Encapsulated Bright Strip Assembly for Narrow Uniform Joints
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Solution Overview
Problem
Existing encapsulation assembly products for bright decorative strips in automobiles face challenges in minimizing gaps between strips and the body sheet metal while maintaining a visually appealing and uniform appearance, due to limitations in soft rubber thickness and the visible difference between EPDM foaming material and encapsulation soft rubber.
Innovation Solution
The encapsulated bright strip assembly incorporates a strip-shaped main body with pre-injection molded compressible deformable encapsulation soft rubber, featuring a foaming area with evenly distributed foaming holes, which reduces the gap width to 0.8 mm or less by compressing under external force, ensuring a smooth and uniform appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soft rubber is used to prevent collision noise between bright decorative strips and body sheet metal, then the noise prevention function is improved, but the gap width increases beyond 0.8 mm which deteriorates the visual appearance
Solution Approach 1:
The encapsulation soft rubber incorporates a foaming area with numerous foaming holes distributed throughout its structure. This porous configuration enables the material to be compressed to extremely thin dimensions (≤0.8 mm) while maintaining sufficient thickness to prevent collision noise between bright decorative strips and body sheet metal during automobile travel.
2Reliability
If EPDM foaming material is used to buffer between bright decorative strips and body sheet metal, then the buffering function is improved, but the appearance difference between EPDM material and encapsulation soft rubber becomes visible which deteriorates the visual appearance
Solution Approach 1:
The foaming area is formed as an integrated part of the encapsulation soft rubber through pre-injection molding, creating a homogeneous structure where the foaming holes are distributed within the same material matrix. This eliminates the appearance difference between separate EPDM foaming material and encapsulation soft rubber, as they are now unified into a single homogeneous component with consistent visual appearance.
Solution Approach 2:
The invention merges the buffering function (previously requiring separate EPDM foaming material) with the encapsulation soft rubber by incorporating the foaming area directly into the soft rubber structure through pre-injection molding. This consolidation eliminates the need for separate materials and their associated appearance differences.
3Reliability
If double-sided adhesive tape is used to bind EPDM foaming material and encapsulation soft rubber, then the binding function is improved, but the operational complexity increases which deteriorates the ease of manufacture
Solution Approach 1:
The invention merges the binding function with the molding process by using pre-injection molding to create an integrated structure where the foaming area and encapsulation soft rubber are formed as one piece. This eliminates the need for separate binding operations using double-sided adhesive tape, significantly reducing operational complexity.
Solution Approach 2:
The foaming area is pre-formed within the encapsulation soft rubber through pre-injection molding before final assembly. This preliminary action integrates the buffering and binding functions into the molding process itself, eliminating subsequent binding operations and reducing manufacturing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively reduces the gap width between the bright decorative strip and external components to 0.8 mm or less, maintaining a flat and uniform joint appearance without visible differences, thus addressing the visual and functional challenges of existing technologies.
Implementation Method 1
the encapsulation soft rubber comprises a foaming area inside... by compressing under external force... effectively reduces the gap width
Implementation Method 2
pre-injection molded compressible deformable encapsulation soft rubber, featuring a foaming area with evenly distributed foaming holes, which reduces the gap width to 0.8 mm or less by compressing under external force
Data Source
AI summary
Disclosed are encapsulated bright strip assembly, and a method for connecting the encapsulated bright strip assembly and an external component. The encapsulated bright strip assembly comprises a strip-shaped body (11), and an encapsulation soft rubber (111) which internally contains foaming pores and is arranged at an end portion of the strip-shaped body (11). The connecting method comprises: attaching an outer surface of the encapsulation soft rubber of the encapsulated bright strip assembly to an end portion of the external component; and pressing the strip-shaped body and the external component, so as to compress the encapsulation soft rubber. The appearance of the joint between the encapsulated bright strip assembly and the external component is flat and uniform, and a gap therebetween is narrow.