JPH0140085Y2 - - Google Patents
Info
- Publication number
- JPH0140085Y2 JPH0140085Y2 JP18018884U JP18018884U JPH0140085Y2 JP H0140085 Y2 JPH0140085 Y2 JP H0140085Y2 JP 18018884 U JP18018884 U JP 18018884U JP 18018884 U JP18018884 U JP 18018884U JP H0140085 Y2 JPH0140085 Y2 JP H0140085Y2
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- basic
- reflective surface
- stepped portion
- wall thickness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、車両用灯具などに用いられる多量反
射面の合成樹脂製リフレクターにおいて、リフレ
クターの段差部の構造に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a structure of a stepped portion of a reflector in a synthetic resin reflector with a large amount of reflection surface used in vehicle lamps and the like.
（従来技術）
従来、２種以上の反射面部を有する（マルチフ
オーカス）合成樹脂製リフレクターにおいては、
第４図と第５図に示すように、リフレクターａの
隣接する反射面部ｂの境界には段差部ｃが形成さ
れ、反射面部ｂの肉厚Tbをリフレクターａの基
本肉厚Ｔとして段差部ｃの肉厚Tcも前記反射面
部ｂの肉厚Tbと同じに設定されていた。(Prior art) Conventionally, in a synthetic resin reflector having two or more types of reflective surfaces (multi-focus),
As shown in FIGS. 4 and 5, a step c is formed at the boundary between adjacent reflective surface portions b of reflector a, and the step c The wall thickness Tc was also set to be the same as the wall thickness Tb of the reflective surface portion b.
（考案が解決しようとする問題点）
しかしながら、上記した従来のリフレクターで
は、反射面部の肉厚と段差部の肉厚とを同じにし
て成形されるところから、合成樹脂成形品特有の
ヒケが、段差部における前位の反射面部側端ｄに
発生し易いという欠点があり、設定された段差部
形状と異なると配光上悪影響を及ぼすという不都
合な点があつた。(Problems to be solved by the invention) However, in the conventional reflector described above, the wall thickness of the reflective surface part and the wall thickness of the step part are made the same, so sink marks peculiar to synthetic resin molded products occur. There is a disadvantage that this phenomenon tends to occur at the front reflective surface side end d of the stepped portion, and if the shape of the stepped portion differs from the set one, it has an adverse effect on light distribution.
（問題点を解決するための手段）
本考案は、上記した従来の欠点を考慮してなさ
れたもので、２種以上の反射面部を有する合成樹
脂製リフレクターにおいて、反射面部境界の段差
が基本肉厚以上である段差部は、該段差部の肉厚
を基本肉厚より小さくし、反射面部境界の段差が
基本肉厚より小さい段差部は、該段差部の裏面を
段状に形成せず一方の反射面部を基本肉厚より薄
肉に設けたことにより、従来の欠点を解消するの
である。(Means for Solving the Problems) The present invention has been made in consideration of the above-mentioned drawbacks of the conventional technology, and is intended to provide a reflector made of synthetic resin having two or more types of reflective surfaces, in which the step at the boundary of the reflective surface is the basic thickness. For a stepped portion having a thickness greater than or equal to the basic thickness, the thickness of the stepped portion is made smaller than the basic thickness, and for a stepped portion where the step at the boundary of the reflective surface portion is smaller than the basic thickness, the back surface of the stepped portion is not formed into a step shape. By making the reflective surface portion thinner than the basic thickness, the drawbacks of the conventional method are overcome.
（作用）
本考案においては、段差部の肉厚を基本肉厚よ
り小さくし、また段差部の段差が基本肉厚より小
さい場合には、段差部の裏面に段差を形成せず一
方の反射面部を薄肉にして、ヒケの発生を防止す
るのである。(Function) In the present invention, the thickness of the stepped portion is made smaller than the basic thickness, and when the stepped portion is smaller than the basic thickness, no step is formed on the back surface of the stepped portion and one reflective surface is This is done by making the wall thinner to prevent sink marks from forming.
（実施例）
つぎに、本考案を第１図から第３図に示す実施
例に基づいて詳細に説明する。(Example) Next, the present invention will be explained in detail based on the example shown in FIGS. 1 to 3.
図中１は合成樹脂製のリフレクターで、複数の
反射面部２を有し、反射面部２の境界には段差部
３が形成されている。第１図に示すように、前記
段差部３の段差ｔがリフレクター１の基本肉厚Ｔ
より大きい場合には、段差部３の肉厚T3は基本
肉厚Ｔより小さくなつており（T3＜Ｔ）、また第
２図に示すように、段差部３の段差ｔが基本厚Ｔ
より小さい場合には、段差部３の裏面を段状に形
成せず、後位に位置する反射面部２の肉厚T2を
基本肉厚Ｔより小さく設けられているのである
（T2＜Ｔ）。これによりリフレクターの成形後、
成形型内で段差部３の薄肉部分が最初に冷え始め
て硬化し、その後厚肉部分が冷え始めて硬化する
ことから、段差部３における前位に位置する反射
面部２の側端４にヒケの発生を防止することがで
きるのである。 In the figure, reference numeral 1 denotes a reflector made of synthetic resin, which has a plurality of reflective surface parts 2, and a step part 3 is formed at the boundary of the reflective surface parts 2. As shown in FIG. 1, the step t of the step portion 3 is the basic wall thickness T of the reflector 1.
If the thickness is larger, the thickness T 3 of the stepped portion 3 is smaller than the basic thickness T (T 3 <T), and as shown in FIG.
If the thickness is smaller, the back surface of the stepped portion 3 is not formed into a stepped shape, and the thickness T 2 of the reflective surface portion 2 located at the rear is set smaller than the basic thickness T (T 2 <T ). As a result, after forming the reflector,
In the mold, the thin part of the stepped part 3 first begins to cool and hardens, and then the thick part begins to cool and harden, so sink marks occur on the side edge 4 of the reflective surface part 2 located at the front of the stepped part 3. It is possible to prevent this.
またさらに、第３図に示すように、上記側端４
の肉厚T4を薄肉（T4＜Ｔ）にすれば、側端４が
初期に硬化し、ヒケの発生を確実に防止すること
ができ、効果的である。 Furthermore, as shown in FIG.
If the wall thickness T 4 is made thin (T 4 <T), the side edges 4 will harden at an early stage, and the occurrence of sink marks can be reliably prevented, which is effective.
（考案の効果）
以上説明したように、本考案によれば、段差が
基本肉厚以上である段差部は、その肉厚を基本肉
厚より小さくし、段差が基本肉厚より小さい段差
部は、その裏面を段状に形成せず、一方の反射面
部を基本肉厚より薄肉に設けたので、段差部にお
ける前位の反射面部側端は、他の厚肉部分より初
期に硬化してヒケが発生することがなく、設定ど
おりの形状の段差部が得られて配光に対する悪影
響が減少するとともに、成形金型による対応のみ
であるため、二次加工などによるコスト増が無い
など、実用性にすぐれた効果を奏するものであ
る。(Effects of the invention) As explained above, according to the invention, the wall thickness of the stepped portion where the step is equal to or greater than the basic wall thickness is made smaller than the basic wall thickness, and the stepped portion where the step is smaller than the basic wall thickness is made smaller than the basic wall thickness. , since the back surface is not formed in a step shape and one of the reflective surfaces is made thinner than the basic wall thickness, the front reflective surface side edge of the stepped portion hardens earlier than the other thick portions and causes sinks. It is highly practical, as it eliminates the occurrence of bumps, reduces the negative effect on light distribution by providing stepped sections with the desired shape, and eliminates the cost increase due to secondary processing because only molding molds are used. It has excellent effects.
第１図は本考案に係るリフレクターの一実施例
の要部（T3＜Ｔ）を示す拡大断面図、第２図は
同じく要部（T2＜Ｔ）を示す拡大断面図、第３
図は他の実施例の要部（T4＜Ｔ）を示す拡大断
面図、第４図は従来例を示す正面図、第５図は第
４図−線に沿つて切断した拡大断面図であ
る。
１……リフレクター、２……反射面部、３……
段差部。
FIG. 1 is an enlarged sectional view showing the main part (T 3 <T) of an embodiment of the reflector according to the present invention, FIG. 2 is an enlarged sectional view also showing the main part (T 2 <T), and FIG.
The figure is an enlarged sectional view showing the main part (T 4 <T) of another embodiment, FIG. 4 is a front view showing a conventional example, and FIG. 5 is an enlarged sectional view taken along the line shown in FIG. 4. be. 1... Reflector, 2... Reflective surface section, 3...
Step part.
Claims (1)
クターにおいて、反射面部境界の段差が基本肉厚
以上である段差部は、該段差部の肉厚を基本肉厚
より小さくし、反射面部境界の段差が基本肉厚よ
り小さい段差部は、該段差部の裏面を段状に形成
せず一方の反射面部を基本肉厚より薄肉に設けた
ことを特徴とするリフレクター。 In a synthetic resin reflector having two or more types of reflective surface parts, for a step part where the step at the boundary of the reflective surface part is equal to or greater than the basic thickness, the wall thickness of the step part is made smaller than the basic wall thickness, and the step part at the boundary of the reflective surface part is made smaller than the basic wall thickness. A reflector characterized in that the stepped portion having a thickness smaller than the basic thickness has one reflecting surface portion thinner than the basic thickness without forming the back surface of the stepped portion in a stepped shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18018884U JPH0140085Y2 (en) | 1984-11-28 | 1984-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18018884U JPH0140085Y2 (en) | 1984-11-28 | 1984-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6195001U JPS6195001U (en) | 1986-06-19 |
| JPH0140085Y2 true JPH0140085Y2 (en) | 1989-12-01 |
Family
ID=30737747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18018884U Expired JPH0140085Y2 (en) | 1984-11-28 | 1984-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0140085Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5731184B2 (en) * | 2010-12-15 | 2015-06-10 | 株式会社小糸製作所 | Vehicle lamp |
-
1984
- 1984-11-28 JP JP18018884U patent/JPH0140085Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6195001U (en) | 1986-06-19 |
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