Parallel Biaxial Hinge With Slide Regulator for 360° Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing biaxial hinges require high machining accuracy and complex mechanisms to regulate the rotations of their shafts, limiting their ability to open and close electronic device housings up to 360 degrees.
Innovation Solution
A biaxial hinge design featuring a first and second shaft with attachment portions, coupling means, a slide member, engaging means, urging means, and feeding means that allow for 360-degree rotation without requiring high machining accuracy or complex mechanisms, using stopper and torque generating components to control rotation angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a lock member is disposed between the first shaft and the second shaft to selectively regulate rotations, then the rotation regulation function is achieved, but the dimension of the lock member is limited by the interval between shafts and high machining accuracy is required
Solution Approach 1:
A slide member is introduced as an intermediary component that moves along the axial direction of the shafts. The slide member includes first engaging means that engages with the first shaft and second engaging means that engages with the second shaft. This intermediary structure allows rotation regulation without requiring high machining accuracy between the shafts themselves, as the slide member provides the necessary movement and engagement interface.
2Ease of operation
If a lock member is disposed between the first shaft and the second shaft to selectively regulate rotations, then the rotation regulation function is achieved, but a complicated mechanism is necessary
Solution Approach 1:
The slide member integrates multiple functions into a single component: it moves along the axial direction to regulate rotations, includes first engaging means for the first shaft, includes second engaging means for the second shaft, and works with urging means and feeding means. By merging these elements into one slide member, the overall mechanism complexity is reduced compared to using separate components for each function.
Solution Approach 2:
The slide member serves multiple purposes: it acts as a locking element, a positioning element, and a connection element between the first and second shafts. The engaging means on the slide member can selectively engage with either shaft, providing universal rotation regulation capability for both shafts through a single component.
3Manufacturing precision
If the hinge structure is simplified to reduce machining accuracy requirements, then manufacturing complexity is reduced, but the ability to hold housings at desired angles may be compromised
Solution Approach 1:
The slide member is designed to be movable along the axial direction of the shafts, allowing dynamic adjustment of the engagement positions. This dynamic capability enables the hinge to adapt to different rotation angles and hold positions reliably without requiring high machining accuracy, as the slide member can move to compensate for dimensional variations.
Solution Approach 2:
The engaging means are designed to provide mechanical feedback through engagement and disengagement. When the slide member engages with the first or second shaft, it provides tactile and mechanical feedback that confirms the engagement state, ensuring reliable angle holding. The urging means also provides continuous feedback force to maintain proper engagement.
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 enables robust, convenient 360-degree opening and closing of electronic device housings with reduced machining complexity and operational burden, allowing for precise angle control and preventing sudden rotations.
Implementation Method 1
urging means for urging the slide member from the first position toward the second position
Implementation Method 2
friction generating means for generating friction torques against rotation motions for the first shaft and the second shaft, respectively
Data Source
AI summary
Provided is a biaxial hinge capable of opening up to 360 degrees in which the hinge does not require a complicated mechanism or components with high machining accuracy. The hinge includes first and second shafts (11, 21), joint plates (34, 37, 38) rotatably coupling first and second shafts (11, 21), regulator (36) movable between a first position and a second position along an axial direction of first and second shaft (11, 21), first lock plate (12) rotating together with the first shaft (11) and inhibiting the rotation of first shaft (11) by engaging with regulator (36) located at the first position, lock sleeve (23) rotating together with second shaft (21) and inhibiting the rotation of second shaft (21) by engaging with regulator (36) located at the second position; and a regulation cam (13) feeding regulator (36) from the second position to the first position.