Foldable Door Panel Assembly With Integrated Sliding Groove Positioning
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Solution Overview
Problem
Existing door panel assemblies in foldable-screen devices suffer from weak structural strength, precision issues, and excessive thickness due to current molding methods, which hinder their ability to meet user requirements for large display screens.
Innovation Solution
A door panel assembly design featuring M limiting structures and M+N kinematic pair sliding grooves, where the grooves are fastened by limiting structures and integrally formed with the panel, improving strength and precision without increasing thickness, using injection molding and embedded structures to enhance binding forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all-in-one injection molding manner or carbon fiber and embedded injection molding manner is used, then manufacturing efficiency is improved, but structural strength becomes weak and thickness space is occupied
Solution Approach 1:
The door panel assembly is segmented into multiple independent components: the door panel body, limiting structures, and kinematic pair sliding grooves. This segmentation allows each component to be optimized independently for strength while maintaining manufacturing efficiency through modular assembly processes.
Solution Approach 2:
The patent employs composite construction by combining the door panel body with separately manufactured limiting structures and sliding grooves. This composite approach enables the use of optimized materials and processes for each component, achieving both high structural strength and manufacturing efficiency.
2Strength
If riveting connection manner is used, then structural strength is improved, but position precision of kinematic pair deteriorates and thickness space is occupied
Solution Approach 1:
The limiting structures and kinematic pair sliding grooves are merged with the door panel body through integrated manufacturing processes. This merging eliminates the need for separate riveting connections, thereby maintaining structural strength while achieving superior position precision through direct integration.
Solution Approach 2:
The patent replaces the mechanical riveting connection system with an integrated structural system where limiting structures and sliding grooves are directly formed as part of the door panel. This substitution eliminates positioning errors associated with riveting while maintaining structural integrity.
3Manufacturing precision
If limiting structures are added to fasten sliding grooves, then strength and position precision are improved, but thickness space may be occupied
Solution Approach 1:
The limiting structures are designed to extend in directions other than the thickness direction of the door panel. By utilizing the length and width dimensions for positioning and fastening, the design achieves high position precision without increasing the thickness dimension of the door panel assembly.
Data Source
AI summary
This application discloses a rotary shaft mechanism, and an electronic device, and is applied to the field of terminal device technologies. The rotary shaft mechanism includes a door panel, including a first surface. A length direction of the door panel is a first direction. M limiting structures are spaced apart from each other on the first surface and/or inside the door panel in the first direction. M+N kinematic pair sliding grooves are spaced apart from each other on the first surface, positions of the M kinematic pair sliding grooves are opposite to positions of the M limiting structures, the M kinematic pair sliding grooves are fastened to the corresponding limiting structures, the N kinematic pair sliding grooves are integrally formed with the door panel, M is a positive integer, and N is a positive integer.