JPH0248311U

JPH0248311U -

Info

Publication number: JPH0248311U
Application number: JP12733188U
Authority: JP
Priority date: 1988-09-30
Filing date: 1988-09-30
Publication date: 1990-04-04
Anticipated expiration: 2003-02-17
Also published as: JPH056096Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例である前面レンズの
斜視図、第２図は第１図に示すレンズ成形用の金
型装置の断面図、第３図は金型装置の下金型の要
部拡大斜視図、第４図は前面レンズ内の樹脂の流
れを説明する説明図、第５図は他の実施例である
前面レンズの要部拡大斜視図、第６図は第５図に
示すレンズ成形用の金型装置の下金型の要部拡大
斜視図、第７図はさらに他の実施例である前面レ
ンズの斜視図、第８図は第７図に示すレンズ成形
用の金型装置の下金型の要部拡大斜視図、第９図
は従来の前面レンズの一部を破断した斜視図、第
１０図は従来の前面レンズ成形用の金型装置の断
面図である。２０，２０Ａ，２０Ｂ……樹脂成形品である前
面レンズ、２２……意匠面領域、２４……脚領域
、２４ａ……厚肉部、２５，２５ａ……段差部、
２８，２９……ゲート跡、３５……金型突合せ面
、３５ａ，３５ｂ……突出部、３６ａ……ゲート
、ＰＬ，ＰＬ_１……パーテイングライン。 Fig. 1 is a perspective view of a front lens according to an embodiment of the present invention, Fig. 2 is a sectional view of the mold device for molding the lens shown in Fig. 1, and Fig. 3 is a cross-sectional view of the lower mold of the mold device. FIG. 4 is an explanatory diagram illustrating the flow of resin in the front lens. FIG. 5 is an enlarged perspective view of the main portion of the front lens according to another embodiment. FIG. 6 is the same as FIG. 5. FIG. 7 is a perspective view of a front lens according to another embodiment, and FIG. 8 is an enlarged perspective view of the lower mold of the lens molding device shown in FIG. FIG. 9 is a partially cutaway perspective view of a conventional front lens, and FIG. 10 is a sectional view of a conventional mold apparatus for molding a front lens. 20, 20A, 20B... Front lens which is a resin molded product, 22... Design surface area, 24... Leg area, 24a... Thick wall part, 25, 25a... Step part,
28, 29... Gate trace, 35... Mold butt surface, 35a, 35b... Projection, 36a... Gate, PL, PL ₁ ... Parting line.

Claims

[Claims for Utility Model Registration] (1) A leg region that is substantially perpendicular to the design surface area is formed on the outer periphery of a wide design surface area, and a leg area that is away from the design surface area of the leg area is formed from a thick wall portion. In a resin molded product for a vehicle lamp, in which a stepped portion transitioning to the thin wall portion is formed, and the gate trace and parting line of the molding die are located in this stepped portion, the gate of the molding die is formed. 1. A resin molded product for a vehicle lamp, characterized in that the parting line around the mark and the gate is formed at a position offset toward the design surface area from the step position. (2) A leg region that is substantially orthogonal to the design surface area is formed on the outer periphery of the wide design surface area, and a stepped portion that transitions from the thick part to the thin part is formed in the leg area at a position away from the design surface area. In a resin molded product for a vehicle lamp that is formed such that the gate mark of the molding die and the parting line are located at this stepped portion, a part of the thick portion of the stepped portion is on the design surface area side. 1. A resin molded product for a vehicle lamp, characterized in that the resin molded product is formed such that a gate mark of a molding die and a parting line around the gate are located at a stepped portion of the notch. (3) A leg region that is substantially perpendicular to the design surface area is formed on the outer periphery of the wide design surface area, and a stepped portion that transitions from the thick part to the thin part is formed in the leg area at a position away from the design surface area. In a resin molded product for a vehicle lamp that is formed such that the gate mark of the molding die and the parting line are located in the stepped portion, the stepped portion is formed at a position close to the design surface area. A resin molded product for vehicle lighting, which is characterized by: