Sliding Housing Flex Connector Segmentation for Slim Profile
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Solution Overview
Problem
Portable electronic devices with sliding housings face challenges in providing efficient and ergonomic user input mechanisms that are accessible in both closed and open positions, particularly in maintaining a slim design while ensuring effective navigation and protection of the keypad.
Innovation Solution
Incorporating a primary flex connector for electrical connectivity between the upper and lower housings, along with an auxiliary input device and secondary flex connectors, which allows for slidable movement and minimizes thickness by distributing electrical connectors around the sides, thus enabling fine navigation control and protecting the keypad.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a sliding housing design is used to protect the keypad, then the device maintains a slim profile when closed, but the complexity of providing accessible input mechanisms in both closed and open positions increases
Solution Approach 1:
The input mechanism is segmented into two distinct parts: a full keyboard located in the lower housing and an auxiliary input device integrated into the upper housing. This segmentation allows each component to serve specific functions independently, enabling the device to maintain a slim closed profile while providing comprehensive input capabilities when open.
Solution Approach 2:
The auxiliary input device in the upper housing serves multiple functions: it provides input capability when the device is closed, acts as a structural component of the sliding mechanism, and enables fine navigation control. This multi-functionality reduces the need for additional separate components, thereby managing complexity.
2Length of moving object
If electrical connectors are distributed around the sides to minimize thickness, then the device maintains a slim design, but the complexity of the flex connector system increases
Solution Approach 1:
The electrical connection system is segmented into multiple flexible printed circuit boards (FPCs), each handling specific connections between the upper and lower housings. This segmentation allows connectors to be distributed around the sides of the device, minimizing thickness in any single location while managing the overall complexity through modular organization.
Solution Approach 2:
Instead of concentrating all electrical connectors in a single plane or location, the flex connector system distributes connectors across multiple dimensions - around the sides of the device and at different heights. This spatial distribution enables a slim profile while accommodating multiple connection points through three-dimensional arrangement.
3Measurement precision
If an auxiliary input device is added to the upper housing for fine navigation control, then navigation precision is improved, but the device complexity increases
Solution Approach 1:
The auxiliary input device is merged with the upper housing structure itself, rather than being a separate add-on component. This integration allows the input device to share structural support and housing materials with the sliding mechanism, reducing overall device complexity while providing enhanced navigation precision through the auxiliary controls.
Data Source
AI summary
A portable electronic device includes a lower housing and an upper housing slidable relative to the lower housing between closed and open positions. The upper housing includes an auxiliary input device and a display. A primary flex connector electrically connects the lower and upper housings. At least one secondary flex connector may electrically connect the primary flex connector to the auxiliary input device or the display. The upper housing may include a cover plate that is removable to allow access to at least a portion of the flex connectors.