cracks visible when consciously viewed. Ta.
従来品ボディ樹脂材料：Ｂ−ＡＳ系樹脂（商品名：ＡＢ
３ ３００１Ｍ、三菱レイヨン社製、Ａ３分子量：約１
０万）
従来品レンズ樹脂材料ニアクリル系樹脂（商品名；ＡＭ
アクリベット ＶＨ３，三菱レイヨン社製、ポリメタ
アクリル酸メチルの分子量：約１０万）
（発明の効果）
本発明はランプレンズとランプボディの溶着部に発生す
るクラックを両部材の樹脂材質を改善するのみで防止で
きるのみならず従来品に要したクランク防止手段、例え
ば、溶着部に薄膜を設けること等を排除できるので経済
性、省力性にも優れているため、需要者及び業界に与え
る効果、利益は多大である。Conventional product Body resin material: B-AS resin (product name: AB
3 3001M, manufactured by Mitsubishi Rayon Co., Ltd., A3 molecular weight: approximately 1
00,000) Conventional lens resin material Niacrylic resin (product name: AM
Acrivet VH3, manufactured by Mitsubishi Rayon Co., Ltd., molecular weight of polymethyl methacrylate: approximately 100,000) (Effects of the invention) The present invention only improves the resin material of both parts to prevent cracks that occur at the welded part of the lamp lens and lamp body. Not only can it be used to prevent cranking, but it also eliminates the crank prevention measures required for conventional products, such as providing a thin film on the welded part, which is economical and labor-saving. is huge.
第１図は本発明の車輌用灯具の縦断側面図である。 （ほか３名） FIG. 1 is a longitudinal sectional side view of a vehicle lamp according to the present invention. (3 others)
Claims (1)
のアクリロニトリル−スチレン共重合体とからなるブタ
ジエン・アクリロニトリル−スチレン系樹脂より形成さ
れたランプボディと分子量約約１３万〜１５万の範囲の
範囲のポリマーからなるアクリル系樹脂より形成された
ランプレンズとが溶着により結合されていることを特徴
とする車輌用灯具。A lamp body formed from a butadiene-acrylonitrile-styrene resin consisting of butadiene rubber and an acrylonitrile-styrene copolymer having a molecular weight of approximately 130,000 to 150,000, and a polymer having a molecular weight of approximately 130,000 to 150,000. A vehicular lamp characterized in that a lamp lens made of an acrylic resin is joined by welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1243338A JPH03108201A (en) | 1989-09-21 | 1989-09-21 | Lighting fixture for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1243338A JPH03108201A (en) | 1989-09-21 | 1989-09-21 | Lighting fixture for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03108201A true JPH03108201A (en) | 1991-05-08 |
| JPH0582001B2 JPH0582001B2 (en) | 1993-11-17 |
Family
ID=17102340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1243338A Granted JPH03108201A (en) | 1989-09-21 | 1989-09-21 | Lighting fixture for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03108201A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0633305U (en) * | 1992-09-30 | 1994-04-28 | スタンレー電気株式会社 | Vehicle lighting |
| JP2009249529A (en) * | 2008-04-08 | 2009-10-29 | Sumitomo Chemical Co Ltd | Methacrylic resin composition for hot plate melt-bonding |
-
1989
- 1989-09-21 JP JP1243338A patent/JPH03108201A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0633305U (en) * | 1992-09-30 | 1994-04-28 | スタンレー電気株式会社 | Vehicle lighting |
| JP2009249529A (en) * | 2008-04-08 | 2009-10-29 | Sumitomo Chemical Co Ltd | Methacrylic resin composition for hot plate melt-bonding |
| EP2287249A1 (en) | 2008-04-08 | 2011-02-23 | Sumitomo Chemical Company, Limited | Methacrylic resin composition for hot plate melt-bonding, use of the same for hot plate melt-bonding, and melt-bonding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0582001B2 (en) | 1993-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0984068A3 (en) | Sequences of hepatitis c virus genotypes and their use as therapeutic and diagnostic agents | |
| EP0355029A3 (en) | Thermoplastic propylene resin composition | |
| JPH037746A (en) | Adhesive blend of graft block copolymer of polyolefin and polystyrene | |
| US3242038A (en) | Laminates of polyalkenes and certain block copolymers | |
| CA1193377A (en) | Production of polyolefin copolymer | |
| KR960014240A (en) | Thermoplastic Molding Material | |
| JPH03108201A (en) | Lighting fixture for vehicle | |
| ITMI921894A1 (en) | PROCEDURE FOR FUNCTIONALIZING ETHYLENE POLYMERS | |
| JPH01256556A (en) | Emulsion of carboxylated chlorinated polyolefin | |
| KR950032444A (en) | Conveyor belt made from a composition consisting of vinylaromatic-conjugated diene block copolymer | |
| RU94026252A (en) | Modified elastomeric polypropylenes, method of modification of elastomeric polypropylenes, composition based on polyolefins and nonolefin thermoplast | |
| JPS6411109A (en) | Compatibilizing agent for compatibilizing at least two mutually incompatible thermoplastic polymers, manufacture and thermoplastic polymer alloy | |
| KR890008244A (en) | Thermoplastic polymer mixtures, methods for making the same and articles made therefrom | |
| JP3600666B2 (en) | Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle | |
| JPS62503176A (en) | Thermoset adhesive for use in heat recoverable closures | |
| JP3600665B2 (en) | Rubber reinforced thermoplastic resin material for hot plate fusion and lamp for vehicle | |
| EP0786494A3 (en) | Formed article with an improved resistance against stress cracking | |
| EP0333414A3 (en) | Improved thermoplastic polyester resin and process for producing the same | |
| JPS58180401A (en) | Adhesive composition for capturing small life | |
| RU94037597A (en) | Polymer composition | |
| JPH08302217A (en) | Compatibilizer and its production | |
| JP3691215B2 (en) | Non-slip polypropylene molded article and its production method | |
| GB2167319A (en) | Shrink article | |
| JP2005297432A (en) | Stopper manufacturing method | |
| JPS5632138A (en) | Photosensitive polyamide composition |