Scissor Hinge Link Assembly for 180-Degree Laptop Opening
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Solution Overview
Problem
Existing computing devices, such as laptops, are limited in their ability to open beyond 180 degrees due to structural constraints, which can make certain features inaccessible and compromise user experience and functionality.
Innovation Solution
A hinge assembly incorporating a hinge link and scissor component with an off-centered post and scissor mechanism that allows for a display housing to be lifted away from a base housing, creating a gap for full 180-degree rotation without notches or large chamfers, ensuring access to back features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional hinge assembly is used, then the device structure is simple, but the device cannot open beyond 180 degrees due to structural constraints
Solution Approach 1:
The hinge assembly is divided into multiple independent components: a hinge link with first and second ends, a first pivot at the first end, and a second pivot at the second end. This segmentation allows each component to perform its specific function while contributing to the overall 180-degree opening capability without requiring complex integrated structures.
Solution Approach 2:
The hinge link is received within a hinge recess formed in the housing, creating a nested arrangement where the movable hinge components are housed within the stationary housing structure. This nesting allows the hinge mechanism to achieve full 180-degree rotation while maintaining a compact overall form factor.
2Ease of operation
If notches or large chamfers are used to enable full opening, then the opening angle is improved, but the structural integrity is compromised
Solution Approach 1:
The hinge link acts as an intermediary component between the display housing and base housing, enabling full 180-degree opening through its scissor-like expansion mechanism rather than requiring notches or chamfers in the housing structures themselves. This mediator approach preserves the integrity of the housing while achieving the desired opening angle.
3Adaptability or versatility
If the hinge assembly allows full 180-degree opening, then accessibility to back features is improved, but the device complexity increases
Solution Approach 1:
The hinge assembly utilizes an off-centered post configuration in the second pivot, creating an asymmetric structure that enables the scissor component to expand and lift the display housing away from the base housing. This asymmetric design achieves full 180-degree opening and improved feature accessibility while maintaining a relatively simple overall structure.
Data Source
AI summary
A device can include a first housing that includes a hinge recess and a pivot; a second housing that includes a hinge recess and a pivot; a hinge link coupled to the pivots, where a pivot coupling between the hinge link and the pivot of the second housing includes an off-centered post, and where the hinge link includes a scissor component pivot; and a scissor component coupled to the scissor component pivot that guides the pivot of the second housing via the off-centered post to generate a gap between the first housing and an end of the second housing upon transitioning the first housing and the second housing between a closed position and a fully open position.