Folding Hinge Synchronization Mechanism With Slide-Groove Linkage
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Solution Overview
Problem
The synchronization mechanism in folding screens is prone to detachment of slide rail arms and housing connecting rods, and the high machining precision and cost due to multiple interconnected parts.
Innovation Solution
A synchronization mechanism with a base, swing arms, and connecting rod shafts, where the slide rail arms are rotatably connected to stop racks and swing arms, ensuring consistent rotation angles and reducing the need for a shared driving shaft, thereby lowering machining precision and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a housing connecting rod is slidably connected to two slide rail arms to prevent torsion structures from moving away, then the torsion structures are constrained, but synchronization drops during rotation causing detachment
Solution Approach 1:
The base is divided into a spindle seat and a stop rack that are detachably connected, allowing independent assembly and adjustment of different functional components, thereby improving both connection stability and synchronization reliability
Solution Approach 2:
A connecting rod shaft is introduced as an intermediary component to connect the swing arm and slide groove, mediating the motion transmission between components and ensuring synchronized rotation while maintaining stable connections
2Ease of manufacture
If a driving shaft connects the base and two torsion assemblies in series, then the components are connected, but machining precision requirements increase and machining cost increases
Solution Approach 1:
The base is segmented into a spindle seat and stop rack that can be assembled separately, reducing the overall machining precision requirements for the base component while maintaining proper alignment through the detachable connection design
Solution Approach 2:
The slide groove and connecting rod shaft design allows the mechanism to self-align and maintain synchronization during rotation, eliminating the need for high-precision machining of a long driving shaft while ensuring proper component alignment
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 ensures consistent rotation angles and prevents detachment of slide rail arms and housing connecting rods, reducing machining costs and improving the stability of the connection, while facilitating a droplet-shaped folding process.
Implementation Method 1
the other end of the connecting rod shaft is in a sliding fit with the slide groove, and the swing arm is driven to rotate through the slide groove and the connecting rod shaft
Data Source
AI summary
Provided are a synchronization mechanism and a folding hinge. In the synchronization mechanism, a base includes a spindle seat and a stop rack, and one first rotation portion is provided on each of two sides of the spindle seat along the width direction; the stop rack is detachably connected to the spindle seat, and a second rotation portion is provided on each of two sides of the stop rack along the width direction; two swing arms are rotatably disposed on two first rotation portions respectively; at least two slide rail arms are synchronously and rotatably disposed on two second rotation portions respectively, and each slide rail arm is provided with a slide groove; one end of a connecting rod shaft is connected to a respective swing arm while the other end of the connecting rod shaft is in a sliding fit with the slide groove.