Foldable Display Hinge Assembly With Resin-Embedded Metal Reinforcement
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Solution Overview
Problem
Existing foldable display devices face challenges with heavy stainless steel hinge assemblies that hinder lightweight designs and are costly.
Innovation Solution
A hinge assembly incorporating a resin matrix with embedded metal parts provides high support strength, reduced weight, and lower costs, ensuring flatness and rigidity for foldable display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stainless steel hinge assembly is used, then support strength is improved, but weight increases and cost increases
Solution Approach 1:
The hinge assembly uses a composite structure combining resin matrix with embedded metal parts. The resin provides lightweight properties while the embedded metal parts (such as metal reinforcement ribs or metal sheets) provide structural strength, achieving both lightweight and high support strength requirements.
Solution Approach 2:
Instead of using entirely metal or entirely resin, the patent applies metal reinforcement locally at critical stress points within the hinge assembly. The metal parts are strategically positioned where strength is most needed, while resin is used in areas where weight reduction is prioritized, optimizing the balance between strength and weight.
2Strength
If stainless steel hinge assembly is used, then support strength is improved, but cost increases
Solution Approach 1:
The composite structure of resin with embedded metal parts reduces material costs compared to using entirely metal, while maintaining necessary strength through strategic metal placement. This approach lowers overall manufacturing cost while preserving support strength.
Solution Approach 2:
The patent optimizes the ratio, distribution, and type of metal reinforcement within the resin matrix to achieve the minimum necessary strength at lowest cost. By carefully controlling these parameters, the design achieves cost-effectiveness while maintaining structural integrity.
3Weight of moving object
If resin material alone is used, then weight is reduced, but support strength decreases
Solution Approach 1:
The hinge assembly combines resin matrix with embedded metal parts to achieve both lightweight properties and high support strength. The resin provides the lightweight base structure while the embedded metal parts reinforce critical areas to maintain strength requirements.
Solution Approach 2:
Metal reinforcement is applied locally at positions where maximum strength is required, such as at hinge joints and connection points, while leaving other areas as lightweight resin, thus optimizing the strength-to-weight ratio.
4Strength
If pure metal material is used, then support strength is improved, but weight increases and cost increases
Solution Approach 1:
The patent employs a composite construction with resin as the base material and metal parts as reinforcement elements. This combination achieves the necessary support strength while significantly reducing weight and cost compared to using pure metal throughout the entire hinge assembly.
Data Source
AI summary
This application provides a hinge assembly and a foldable display device. The hinge assembly includes a hinge and at least two support structures that are rotatably connected to the hinge and located on two sides of the hinge. At least one of the support structures includes a resin matrix and at least one metal part embedded in the resin matrix. The hinge assembly in this application has high support strength, a light weight, and low costs, and can provide flatness and rigidity for a screen of the foldable display device, thereby facilitating lightweight of the foldable display device.