Helical Slider Synchronization Mechanism for Compact Dual-Shaft Rotation
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Solution Overview
Problem
Current synchronization mechanisms for electronic devices, such as gear and worm structures, occupy large space, are costly, and have complex assemblies due to numerous components.
Innovation Solution
A synchronization mechanism with a base, slider, and swing arms featuring helical surfaces and elastic components that allow for compact design and synchronized rotation without undercut structures, utilizing a simple mold or numerical control processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If gear or worm structures are used for synchronization, then the meshing teeth can ensure strength, but the mechanism occupies relatively large space
Solution Approach 1:
The patent replaces traditional gear meshing mechanisms with a cam-follower mechanism. The cam profile is designed to directly guide the follower through the desired motion path, eliminating the need for multiple gear components and reducing the overall space requirement while maintaining synchronization capability
Solution Approach 2:
The invention transitions from a two-dimensional gear meshing approach to a three-dimensional cam profile design. By utilizing the vertical dimension through the cam's raised profile, the mechanism achieves the same synchronization function in a more compact footprint
2Reliability
If gear and worm structures are used, then synchronization can be achieved, but the quantity of components is large, costs are high, and assembly is complex
Solution Approach 1:
The patent merges multiple gear components into a single integrated cam structure. The cam profile inherently contains all the synchronization information that would otherwise require separate gears, reducing component count and simplifying assembly while maintaining reliable synchronized motion
Solution Approach 2:
The cam component serves multiple functions simultaneously: it provides synchronization, guides motion, and defines the timing sequence. This multi-functionality eliminates the need for separate synchronization gears and motion guide components
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 mechanism achieves synchronized rotation with a simple structure, reduced space occupation, and lower costs, while maintaining design flexibility and meeting thin and light design requirements.
Implementation Method 1
the helical surface elastically abuts against the abutting portion under an action of the elastic component
Data Source
AI summary
A synchronization mechanism, a rotating shaft mechanism, and an electronic device are provided. The synchronization mechanism in this application may be applied to an electronic device such as a mobile phone, a tablet computer, a tablet computer accessory, or a wearable device. The synchronization mechanism includes a base, a slider, an elastic component, and a first swing arm and a second swing arm that are on two sides of the slider. A helical surface elastically abuts against an abutting portion under an action of the elastic component, so that the first swing arm and the second swing arm rotate at a same angle relative to the base. The elastic component can enable the helical surface and the abutting portion to be always in an abutting state during rotation of the swing arms, so that rotation synchronization of the swing arms on the two sides is improved.