Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vehicle light

A technology for lamps and vehicles, which is applied in the direction of headlights, vehicle parts, vehicle lighting systems, etc. It can solve the problems of poor adhesion between the lamp body and the front cover, peeling of the joint, etc., and achieve good adhesion and improved bonding workability , eliminate the effect of stripping

Inactive Publication Date: 2014-10-22
KOITO MFG CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, when joining the lamp body and the front cover formed of a resin composition containing a matrix resin and plant fibers, there is a problem that if a hot-melt adhesive is used, the adhesion between the lamp body and the front cover is poor, and even temporarily Bonded, but the bonded part peeled off due to the passage of time

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vehicle light
  • Vehicle light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0060] (Examples 1 to 3, Comparative Examples 1 to 3 and Conventional Examples)

[0061] (mixing and granulation of matrix resin and plant fiber)

[0062] Polypropylene (PP) was used as a matrix resin, and the plant fibers described in Table 1 below were added and kneaded so as to be the content described in Table 1 below relative to the total amount of the matrix resin and plant fibers.

[0063] After kneading, pellets with an average diameter of 3 mm and an average length of 8 mm were produced using an extrusion kneader.

[0064] (production of moldings)

[0065] After pre-drying each pellet at 90°C for 4 hours, put them into an injection molding machine (manufactured by Toshiba Machine Co., Ltd., EC40N), and perform injection molding at a cylinder temperature of 190°C and a mold temperature of 40°C. The shape is 110mm×60mm ×3mm rectangular plate test piece.

[0066] (adhesive evaluation)

[0067] After activating the bonded part of the formed plate-shaped test piece in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a vehicle light (1) that uses a lamp body (3) formed from a plastic composite containing a base plastic and a plant fiber, wherein: adhesion between the lamp body (3) and a front cover (2) is good; and there is no separation of a join between the lamp body (3) and the front cover (2) caused by aging. The lamp body (3) is formed from the plastic composite containing the base plastic and the plant fiber, and the join portion between the lamp body (3) and the front cover (2) is characterized by being joined by a moisture-curable adhesive.

Description

technical field [0001] The present invention relates to a vehicular lamp, and relates to a vehicular lamp which is light in weight and high in strength, has good adhesiveness between a lamp body and a front cover, and does not peel off the junction between the lamp body and the front cover over time. Background technique [0002] In recent years, weight reduction of vehicles is desired, and therefore, weight reduction of each component constituting the vehicle is being promoted. Lamps (lamps) are also included as one of the vehicle parts required to be lightweight. [0003] A vehicle lamp generally includes a lamp body with an opening in front, a front cover attached to close the opening in front, an extension, a reflector, a light source, electronic components, and the like. In reducing the total weight of such a vehicular lamp, it is generally considered effective to reduce the weight of the lamp body, which is formed of a resin material and accounts for a relatively high...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21W101/10F21W101/14F21Y101/00
CPCF21S48/33F21S48/1208F21S48/155F21S41/29F21S41/55F21S45/50C09J2301/306C09J175/04
Inventor 长田和仁増田深吉村刚直
Owner KOITO MFG CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com