Foldable Display Hinge Assembly With Arc Guide and Clip Spring
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Solution Overview
Problem
Existing foldable display devices face challenges in achieving a natural operation while maintaining a reduced thickness and preventing interference during rotation.
Innovation Solution
A hinge assembly with a multi-axis structure and a clip spring mechanism that allows for smooth folding and unfolding, utilizing a guide slot and rotational bars connected by a clip spring to control the rotation and maintain the device's shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional hinge structure is used to enable folding operation, then the device can be folded, but the thickness increases and interference occurs during rotation
Solution Approach 1:
The hinge assembly is divided into multiple independent components: first and second support bars, first and second rotational bars, a guide member with guide slot, and a clip spring. This segmentation allows each component to perform a specific function (support, rotation, guidance, elastic force) while working together, enabling the folding mechanism to achieve reduced thickness without compromising operational capability
Solution Approach 2:
The guide member with the guide slot acts as an intermediary component that controls and guides the rotational movement between the support bars. The guide slot provides a predetermined path for the rotational bars, ensuring smooth folding operation while maintaining a compact thickness. The clip spring serves as another intermediary that provides elastic force to assist the folding/unfolding operation
2Length of stationary object
If the hinge structure is made thinner to reduce device thickness, then thickness is reduced, but interference occurs during rotation operation
Solution Approach 1:
The guide slot is designed with an arc shape centered on an axis parallel to the first direction, creating a three-dimensional rotational path. This dimensional approach allows the rotational bars to move along a curved trajectory rather than a linear path, enabling smooth rotation within a compact thickness without interference between components
3Device complexity
If a simple connection structure is used between support bars, then the structure is simpler, but the device cannot maintain natural operation and proper shape at various angles
Solution Approach 1:
The clip spring changes its elastic parameters (compression/expansion) dynamically during the folding operation to maintain proper shape at various angles. The spring provides varying elastic forces depending on the folding angle, ensuring the device maintains a natural operation state throughout the range of motion while preventing interference between 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
Enables a natural operation with reduced thickness and prevents interference, allowing the device to maintain its shape at various angles and curvatures.
Implementation Method 1
a clip spring coupled to the guide member. The guide slot may have an arc shape centered on a first axis parallel to the first direction, and the clip spring may be coupled to the guide member and press the another end of the first rotational bar from both sides on a basis of the guide slot
Data Source
AI summary
A hinge assembly includes a first support bar extending in a first direction, a second support bar extending in the first direction, and a first rotation guide device connecting the first support bar and the second support bar. The first rotation guide device includes a guide member including a guide slot, a first rotational bar having an end coupled to the first support bar and another end inserted into the guide slot and slidable along the guide slot, a second rotational bar having an end coupled to the second support bar and another end coupled to the guide member, and a clip spring coupled to the guide member. The guide slot has an arc shape centered on a first axis parallel to the first direction, and the clip spring is coupled to the guide member and presses the another end of the first rotational bar from both sides.