Linkage Support Mechanism for Stable Large-Angle Screen Opening
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Solution Overview
Problem
Electronic apparatuses with hinges, such as laptops and tablets, experience instability when opened, causing the display screens to tip back, which is inconvenient for users.
Innovation Solution
A linkage device with a drive component and a support member that rotates synchronously during a transmission stroke and idles during an idle stroke, switching between retracted and support positions to provide stable support and prevent tipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional hinge is used to connect the display screen and keyboard, then the opening and closing function is achieved, but the support stability is insufficient and the display screen tips back
Solution Approach 1:
The linkage device employs dynamic motion characteristics with transmission stroke and idle stroke. During transmission stroke, the drive component and support member rotate synchronously to provide stable support. During idle stroke, the drive component idles relative to the support member, enabling large-angle opening and closing without compromising support stability
Solution Approach 2:
The rotation stroke is segmented into two distinct phases: transmission stroke where synchronous rotation occurs for stable support, and idle stroke where the drive component idles for flexible positioning. This segmentation allows the system to achieve both stability and operational convenience
2Reliability
If the support member is always extended to provide support, then stability is improved, but the storage convenience deteriorates
Solution Approach 1:
The support member dynamically changes position between retracted and support positions based on operational needs. During use, it extends to the support position for stability. During storage, it retracts to facilitate compact folding, achieving both stability and storage convenience through dynamic positioning
3Device complexity
If the drive component rotates continuously with the support member, then the structure is simplified, but the large-angle opening and closing capability is limited
Solution Approach 1:
The rotation motion is segmented into transmission stroke and idle stroke. During transmission stroke, synchronous rotation provides structural simplicity. During idle stroke, the drive component rotates independently relative to the support member, enabling large-angle opening and closing while maintaining overall structural simplicity
Solution Approach 2:
The linkage device dynamically switches between synchronous rotation mode and idle rotation mode. This dynamic behavior allows the system to maintain structural simplicity during normal operation while achieving enhanced adaptability for large-angle opening and closing
Data Source
AI summary
A linkage device includes a drive component and a support member. The drive component is rotatable during a transmission stroke and an idle stroke. The support member is coupled to the drive component. The drive component and the support member rotate synchronously during the transmission stroke. At least a part of the drive component idles with respect to the support member during the idle stroke. The support member has a retracted position and a support position switched by the transmission stroke. The support member in the retracted position is suitable for storage. The support member in the support position is suitable for stopping and limiting.