Foldable Hinge Assembly With Nested Swing Arms for Compact Screen Support
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Solution Overview
Problem
Conventional foldable devices with door plate swing arms for flexible screens have complex structure designs and motion trajectory issues due to additional movable parts, requiring significant space and increased interference concerns.
Innovation Solution
A hinge assembly with a base and swing portions, including first and second swing arms, a connection block, and a movable member, allowing for planar high-pair cooperation with two degrees of freedom to manage different rotation angles and reduce interference, facilitating a compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a door plate swing arm is independently provided in the hinge structure, then the flexible screen can be supported in a desired shape, but the quantity of movable parts increases and the structure becomes more complex
Solution Approach 1:
The patent merges the door plate swing arm function into the movable member of the hinge assembly. The movable member integrates multiple functions: it acts as both the hinge's movable component and the door plate swing arm, connecting to both the first swing arm via the first arc-shaped slot and the door plate assembly via the connection portion. This eliminates the need for an independent door plate swing arm while maintaining the desired support angle functionality.
Solution Approach 2:
The movable member is designed as a multi-functional component that performs multiple roles: it provides the hinge joint movement through cooperation with the first swing arm, controls the motion trajectory through the arc-shaped slot mechanism, and supports the door plate assembly at the desired angle through the connection portion. This universal component replaces what would traditionally require separate specialized parts.
2Adaptability or versatility
If a door plate swing arm is independently provided, then motion trajectory control is improved, but the space required increases
Solution Approach 1:
The patent employs a nested arrangement where the arc-shaped slot is formed on the first swing arm, and the movable member moves within this slot. The connection block with the strip slot is nested within the movable member, allowing the pin portion to slide and rotate. This nested configuration enables complex motion trajectory control within a compact space, eliminating the need for additional external mechanisms.
Solution Approach 2:
The patent uses the arc-shaped slot geometry to control motion trajectory in a rotational dimension. The curved path of the slot guides the movable member through a specific angular range, enabling precise motion control without requiring linear extension of components. This dimensional approach to trajectory control achieves compact design.
3Adaptability or versatility
If more movable components are added, then the motion control capability is improved, but the interference problem increases
Solution Approach 1:
The patent segments the motion control into distinct functional zones: the first swing arm provides the primary hinge rotation, the arc-shaped slot controls the intermediate motion trajectory, and the connection portion enables the final door plate support angle. This segmentation allows each component to have a clear, limited function, reducing interference between parts while maintaining comprehensive rotation angle control.
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 hinge assembly enables reliable support for flexible screens with varied rotation angles without additional parts, reducing overall size and complexity while ensuring smooth motion trajectories.
Implementation Method 1
the pin portion cooperates with the strip slot and can slide along a length direction of the strip slot and rotate relative to the connection block in the strip slot
Implementation Method 2
a first swing arm, where one end of the first swing arm is rotatably connected to the base... a second swing arm, where one end of the second swing arm is rotatably connected to the base
Implementation Method 3
one end of the movable member slidably cooperates with the first arc-shaped slot, so that the movable member can rotate about a circle center of the first arc-shaped slot relative to the first swing arm
Implementation Method 4
the other end of the movable member slidably cooperates with the second arc-shaped slot, so that the connection block can rotate about a circle center of the second arc-shaped slot relative to the movable member
Data Source
AI summary
This application relates to the hinge structure field, and provides a hinge assembly and a foldable device. The hinge assembly includes a base and a plurality of swing portions. The swing portion includes a first swing arm, a connection block, a second swing arm, and a movable member. One end of the first swing arm is rotatably connected to the base, and the other end of the first swing arm is provided with a pin portion and a first arc-shaped slot. The connection block is provided with a strip slot. The pin portion slidably and rotatably cooperates with the strip slot. The connection block is further provided with a second arc-shaped slot. One end of the second swing arm is rotatably connected to the base, and the other end of the second swing arm slidably cooperates with the connection block.