Bundled Flexible Flat Circuit Cable for Hinge Bore Passage
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Solution Overview
Problem
Conventional flat cables face issues with flexibility and durability when used in hinge structures of electronic devices, particularly due to their inability to easily pass through small diameters and susceptibility to electromagnetic interference.
Innovation Solution
A bundled flexible flat circuit cable with a stack structure and electromagnetic shielding, featuring a flexible substrate with cluster sections that can be folded to reduce width and bundled with shielding material to enhance durability and interference protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional flat cable is used for signal transmission, then the cable structure is simple and easy to manufacture, but the cable cannot easily pass through small diameter bores in hinge structures
Solution Approach 1:
The flat cable is divided into multiple independent conductors that are bundled together. Each conductor can flex independently, allowing the bundled cable to bend and pass through small diameter bores in hinge structures more easily than a conventional solid flat cable.
Solution Approach 2:
The cable structure transitions from a two-dimensional flat configuration to a three-dimensional bundled configuration. This dimensional change allows the cable to achieve the necessary flexibility and curvature to pass through tight spaces while maintaining signal transmission capability.
2Ease of operation
If the cable structure is made more flexible to pass through small bores, then the ease of installation improves, but the durability against flexing deteriorates
Solution Approach 1:
By segmenting the cable into multiple individual conductors within a bundled structure, each conductor can flex independently with smaller stress concentrations. This segmentation distributes the mechanical stress of flexing across multiple elements, improving overall durability while maintaining flexibility for installation.
Solution Approach 2:
The cable employs a composite structure combining multiple conductors, insulation layers, and protective bundling materials. This composite construction provides both the flexibility needed for installation and the durability required to withstand repeated flexing in hinge applications.
3Reliability
If a bundled structure with cluster sections is used, then the flexibility and durability improve, but the cable becomes susceptible to arbitrary distortion and external electromagnetic interference
Solution Approach 1:
The bundled structure, which initially appears vulnerable to distortion, is combined with electromagnetic shielding layers. The shielding converts the potential harm of electromagnetic interference into a protected signal transmission environment, while the bundled structure maintains its flexibility and durability advantages.
Solution Approach 2:
The cable integrates electromagnetic shielding materials with the bundled conductor structure. This composite construction provides both mechanical durability and protection against electromagnetic interference, resolving the contradiction between flexibility and susceptibility to external factors.
4Object-affected harmful factors
If electromagnetic shielding material is added to protect against interference, then the protection against electromagnetic interference improves, but the device complexity increases
Solution Approach 1:
The electromagnetic shielding function is merged with the existing bundled cable structure rather than being added as a separate external component. The shielding layers are integrated within the cable construction itself, providing protection while minimizing additional complexity.
Solution Approach 2:
The bundled cable structure serves multiple functions simultaneously: mechanical flexibility, durability against flexing, and electromagnetic shielding. This multi-functionality reduces the need for separate components, thereby limiting the increase in overall device complexity.
Data Source
AI summary
A bundled flexible flat circuit cable includes a flexible substrate that forms at least one cluster section having an end forming at least one first connection section and an opposite end forming at least one second connection section. Both the first and second connection sections or one of the first and second connection sections form a stack structure. The flexible substrate can be of a structure of single-sided or double-sided substrate and may additionally include an electromagnetic shielding layer. A bundling structure is provided to bundle the cluster section at a predetermined location to form a bundled structure. The bundling structure can be made of a shielding material, an insulation material, or a combination of shielding material and insulation material.