Torque Hinge Bearing Surface Layout for Precise 180° Positioning
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Solution Overview
Problem
Existing torque hinge modules in folding electronic devices cannot accurately unfold to 180 degrees due to torque accumulation, preventing precise angle positioning.
Innovation Solution
A torque hinge module featuring a rotating element and torque assembly with specific bearing surfaces and included angles, where the first bearing surface corresponds to the second and third bearing surfaces, reducing torque and allowing accurate angle fixation by aligning these surfaces during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the torque hinge module uses a conventional structure with bearing surfaces, then it can generate torque to increase maneuvering feeling, but it cannot accurately unfold to 180 degrees due to torque accumulation
Solution Approach 1:
The bearing surface is divided into multiple sub-bearing surfaces (first sub-bearing surface, second sub-bearing surface, third sub-bearing surface, fourth sub-bearing surface) arranged at different angles. This segmentation allows the torque hinge module to distribute torque accumulation across multiple contact points, enabling accurate positioning at specific angles including 180 degrees while maintaining the torque generation function.
2Adaptability or versatility
If the torque hinge module generates torque through the torque assembly, then it enables the two bodies to be positioned at any angle, but it causes torque accumulation that prevents accurate unfolding to 180 degrees
Solution Approach 1:
Different sub-bearing surfaces are positioned at specific included angles (e.g., 90 degrees between adjacent surfaces) to provide localized torque reduction at critical positioning points. This allows the hinge to maintain versatile angle positioning capability while achieving precise unfolding to 180 degrees through strategic local torque management at the bearing interfaces.
Data Source
AI summary
A torque hinge module including a rotating element and a torque assembly is provided. The torque assembly rotatably sleeves the rotating element to generate torque. One of the rotating element and the torque assembly has a first bearing surface, and the other one has a second bearing surface and a third bearing surface corresponding to the first bearing surface. There is a first included angle between a plane where the second bearing surface is located and a plane where the third bearing surface have is located. A shape of the first bearing surface corresponds to a shape of the second bearing surface and a shape of the third bearing surface. When the rotating element rotates relative to the torque assembly to make the first bearing surface bear against the second bearing surface or the third bearing surface, the torque is reduced.