Foldable Hinge Mechanism With Arc-Sliding Swing Arm Overlap
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Solution Overview
Problem
Existing foldable terminal products face reliability issues due to insufficient overlap of swing arms in their hinge mechanisms, leading to poor performance during operation.
Innovation Solution
A hinge mechanism with alternating arc-shaped sliding portions and fit portions on swing arm and door panel assemblies, ensuring precise sliding trajectories and increased overlap, enhancing connection strength and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sliding grooves are used for rotation, then the structure is simple, but the overlap of swing arms is insufficient leading to poor reliability
Solution Approach 1:
The hinge mechanism is divided into multiple independent assemblies including swing arm assemblies, door panel assemblies, and arc-shaped sliding portions. Each component performs a specific function and can be manufactured separately, then assembled together to achieve the desired rotational movement with improved reliability
Solution Approach 2:
Arc-shaped sliding portions and fit portions are introduced as intermediary elements between the swing arm assemblies and door panel assemblies. These arc-shaped components guide the rotational movement and ensure proper overlap and engagement, improving reliability without requiring complex direct connections
2Strength
If multiple arc-shaped sliding portions are used, then the overlap and connection strength are improved, but the manufacturing complexity increases
Solution Approach 1:
The connection system is segmented into multiple arc-shaped sliding portions and fit portions distributed at different locations. This segmentation allows each portion to be simpler in design while collectively providing strong connection through distributed engagement points
Solution Approach 2:
The arc-shaped sliding portions are designed with specific geometric parameters (arc radius, position, orientation) that are optimized to achieve both strong connection and ease of manufacture. The alternating arrangement of sliding portions and fit portions creates a balanced configuration that distributes manufacturing requirements
3Manufacturing precision
If alternating arc-shaped sliding portions and fit portions are used, then the sliding trajectory is precise, but the assembling accuracy requirement increases
Solution Approach 1:
The arc-shaped sliding portions and fit portions serve as intermediary guiding elements that define the sliding trajectory through their geometric shapes. The alternating arrangement creates a natural guidance path that constrains movement to the desired trajectory, reducing the need for high assembling accuracy
Solution Approach 2:
Arc-shaped (curved) sliding portions are used instead of straight linear guides. The curved geometry naturally guides the rotational movement along the correct trajectory, providing self-aligning characteristics that reduce sensitivity to assembly errors and improve sliding precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution increases the overlap between swing arm and door panel assemblies, improving connection strength and reducing manufacturing complexity while ensuring reliable rotational movement.
Implementation Method 1
the first arc-shaped sliding portion is in sliding fit with the first arc-shaped sliding fit portion, and the second arc-shaped sliding portion is in sliding fit with the second arc-shaped sliding fit portion
Data Source
AI summary
This application provides a hinge mechanism and an electronic device. The hinge mechanism includes a base, at least two swing arm assemblies, and at least two door panel assemblies. The swing arm assemblies and the door panel assemblies are respectively arranged on two sides of the base. One of the swing arm assembly and the door panel assembly is provided with a first arc-shaped sliding portion and a second arc-shaped sliding fit portion, and the other is provided with a first arc-shaped sliding fit portion and a second arc-shaped sliding portion, the first arc-shaped sliding portion is in sliding fit with the first arc-shaped sliding fit portion, and the second arc-shaped sliding portion is in sliding fit with the second arc-shaped sliding fit portion, so that the swing arm assembly is rotatably connected to the door panel assembly.