Foldable Screen Rotating Shaft Assembly Cable Routing
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Solution Overview
Problem
Existing foldable screen devices face reliability issues with flexible electrical connection lines due to excessive bending and material fatigue, leading to potential breakage or scratching during folding and unfolding.
Innovation Solution
A foldable screen device design featuring two frames with a rotating shaft assembly that includes a connection structure with channels and hinges, positioning the electrical connection line to minimize bending deformation and control the bending amount, thereby enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flexible electrical connection line has redundant length to adapt to folded and unfolded states, then the device can be folded and unfolded, but the electrical connection line is prone to break or scratch, reducing reliability
Solution Approach 1:
A guiding structure is introduced as an intermediary component between the electrical connection line and the rotating shaft. This guiding structure controls the bending path of the electrical connection line, preventing direct contact with the rotating shaft and reducing friction and scratching. The guiding structure mediates the interaction between the flexible cable and the mechanical moving parts, allowing foldable capability while protecting the electrical connection.
Solution Approach 2:
The electrical connection line is pre-positioned and guided through a predetermined path defined by the guiding structure before the folding action occurs. This preliminary positioning ensures that during folding and unfolding, the cable follows a controlled trajectory with minimal bending stress, preventing breakage while maintaining the foldable function.
2Ease of operation
If the electrical connection line crosses two sides of the rotating shaft, then electrical connection between different main bodies is implemented, but the bending deformation is excessive causing material fatigue
Solution Approach 1:
The guiding structure serves as a mediator that intercepts and redirects the bending stress away from the electrical connection line. By providing a dedicated guiding path, the structure reduces the bending deformation amplitude that the cable must withstand, preventing material fatigue while maintaining electrical connectivity between different main bodies.
Solution Approach 2:
The guiding structure may incorporate flexible protective covers or thin film elements that envelop or guide the electrical connection line. These flexible protective elements reduce friction and bending stress by providing a smooth guiding surface, thereby protecting the cable strength while enabling the necessary electrical connection across moving parts.
Data Source
Figure 1~2a
Figure 2b~3
Figure 4~5a
AI summary
This application provides a foldable screen device. The foldable screen device in this application includes two frames that are jointly articulated with a rotating shaft assembly. The two frames may rotate around rotating shafts of the rotating shaft assembly to be closed or opened. The rotating shaft assembly includes a connection structure and hinges. The connection structure has a channel that passes through two opposite sides of the rotating shaft assembly, and an electrical connection line of the foldable screen device penetrates into the channel. Two ends of the electrical connection line are respectively connected to the two frames, and the hinges and the channel are located at different positions of the rotating shaft assembly in an axial direction. In this way, bending deformation generated by the electrical connection line when the foldable screen device is folded is relatively small, and connection reliability is high.