Resin Panel Rivet Attachment Without Drilled Holes
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Solution Overview
Problem
Existing resin panels for vehicle luggage compartments require hole formation for blind rivet insertion, generating cutting chips and increasing man-hours, and securing attached members on the outer surface of resin molded bodies is challenging due to strength issues.
Innovation Solution
A manufacturing method where a blind rivet's rivet body is arranged in a concave portion on the resin panel surface, enlarged to penetrate the wall surface, eliminating the need for hole formation and enhancing attachment strength by jointly fastening the resin molded body and reinforcing material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a hole is formed on the resin panel for inserting the blind rivet, then the attached member can be attached to the resin panel, but cutting chips are generated and require removal, increasing man-hours
Solution Approach 1:
The resin panel surface is segmented into a flat outer surface and a localized concave portion. This segmentation allows the blind rivet to be inserted into the concave portion without requiring a complete through-hole, thereby eliminating cutting chip generation while maintaining attachment functionality.
Solution Approach 2:
The concave portion acts as an intermediary structure between the blind rivet and the outer surface of the resin panel. It provides a recessed space for rivet insertion and expansion, serving as a mediator that enables attachment without direct penetration through the entire panel thickness, thus avoiding chip generation.
2Ease of manufacture
If the attached member is fixed to the outer surface of the resin molded body, then the attachment process is simplified, but the strength is insufficient
Solution Approach 1:
The blind rivet is nested within the concave portion of the resin panel surface. The rivet body is inserted into the recessed space and expanded against the concave portion walls, creating a nested configuration that provides both simplified attachment process and enhanced strength through the mechanical interlocking within the concave structure.
Solution Approach 2:
The attachment mechanism transitions from surface-level fixing to a three-dimensional configuration within the concave portion. The blind rivet expands in multiple directions within the recessed space, utilizing the vertical dimension of the concave portion to create superior mechanical interlocking and attachment strength compared to surface-only fixing.
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
Reduces man-hours by eliminating cutting chip removal and secures attached members effectively on the resin molded body, enhancing structural strength and reducing manufacturing complexity.
Implementation Method 1
tearing a part of the rivet body to enlarge a diameter of the part of the rivet body, and allowing the part of the rivet body to penetrate a wall surface of the concave portion
Data Source
AI summary
An objective of the present invention is to attach an attached member to a resin panel with less man-hours. According to the present invention, provided is a manufacturing method of a resin panel including an attaching step. In the attaching step, an attached member is attached to a surface of a resin molded body by arranging a rivet body provided on a blind rivet in a concave portion formed on the surface, tearing a part of the rivet body to enlarge a diameter of the part of the rivet body, and allowing the part of the rivet body to penetrate a wall surface of the concave portion.